{"id":2151,"date":"2025-10-16T00:52:31","date_gmt":"2025-10-15T19:22:31","guid":{"rendered":"https:\/\/metatechx.in\/?p=2151"},"modified":"2025-10-16T01:37:42","modified_gmt":"2025-10-15T20:07:42","slug":"charge-mix-calculator","status":"publish","type":"post","link":"https:\/\/metatechx.in\/index\/charge-mix-calculator\/","title":{"rendered":"Charge Mix Calculator"},"content":{"rendered":"\n<p>Charge mix calculation is the process of determining the optimal combination of raw materials\u2014like scrap, pig iron, sponge iron, and ferroalloys\u2014to be charged into the furnace. The goal is to achieve the desired chemical composition of the molten steel while minimizing cost and energy consumption.<br>Charge mix calculation is the unsung hero of steelmaking\u2014where metallurgy meets economics. Whether you&#8217;re running an induction furnace or an electric arc furnace, mastering this step means better steel, lower costs, and a smarter melt shop. <\/p>\n\n\n\n<p><br><\/p>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <title>Steelmaking Charge Mix Calculator<\/title>\n    <script src=\"https:\/\/cdn.tailwindcss.com\"><\/script>\n    <style>\n        body {\n            box-sizing: border-box;\n        }\n        \n        .input-field {\n            transition: all 0.2s ease;\n        }\n        \n        .input-field:focus {\n            transform: scale(1.02);\n            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);\n        }\n        \n        .results-table {\n            animation: slideIn 0.3s ease-out;\n        }\n        \n        @keyframes slideIn {\n            from {\n                opacity: 0;\n                transform: translateY(10px);\n            }\n            to {\n                opacity: 1;\n                transform: translateY(0);\n            }\n        }\n        \n        .calculate-btn {\n            background: linear-gradient(135deg, #3b82f6, #1d4ed8);\n            transition: all 0.3s ease;\n        }\n        \n        .calculate-btn:hover {\n            background: linear-gradient(135deg, #1d4ed8, #1e40af);\n            transform: translateY(-2px);\n            box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);\n        }\n    <\/style>\n<\/head>\n<body class=\"bg-gradient-to-br from-slate-50 to-blue-50 min-h-full font-sans\">\n    <div class=\"container mx-auto px-2 sm:px-4 lg:px-6 py-4 sm:py-6 lg:py-8 max-w-7xl\">\n        <!-- Header -->\n        <div class=\"text-center mb-4 sm:mb-6 lg:mb-8\">\n            <h1 class=\"text-2xl sm:text-3xl lg:text-4xl font-bold text-gray-800 mb-2\">\u2699\ufe0f Steelmaking Charge Mix Calculator<\/h1>\n            <p class=\"text-sm sm:text-base text-gray-600 px-2\">Calculate metallurgical compositions, yields, and production costs with Mr. Prashant Goswami<\/p>\n        <\/div>\n\n        <!-- Main Input Section -->\n        <div class=\"bg-white rounded-lg sm:rounded-xl shadow-lg p-3 sm:p-4 lg:p-6 mb-4 sm:mb-6 lg:mb-8\">\n            <div class=\"mb-4 sm:mb-6\">\n                <label class=\"block text-sm font-semibold text-gray-700 mb-2\">Total Heat Size (tons)<\/label>\n                <input type=\"number\" id=\"totalHeat\" value=\"10\" \n                       class=\"input-field w-full sm:w-32 px-3 sm:px-4 py-2 border-2 border-gray-300 rounded-lg focus:border-blue-500 focus:outline-none\">\n            <\/div>\n\n            <!-- Charge Materials Table -->\n            <div class=\"overflow-x-auto -mx-3 sm:mx-0\">\n                <h3 class=\"text-base sm:text-lg font-semibold text-gray-800 mb-3 sm:mb-4 px-3 sm:px-0\">\ud83d\udd27 Charge Materials<\/h3>\n                <table id=\"chargeTable\" class=\"w-full min-w-[800px] border-collapse bg-white rounded-lg overflow-hidden shadow-sm\">\n                    <thead>\n                        <tr class=\"bg-gradient-to-r from-gray-100 to-gray-200\">\n                            <th class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 text-left font-semibold text-gray-700 text-xs sm:text-sm\">Material<\/th>\n                            <th class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 text-center font-semibold text-gray-700 text-xs sm:text-sm\">% in Charge<\/th>\n                            <th class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 text-center font-semibold text-gray-700 text-xs sm:text-sm\">Yield %<\/th>\n                            <th class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 text-center font-semibold text-gray-700 text-xs sm:text-sm\">Cost \u20b9\/ton<\/th>\n                            <th class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 text-center font-semibold text-gray-700 text-xs sm:text-sm\">C%<\/th>\n                            <th class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 text-center font-semibold text-gray-700 text-xs sm:text-sm\">Mn%<\/th>\n                            <th class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 text-center font-semibold text-gray-700 text-xs sm:text-sm\">Si%<\/th>\n                            <th class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 text-center font-semibold text-gray-700 text-xs sm:text-sm\">P%<\/th>\n                            <th class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 text-center font-semibold text-gray-700 text-xs sm:text-sm\">S%<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr class=\"hover:bg-blue-50 transition-colors\">\n                            <td class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 font-medium text-gray-800 text-xs sm:text-sm\">\ud83d\udfe4 Sponge Iron<\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"50\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"85\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"32000\" class=\"input-field w-16 sm:w-20 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"1.5\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.2\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.1\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.05\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.01\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                        <\/tr>\n                        <tr class=\"hover:bg-blue-50 transition-colors\">\n                            <td class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 font-medium text-gray-800 text-xs sm:text-sm\">\u26ab Pig Iron<\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"20\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"95\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"42000\" class=\"input-field w-16 sm:w-20 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"4.0\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.4\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.2\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.06\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.015\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                        <\/tr>\n                        <tr class=\"hover:bg-blue-50 transition-colors\">\n                            <td class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 font-medium text-gray-800 text-xs sm:text-sm\">\u267b\ufe0f Scrap<\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"25\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"90\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"36000\" class=\"input-field w-16 sm:w-20 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.2\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.7\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.25\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.04\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.02\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                        <\/tr>\n                        <tr class=\"hover:bg-blue-50 transition-colors\">\n                            <td class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 font-medium text-gray-800 text-xs sm:text-sm\">\ud83d\udd39 SiMn<\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"3\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"98\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"85000\" class=\"input-field w-16 sm:w-20 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"1.8\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"65.0\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"17.0\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.25\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.03\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                        <\/tr>\n                        <tr class=\"hover:bg-blue-50 transition-colors\">\n                            <td class=\"border border-gray-300 px-2 sm:px-4 py-2 sm:py-3 font-medium text-gray-800 text-xs sm:text-sm\">\ud83d\udd38 FeMn<\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"2\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"95\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"75000\" class=\"input-field w-16 sm:w-20 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"7.0\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"78.0\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"1.5\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.35\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                            <td class=\"border border-gray-300 px-1 sm:px-2 py-2 sm:py-3 text-center\">\n                                <input value=\"0.02\" class=\"input-field w-12 sm:w-16 px-1 sm:px-2 py-1 border border-gray-300 rounded text-center text-xs sm:text-sm focus:border-blue-500 focus:outline-none\">\n                            <\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n\n            <!-- Operating Costs -->\n            <div class=\"mt-6 sm:mt-8 grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-4 sm:gap-6\">\n                <div class=\"bg-gray-50 p-3 sm:p-4 rounded-lg\">\n                    <h4 class=\"font-semibold text-gray-700 mb-3 text-sm sm:text-base\">\u26a1 Power Costs<\/h4>\n                    <div class=\"space-y-3\">\n                        <div>\n                            <label class=\"block text-xs sm:text-sm text-gray-600 mb-1\">Power Cost (\u20b9\/kWh)<\/label>\n                            <input id=\"powerCost\" value=\"8\" \n                                   class=\"input-field w-full px-2 sm:px-3 py-2 border border-gray-300 rounded text-sm focus:border-blue-500 focus:outline-none\">\n                        <\/div>\n                        <div>\n                            <label class=\"block text-xs sm:text-sm text-gray-600 mb-1\">Energy Consumption (kWh\/ton)<\/label>\n                            <input id=\"kwhTon\" value=\"600\" \n                                   class=\"input-field w-full px-2 sm:px-3 py-2 border border-gray-300 rounded text-sm focus:border-blue-500 focus:outline-none\">\n                        <\/div>\n                    <\/div>\n                <\/div>\n                \n                <div class=\"bg-gray-50 p-3 sm:p-4 rounded-lg\">\n                    <h4 class=\"font-semibold text-gray-700 mb-3 text-sm sm:text-base\">\ud83d\udcb0 Other Costs<\/h4>\n                    <div>\n                        <label class=\"block text-xs sm:text-sm text-gray-600 mb-1\">Other Costs (\u20b9\/ton)<\/label>\n                        <input id=\"otherCost\" value=\"2500\" \n                               class=\"input-field w-full px-2 sm:px-3 py-2 border border-gray-300 rounded text-sm focus:border-blue-500 focus:outline-none\">\n                        <p class=\"text-xs text-gray-500 mt-1\">Includes refractories, electrodes, etc.<\/p>\n                    <\/div>\n                <\/div>\n\n                <div class=\"flex items-end sm:col-span-2 lg:col-span-1\">\n                    <button onclick=\"calculate()\" \n                            class=\"calculate-btn w-full px-4 sm:px-6 py-2 sm:py-3 text-white font-semibold rounded-lg text-sm sm:text-base focus:outline-none focus:ring-4 focus:ring-blue-300\">\n                        \ud83e\uddee Calculate Mix\n                    <\/button>\n                <\/div>\n            <\/div>\n        <\/div>\n\n        <!-- Results Section -->\n        <div id=\"resultsContainer\" class=\"hidden\">\n            <!-- Performance Chart -->\n            <div class=\"bg-white rounded-lg sm:rounded-xl shadow-lg p-3 sm:p-4 lg:p-6 mb-4 sm:mb-6\">\n                <h3 class=\"text-lg sm:text-xl lg:text-2xl font-bold text-gray-800 mb-4 sm:mb-6 flex items-center\">\n                    \ud83d\udcc8 Real-time Performance Dashboard\n                <\/h3>\n                <div class=\"flex justify-center overflow-x-auto\">\n                    <canvas id=\"performanceChart\" width=\"800\" height=\"400\" class=\"border border-gray-200 rounded-lg shadow-sm max-w-full h-auto\"><\/canvas>\n                <\/div>\n                <div class=\"mt-3 sm:mt-4 text-center text-xs sm:text-sm text-gray-600 px-2\">\n                    <p>\ud83d\udcca Live metrics update as you adjust your charge mix \u2022 Red dashed lines show target levels<\/p>\n                <\/div>\n            <\/div>\n            \n            <div class=\"bg-white rounded-lg sm:rounded-xl shadow-lg p-3 sm:p-4 lg:p-6 mb-4 sm:mb-6 lg:mb-8\">\n                <h3 class=\"text-lg sm:text-xl lg:text-2xl font-bold text-gray-800 mb-4 sm:mb-6 flex items-center\">\n                    \ud83d\udcca Detailed Calculation Results\n                <\/h3>\n                <div id=\"results\"><\/div>\n            <\/div>\n        <\/div>\n\n        <!-- Metallurgical Guides Section -->\n        <div class=\"bg-white rounded-lg sm:rounded-xl shadow-lg p-3 sm:p-4 lg:p-6 mb-4 sm:mb-6 lg:mb-8\">\n            <h3 class=\"text-lg sm:text-xl lg:text-2xl font-bold text-gray-800 mb-4 sm:mb-6 flex items-center\">\n                \ud83d\udcda Metallurgical Guides &#038; Best Practices\n            <\/h3>\n            \n            <div class=\"grid grid-cols-1 lg:grid-cols-2 gap-4 sm:gap-6\">\n                <!-- Chemistry Guidelines -->\n                <div class=\"bg-gradient-to-br from-blue-50 to-indigo-50 p-3 sm:p-4 lg:p-6 rounded-lg\">\n                    <h4 class=\"text-base sm:text-lg font-semibold text-gray-800 mb-3 sm:mb-4 flex items-center\">\n                        \ud83e\uddea Target Chemistry Guidelines\n                    <\/h4>\n                    <div class=\"space-y-3 sm:space-y-4\">\n                        <div class=\"bg-white p-3 sm:p-4 rounded-lg shadow-sm\">\n                            <h5 class=\"font-semibold text-gray-700 mb-2 text-sm sm:text-base\">Carbon (C)<\/h5>\n                            <ul class=\"text-xs sm:text-sm text-gray-600 space-y-1\">\n                                <li>\u2022 <strong>Low Carbon Steel:<\/strong> 0.05-0.25% (Structural, automotive)<\/li>\n                                <li>\u2022 <strong>Medium Carbon:<\/strong> 0.25-0.60% (Machinery, tools)<\/li>\n                                <li>\u2022 <strong>High Carbon:<\/strong> 0.60-1.70% (Springs, cutting tools)<\/li>\n                                <li>\u2022 <strong>Decarburization:<\/strong> ~0.15-0.25% loss during refining<\/li>\n                            <\/ul>\n                        <\/div>\n                        \n                        <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                            <h5 class=\"font-semibold text-gray-700 mb-2\">Manganese (Mn)<\/h5>\n                            <ul class=\"text-sm text-gray-600 space-y-1\">\n                                <li>\u2022 <strong>Minimum:<\/strong> 0.30% for deoxidation<\/li>\n                                <li>\u2022 <strong>Typical Range:<\/strong> 0.60-1.65%<\/li>\n                                <li>\u2022 <strong>Function:<\/strong> Deoxidizer, hardenability, strength<\/li>\n                                <li>\u2022 <strong>Mn\/S Ratio:<\/strong> Maintain >20:1 for hot workability<\/li>\n                            <\/ul>\n                        <\/div>\n                        \n                        <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                            <h5 class=\"font-semibold text-gray-700 mb-2\">Silicon (Si)<\/h5>\n                            <ul class=\"text-sm text-gray-600 space-y-1\">\n                                <li>\u2022 <strong>Killed Steel:<\/strong> 0.15-0.35%<\/li>\n                                <li>\u2022 <strong>Semi-killed:<\/strong> 0.05-0.15%<\/li>\n                                <li>\u2022 <strong>Function:<\/strong> Primary deoxidizer, fluidity<\/li>\n                                <li>\u2022 <strong>High Si Steel:<\/strong> 0.50-2.00% (electrical grades)<\/li>\n                            <\/ul>\n                        <\/div>\n                    <\/div>\n                <\/div>\n\n                <!-- Impurity Control -->\n                <div class=\"bg-gradient-to-br from-red-50 to-pink-50 p-6 rounded-lg\">\n                    <h4 class=\"text-lg font-semibold text-gray-800 mb-4 flex items-center\">\n                        \u26a0\ufe0f Impurity Control Limits\n                    <\/h4>\n                    <div class=\"space-y-4\">\n                        <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                            <h5 class=\"font-semibold text-gray-700 mb-2\">Phosphorus (P)<\/h5>\n                            <ul class=\"text-sm text-gray-600 space-y-1\">\n                                <li>\u2022 <strong>Maximum:<\/strong> 0.045% (most grades)<\/li>\n                                <li>\u2022 <strong>Ultra-low P:<\/strong> <0.015% (automotive)<\/li>\n                                <li>\u2022 <strong>Effect:<\/strong> Cold shortness, brittleness<\/li>\n                                <li>\u2022 <strong>Control:<\/strong> Basic slag, lime addition<\/li>\n                            <\/ul>\n                        <\/div>\n                        \n                        <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                            <h5 class=\"font-semibold text-gray-700 mb-2\">Sulfur (S)<\/h5>\n                            <ul class=\"text-sm text-gray-600 space-y-1\">\n                                <li>\u2022 <strong>Maximum:<\/strong> 0.050% (most grades)<\/li>\n                                <li>\u2022 <strong>Ultra-low S:<\/strong> <0.015% (deep drawing)<\/li>\n                                <li>\u2022 <strong>Effect:<\/strong> Hot shortness, inclusion formation<\/li>\n                                <li>\u2022 <strong>Control:<\/strong> Desulfurization, Mn addition<\/li>\n                            <\/ul>\n                        <\/div>\n                        \n                        <div class=\"bg-white p-4 rounded-lg shadow-sm border-l-4 border-red-400\">\n                            <h5 class=\"font-semibold text-red-700 mb-2\">\u26a1 Critical Ratios<\/h5>\n                            <ul class=\"text-sm text-gray-600 space-y-1\">\n                                <li>\u2022 <strong>Mn\/S:<\/strong> >20 (preferably >30)<\/li>\n                                <li>\u2022 <strong>C\/P:<\/strong> Monitor for cold shortness<\/li>\n                                <li>\u2022 <strong>Si+Al:<\/strong> 0.20-0.60% total deoxidation<\/li>\n                            <\/ul>\n                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/div>\n\n            <!-- Charge Mix Optimization -->\n            <div class=\"mt-6 bg-gradient-to-br from-green-50 to-emerald-50 p-6 rounded-lg\">\n                <h4 class=\"text-lg font-semibold text-gray-800 mb-4 flex items-center\">\n                    \u2699\ufe0f Charge Mix Optimization Guidelines\n                <\/h4>\n                <div class=\"grid grid-cols-1 md:grid-cols-3 gap-6\">\n                    <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                        <h5 class=\"font-semibold text-gray-700 mb-3\">\ud83d\udfe4 Sponge Iron (DRI)<\/h5>\n                        <ul class=\"text-sm text-gray-600 space-y-1\">\n                            <li>\u2022 <strong>Typical Range:<\/strong> 40-70%<\/li>\n                            <li>\u2022 <strong>Advantages:<\/strong> Low tramp elements, consistent quality<\/li>\n                            <li>\u2022 <strong>Considerations:<\/strong> Higher cost, oxidation losses<\/li>\n                            <li>\u2022 <strong>Metallization:<\/strong> >85% recommended<\/li>\n                        <\/ul>\n                    <\/div>\n                    \n                    <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                        <h5 class=\"font-semibold text-gray-700 mb-3\">\u267b\ufe0f Scrap Steel<\/h5>\n                        <ul class=\"text-sm text-gray-600 space-y-1\">\n                            <li>\u2022 <strong>Typical Range:<\/strong> 15-40%<\/li>\n                            <li>\u2022 <strong>Advantages:<\/strong> Lower cost, good yield<\/li>\n                            <li>\u2022 <strong>Risks:<\/strong> Tramp elements (Cu, Sn, Cr)<\/li>\n                            <li>\u2022 <strong>Quality:<\/strong> Use clean, sorted scrap<\/li>\n                        <\/ul>\n                    <\/div>\n                    \n                    <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                        <h5 class=\"font-semibold text-gray-700 mb-3\">\u26ab Pig Iron<\/h5>\n                        <ul class=\"text-sm text-gray-600 space-y-1\">\n                            <li>\u2022 <strong>Typical Range:<\/strong> 10-30%<\/li>\n                            <li>\u2022 <strong>Function:<\/strong> Carbon source, dilution<\/li>\n                            <li>\u2022 <strong>Benefits:<\/strong> High yield, known chemistry<\/li>\n                            <li>\u2022 <strong>Limit:<\/strong> High Si pig iron increases Si content<\/li>\n                        <\/ul>\n                    <\/div>\n                <\/div>\n            <\/div>\n\n            <!-- Ferroalloy Addition Guidelines -->\n            <div class=\"mt-6 bg-gradient-to-br from-purple-50 to-indigo-50 p-6 rounded-lg\">\n                <h4 class=\"text-lg font-semibold text-gray-800 mb-4 flex items-center\">\n                    \ud83d\udd2c Ferroalloy Addition Strategy\n                <\/h4>\n                <div class=\"grid grid-cols-1 md:grid-cols-2 gap-6\">\n                    <div class=\"space-y-4\">\n                        <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                            <h5 class=\"font-semibold text-gray-700 mb-2\">\ud83d\udd39 SiMn (Silico-Manganese)<\/h5>\n                            <ul class=\"text-sm text-gray-600 space-y-1\">\n                                <li>\u2022 <strong>Timing:<\/strong> Primary deoxidation stage<\/li>\n                                <li>\u2022 <strong>Typical Addition:<\/strong> 2-5 kg\/ton<\/li>\n                                <li>\u2022 <strong>Recovery:<\/strong> Si: 50-70%, Mn: 85-95%<\/li>\n                                <li>\u2022 <strong>Function:<\/strong> Combined Si-Mn deoxidation<\/li>\n                            <\/ul>\n                        <\/div>\n                        \n                        <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                            <h5 class=\"font-semibold text-gray-700 mb-2\">\ud83d\udd38 FeMn (Ferro-Manganese)<\/h5>\n                            <ul class=\"text-sm text-gray-600 space-y-1\">\n                                <li>\u2022 <strong>Timing:<\/strong> Final adjustment stage<\/li>\n                                <li>\u2022 <strong>Typical Addition:<\/strong> 1-3 kg\/ton<\/li>\n                                <li>\u2022 <strong>Recovery:<\/strong> Mn: 90-95%<\/li>\n                                <li>\u2022 <strong>Function:<\/strong> Mn adjustment, desulfurization aid<\/li>\n                            <\/ul>\n                        <\/div>\n                    <\/div>\n                    \n                    <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                        <h5 class=\"font-semibold text-gray-700 mb-3\">\ud83d\udccb Addition Sequence<\/h5>\n                        <ol class=\"text-sm text-gray-600 space-y-2\">\n                            <li><strong>1. Melting:<\/strong> Charge metallic materials<\/li>\n                            <li><strong>2. Refining:<\/strong> Slag formation, P removal<\/li>\n                            <li><strong>3. Deoxidation:<\/strong> Add SiMn for primary deox<\/li>\n                            <li><strong>4. Adjustment:<\/strong> FeMn for final Mn level<\/li>\n                            <li><strong>5. Final Deox:<\/strong> Al wire\/powder if required<\/li>\n                            <li><strong>6. Casting:<\/strong> Temperature and chemistry check<\/li>\n                        <\/ol>\n                        \n                        <div class=\"mt-4 p-3 bg-yellow-50 border-l-4 border-yellow-400 rounded\">\n                            <p class=\"text-sm text-yellow-800\">\n                                <strong>\ud83d\udca1 Pro Tip:<\/strong> Always add ferroalloys in small portions to avoid temperature drop and ensure proper mixing.\n                            <\/p>\n                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/div>\n\n            <!-- Reduction Reactions & Furnace Chemistry -->\n            <div class=\"mt-6 bg-gradient-to-br from-yellow-50 to-orange-50 p-6 rounded-lg\">\n                <h4 class=\"text-lg font-semibold text-gray-800 mb-4 flex items-center\">\n                    \u2697\ufe0f Reduction Reactions &#038; Furnace Chemistry\n                <\/h4>\n                \n                <div class=\"grid grid-cols-1 lg:grid-cols-2 gap-6 mb-6\">\n                    <!-- Primary Reduction Reactions -->\n                    <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                        <h5 class=\"font-semibold text-gray-700 mb-3\">\ud83d\udd25 Primary Reduction Reactions<\/h5>\n                        <div class=\"space-y-3 text-sm\">\n                            <div class=\"p-3 bg-red-50 rounded border-l-4 border-red-400\">\n                                <strong>Iron Oxide Reduction (DRI\/Sponge Iron):<\/strong>\n                                <div class=\"mt-1 font-mono text-xs\">\n                                    Fe\u2082O\u2083 + 3CO \u2192 2Fe + 3CO\u2082<br>\n                                    FeO + CO \u2192 Fe + CO\u2082\n                                <\/div>\n                                <p class=\"mt-2 text-gray-600\">Residual oxides in DRI continue reducing in furnace<\/p>\n                            <\/div>\n                            \n                            <div class=\"p-3 bg-blue-50 rounded border-l-4 border-blue-400\">\n                                <strong>Silicon Reduction (from SiMn):<\/strong>\n                                <div class=\"mt-1 font-mono text-xs\">\n                                    SiO\u2082 + 2C \u2192 Si + 2CO<br>\n                                    2SiO\u2082 + Si \u2192 3SiO (volatile)\n                                <\/div>\n                                <p class=\"mt-2 text-gray-600\">High temperature reaction, significant Si losses possible<\/p>\n                            <\/div>\n                            \n                            <div class=\"p-3 bg-green-50 rounded border-l-4 border-green-400\">\n                                <strong>Manganese Reduction:<\/strong>\n                                <div class=\"mt-1 font-mono text-xs\">\n                                    MnO + C \u2192 Mn + CO<br>\n                                    MnO\u2082 + 2C \u2192 Mn + 2CO\n                                <\/div>\n                                <p class=\"mt-2 text-gray-600\">Better recovery than Si, stable in steel bath<\/p>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    \n                    <!-- Oxidation & Loss Mechanisms -->\n                    <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                        <h5 class=\"font-semibold text-gray-700 mb-3\">\ud83d\udca8 Oxidation &#038; Loss Mechanisms<\/h5>\n                        <div class=\"space-y-3 text-sm\">\n                            <div class=\"p-3 bg-orange-50 rounded border-l-4 border-orange-400\">\n                                <strong>Carbon Oxidation:<\/strong>\n                                <div class=\"mt-1 font-mono text-xs\">\n                                    C + \u00bdO\u2082 \u2192 CO<br>\n                                    C + CO\u2082 \u2192 2CO\n                                <\/div>\n                                <p class=\"mt-2 text-gray-600\">Primary decarburization mechanism during refining<\/p>\n                            <\/div>\n                            \n                            <div class=\"p-3 bg-purple-50 rounded border-l-4 border-purple-400\">\n                                <strong>Silicon Oxidation:<\/strong>\n                                <div class=\"mt-1 font-mono text-xs\">\n                                    Si + O\u2082 \u2192 SiO\u2082<br>\n                                    2Si + O\u2082 \u2192 2SiO (gas)\n                                <\/div>\n                                <p class=\"mt-2 text-gray-600\">Forms slag, volatile losses at high temp<\/p>\n                            <\/div>\n                            \n                            <div class=\"p-3 bg-pink-50 rounded border-l-4 border-pink-400\">\n                                <strong>Iron Oxidation:<\/strong>\n                                <div class=\"mt-1 font-mono text-xs\">\n                                    2Fe + O\u2082 \u2192 2FeO<br>\n                                    3Fe + 2O\u2082 \u2192 Fe\u2083O\u2084\n                                <\/div>\n                                <p class=\"mt-2 text-gray-600\">Yield loss, increases slag FeO content<\/p>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n                \n                <!-- Charge Mix Specific Reactions -->\n                <div class=\"bg-white p-4 rounded-lg shadow-sm mb-6\">\n                    <h5 class=\"font-semibold text-gray-700 mb-3\">\ud83c\udfaf Your Charge Mix &#8211; Expected Reactions<\/h5>\n                    <div id=\"reactionGuidance\" class=\"grid grid-cols-1 md:grid-cols-2 gap-4\">\n                        <!-- This will be populated by JavaScript based on current charge mix -->\n                    <\/div>\n                <\/div>\n                \n                <!-- Thermodynamic Considerations -->\n                <div class=\"grid grid-cols-1 lg:grid-cols-2 gap-4 sm:gap-6\">\n                    <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                        <h5 class=\"font-semibold text-gray-700 mb-3\">\ud83c\udf21\ufe0f Temperature-Dependent Reactions<\/h5>\n                        <div class=\"space-y-3 text-sm\">\n                            <div class=\"p-2 bg-gray-50 rounded\">\n                                <strong>1400-1500\u00b0C (Melting Zone):<\/strong>\n                                <ul class=\"mt-1 text-gray-600 ml-4\">\n                                    <li>\u2022 DRI residual oxide reduction<\/li>\n                                    <li>\u2022 Initial carbon dissolution<\/li>\n                                    <li>\u2022 Slag formation begins<\/li>\n                                <\/ul>\n                            <\/div>\n                            <div class=\"p-2 bg-gray-50 rounded\">\n                                <strong>1500-1600\u00b0C (Refining Zone):<\/strong>\n                                <ul class=\"mt-1 text-gray-600 ml-4\">\n                                    <li>\u2022 Active decarburization<\/li>\n                                    <li>\u2022 Phosphorus removal<\/li>\n                                    <li>\u2022 Sulfur partition to slag<\/li>\n                                <\/ul>\n                            <\/div>\n                            <div class=\"p-2 bg-gray-50 rounded\">\n                                <strong>1600-1700\u00b0C (Superheating):<\/strong>\n                                <ul class=\"mt-1 text-gray-600 ml-4\">\n                                    <li>\u2022 Ferroalloy dissolution<\/li>\n                                    <li>\u2022 Final deoxidation<\/li>\n                                    <li>\u2022 Inclusion flotation<\/li>\n                                <\/ul>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                    \n                    <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                        <h5 class=\"font-semibold text-gray-700 mb-3\">\u2696\ufe0f Equilibrium Considerations<\/h5>\n                        <div class=\"space-y-3 text-sm\">\n                            <div class=\"p-2 bg-blue-50 rounded\">\n                                <strong>Carbon-Oxygen Equilibrium:<\/strong>\n                                <p class=\"text-gray-600 mt-1\">CO formation limits final C content based on temperature and pressure<\/p>\n                            <\/div>\n                            <div class=\"p-2 bg-green-50 rounded\">\n                                <strong>Deoxidation Equilibrium:<\/strong>\n                                <p class=\"text-gray-600 mt-1\">Si, Mn, Al compete for oxygen &#8211; addition sequence matters<\/p>\n                            <\/div>\n                            <div class=\"p-2 bg-yellow-50 rounded\">\n                                <strong>Slag-Metal Equilibrium:<\/strong>\n                                <p class=\"text-gray-600 mt-1\">P, S distribution depends on slag basicity and temperature<\/p>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n            <\/div>\n\n            <!-- Process Parameters -->\n            <div class=\"mt-6 bg-gradient-to-br from-orange-50 to-red-50 p-6 rounded-lg\">\n                <h4 class=\"text-lg font-semibold text-gray-800 mb-4 flex items-center\">\n                    \ud83c\udf21\ufe0f Critical Process Parameters\n                <\/h4>\n                <div class=\"grid grid-cols-1 md:grid-cols-2 gap-6\">\n                    <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                        <h5 class=\"font-semibold text-gray-700 mb-3\">Temperature Control<\/h5>\n                        <ul class=\"text-sm text-gray-600 space-y-1\">\n                            <li>\u2022 <strong>Melting:<\/strong> 1580-1620\u00b0C<\/li>\n                            <li>\u2022 <strong>Refining:<\/strong> 1600-1650\u00b0C<\/li>\n                            <li>\u2022 <strong>Tapping:<\/strong> 1650-1680\u00b0C<\/li>\n                            <li>\u2022 <strong>Casting:<\/strong> 1520-1560\u00b0C<\/li>\n                        <\/ul>\n                    <\/div>\n                    \n                    <div class=\"bg-white p-4 rounded-lg shadow-sm\">\n                        <h5 class=\"font-semibold text-gray-700 mb-3\">Slag Management<\/h5>\n                        <ul class=\"text-sm text-gray-600 space-y-1\">\n                            <li>\u2022 <strong>Basicity (CaO\/SiO\u2082):<\/strong> 2.5-3.5<\/li>\n                            <li>\u2022 <strong>FeO Content:<\/strong> <15% for good yield<\/li>\n                            <li>\u2022 <strong>MgO Saturation:<\/strong> 8-12%<\/li>\n                            <li>\u2022 <strong>Fluidity:<\/strong> Maintain proper viscosity<\/li>\n                        <\/ul>\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n\n    <\/div>\n\n    <script>\n        function updateReactionGuidance() {\n            const rows = document.querySelectorAll(\"#chargeTable tbody tr\");\n            const materials = [];\n            \n            rows.forEach((r, index) => {\n                const cells = r.querySelectorAll(\"input\");\n                const materialNames = ['Sponge Iron', 'Pig Iron', 'Scrap', 'SiMn', 'FeMn'];\n                materials.push({\n                    name: materialNames[index],\n                    percentage: parseFloat(cells[0].value),\n                    carbon: parseFloat(cells[3].value),\n                    manganese: parseFloat(cells[4].value),\n                    silicon: parseFloat(cells[5].value)\n                });\n            });\n\n            let guidance = '';\n            \n            \/\/ Sponge Iron guidance\n            if (materials[0].percentage > 0) {\n                guidance += `\n                    <div class=\"p-3 bg-orange-50 rounded border-l-4 border-orange-400\">\n                        <strong>\ud83d\udfe4 Sponge Iron (${materials[0].percentage}%):<\/strong>\n                        <ul class=\"mt-2 text-sm text-gray-600 space-y-1\">\n                            <li>\u2022 Residual FeO reduction: FeO + C \u2192 Fe + CO<\/li>\n                            <li>\u2022 Expected yield loss: ~${(100 - 85).toFixed(0)}% due to oxidation<\/li>\n                            <li>\u2022 Carbon pickup from residual char<\/li>\n                            <li>\u2022 Requires good slag coverage for protection<\/li>\n                        <\/ul>\n                    <\/div>\n                `;\n            }\n            \n            \/\/ Pig Iron guidance\n            if (materials[1].percentage > 0) {\n                guidance += `\n                    <div class=\"p-3 bg-gray-50 rounded border-l-4 border-gray-400\">\n                        <strong>\u26ab Pig Iron (${materials[1].percentage}%):<\/strong>\n                        <ul class=\"mt-2 text-sm text-gray-600 space-y-1\">\n                            <li>\u2022 High carbon source (${materials[1].carbon}%)<\/li>\n                            <li>\u2022 Minimal reduction reactions needed<\/li>\n                            <li>\u2022 Silicon oxidation: Si + O\u2082 \u2192 SiO\u2082 (slag)<\/li>\n                            <li>\u2022 Excellent yield (~95%)<\/li>\n                        <\/ul>\n                    <\/div>\n                `;\n            }\n            \n            \/\/ SiMn guidance\n            if (materials[3].percentage > 0) {\n                guidance += `\n                    <div class=\"p-3 bg-blue-50 rounded border-l-4 border-blue-400\">\n                        <strong>\ud83d\udd39 SiMn Addition (${materials[3].percentage}%):<\/strong>\n                        <ul class=\"mt-2 text-sm text-gray-600 space-y-1\">\n                            <li>\u2022 Primary deoxidation: Si + 2FeO \u2192 SiO\u2082 + 2Fe<\/li>\n                            <li>\u2022 Mn deoxidation: Mn + FeO \u2192 MnO + Fe<\/li>\n                            <li>\u2022 Si recovery: ~60-70% (losses to slag\/volatilization)<\/li>\n                            <li>\u2022 Mn recovery: ~90-95%<\/li>\n                        <\/ul>\n                    <\/div>\n                `;\n            }\n            \n            \/\/ FeMn guidance\n            if (materials[4].percentage > 0) {\n                guidance += `\n                    <div class=\"p-3 bg-green-50 rounded border-l-4 border-green-400\">\n                        <strong>\ud83d\udd38 FeMn Addition (${materials[4].percentage}%):<\/strong>\n                        <ul class=\"mt-2 text-sm text-gray-600 space-y-1\">\n                            <li>\u2022 Secondary Mn adjustment<\/li>\n                            <li>\u2022 Desulfurization aid: Mn + S \u2192 MnS<\/li>\n                            <li>\u2022 High Mn recovery: ~95%<\/li>\n                            <li>\u2022 Add after primary deoxidation<\/li>\n                        <\/ul>\n                    <\/div>\n                `;\n            }\n            \n            document.getElementById('reactionGuidance').innerHTML = guidance;\n        }\n\n        function generateProcessRecommendations(finalChem, materials) {\n            let recommendations = '';\n            \n            \/\/ Carbon recommendations\n            if (finalChem.C > 1.0) {\n                recommendations += `\n                    <div class=\"p-4 bg-red-50 rounded-lg border-l-4 border-red-400\">\n                        <h5 class=\"font-semibold text-red-700 mb-2\">\u26a0\ufe0f High Carbon Content (${finalChem.C.toFixed(2)}%)<\/h5>\n                        <ul class=\"text-sm text-gray-700 space-y-1\">\n                            <li>\u2022 Extend refining time for decarburization<\/li>\n                            <li>\u2022 Increase oxygen injection rate<\/li>\n                            <li>\u2022 Monitor CO evolution carefully<\/li>\n                            <li>\u2022 Consider reducing pig iron percentage<\/li>\n                        <\/ul>\n                    <\/div>\n                `;\n            } else if (finalChem.C < 0.1) {\n                recommendations += `\n                    <div class=\"p-4 bg-yellow-50 rounded-lg border-l-4 border-yellow-400\">\n                        <h5 class=\"font-semibold text-yellow-700 mb-2\">\u26a1 Low Carbon Content (${finalChem.C.toFixed(2)}%)<\/h5>\n                        <ul class=\"text-sm text-gray-700 space-y-1\">\n                            <li>\u2022 Reduce decarburization time<\/li>\n                            <li>\u2022 Lower oxygen injection rate<\/li>\n                            <li>\u2022 Consider carbon addition if needed<\/li>\n                            <li>\u2022 Monitor for over-oxidation<\/li>\n                        <\/ul>\n                    <\/div>\n                `;\n            }\n            \n            \/\/ Silicon recommendations\n            if (finalChem.Si > 0.5) {\n                recommendations += `\n                    <div class=\"p-4 bg-blue-50 rounded-lg border-l-4 border-blue-400\">\n                        <h5 class=\"font-semibold text-blue-700 mb-2\">\ud83d\udd39 High Silicon Level (${finalChem.Si.toFixed(2)}%)<\/h5>\n                        <ul class=\"text-sm text-gray-700 space-y-1\">\n                            <li>\u2022 Excellent deoxidation achieved<\/li>\n                            <li>\u2022 Monitor for SiO\u2082 slag formation<\/li>\n                            <li>\u2022 Suitable for killed steel grades<\/li>\n                            <li>\u2022 May need slag basicity adjustment<\/li>\n                        <\/ul>\n                    <\/div>\n                `;\n            } else if (finalChem.Si < 0.1) {\n                recommendations += `\n                    <div class=\"p-4 bg-orange-50 rounded-lg border-l-4 border-orange-400\">\n                        <h5 class=\"font-semibold text-orange-700 mb-2\">\u26a0\ufe0f Low Silicon Level (${finalChem.Si.toFixed(2)}%)<\/h5>\n                        <ul class=\"text-sm text-gray-700 space-y-1\">\n                            <li>\u2022 Insufficient deoxidation - add more SiMn<\/li>\n                            <li>\u2022 Risk of rimming steel behavior<\/li>\n                            <li>\u2022 Consider aluminum wire addition<\/li>\n                            <li>\u2022 Monitor oxygen content closely<\/li>\n                        <\/ul>\n                    <\/div>\n                `;\n            }\n            \n            \/\/ Manganese recommendations\n            const mnSRatio = finalChem.Mn \/ finalChem.S;\n            if (mnSRatio < 20) {\n                recommendations += `\n                    <div class=\"p-4 bg-red-50 rounded-lg border-l-4 border-red-400\">\n                        <h5 class=\"font-semibold text-red-700 mb-2\">\ud83d\udea8 Critical Mn\/S Ratio (${mnSRatio.toFixed(1)}:1)<\/h5>\n                        <ul class=\"text-sm text-gray-700 space-y-1\">\n                            <li>\u2022 Risk of hot shortness - increase Mn content<\/li>\n                            <li>\u2022 Add more FeMn or SiMn<\/li>\n                            <li>\u2022 Consider desulfurization treatment<\/li>\n                            <li>\u2022 Target Mn\/S ratio >20:1<\/li>\n                        <\/ul>\n                    <\/div>\n                `;\n            }\n            \n            \/\/ Phosphorus recommendations\n            if (finalChem.P > 0.045) {\n                recommendations += `\n                    <div class=\"p-4 bg-red-50 rounded-lg border-l-4 border-red-400\">\n                        <h5 class=\"font-semibold text-red-700 mb-2\">\u26a0\ufe0f High Phosphorus (${finalChem.P.toFixed(3)}%)<\/h5>\n                        <ul class=\"text-sm text-gray-700 space-y-1\">\n                            <li>\u2022 Increase slag basicity (CaO\/SiO\u2082 >3.0)<\/li>\n                            <li>\u2022 Extend refining time<\/li>\n                            <li>\u2022 Add more lime for P removal<\/li>\n                            <li>\u2022 Consider using lower P raw materials<\/li>\n                        <\/ul>\n                    <\/div>\n                `;\n            }\n            \n            \/\/ Temperature recommendations based on charge mix\n            const spongeIronPct = materials ? materials.find(m => m.name === 'Sponge Iron')?.percentage || 0 : 0;\n            if (spongeIronPct > 60) {\n                recommendations += `\n                    <div class=\"p-4 bg-purple-50 rounded-lg border-l-4 border-purple-400\">\n                        <h5 class=\"font-semibold text-purple-700 mb-2\">\ud83c\udf21\ufe0f High DRI Charge (${spongeIronPct}%)<\/h5>\n                        <ul class=\"text-sm text-gray-700 space-y-1\">\n                            <li>\u2022 Maintain higher tapping temperature (1680-1700\u00b0C)<\/li>\n                            <li>\u2022 Ensure adequate slag coverage<\/li>\n                            <li>\u2022 Monitor for reoxidation during tapping<\/li>\n                            <li>\u2022 Consider preheating DRI if possible<\/li>\n                        <\/ul>\n                    <\/div>\n                `;\n            }\n            \n            \/\/ General process recommendations\n            recommendations += `\n                <div class=\"p-4 bg-green-50 rounded-lg border-l-4 border-green-400\">\n                    <h5 class=\"font-semibold text-green-700 mb-2\">\u2705 General Process Guidelines<\/h5>\n                    <ul class=\"text-sm text-gray-700 space-y-1\">\n                        <li>\u2022 Maintain slag FeO <15% for good yield<\/li>\n                        <li>\u2022 Add ferroalloys in small portions<\/li>\n                        <li>\u2022 Check temperature before each addition<\/li>\n                        <li>\u2022 Sample for chemistry after deoxidation<\/li>\n                        <li>\u2022 Ensure proper inclusion flotation time<\/li>\n                    <\/ul>\n                <\/div>\n            `;\n            \n            const recommendationsContainer = document.getElementById('processRecommendations');\n            if (recommendationsContainer) {\n                recommendationsContainer.innerHTML = recommendations;\n            }\n        }\n\n        function updatePerformanceChart(data) {\n            const canvas = document.getElementById('performanceChart');\n            if (!canvas) return;\n            \n            const ctx = canvas.getContext('2d');\n            \n            \/\/ Make canvas responsive\n            const container = canvas.parentElement;\n            const containerWidth = container.clientWidth;\n            const isMobile = window.innerWidth < 640;\n            \n            \/\/ Adjust canvas size based on screen size\n            const width = Math.min(800, containerWidth - 20);\n            const height = isMobile ? 300 : 400;\n            \n            canvas.width = width;\n            canvas.height = height;\n            \n            \/\/ Clear canvas\n            ctx.clearRect(0, 0, width, height);\n            \n            \/\/ Chart dimensions\n            const margin = 60;\n            const chartWidth = width - 2 * margin;\n            const chartHeight = height - 2 * margin;\n            \n            \/\/ Background\n            ctx.fillStyle = '#f8fafc';\n            ctx.fillRect(0, 0, width, height);\n            \n            \/\/ Chart background\n            ctx.fillStyle = '#ffffff';\n            ctx.fillRect(margin, margin, chartWidth, chartHeight);\n            \n            \/\/ Grid lines\n            ctx.strokeStyle = '#e2e8f0';\n            ctx.lineWidth = 1;\n            \n            \/\/ Vertical grid lines\n            for (let i = 0; i <= 5; i++) {\n                const x = margin + (i * chartWidth \/ 5);\n                ctx.beginPath();\n                ctx.moveTo(x, margin);\n                ctx.lineTo(x, margin + chartHeight);\n                ctx.stroke();\n            }\n            \n            \/\/ Horizontal grid lines\n            for (let i = 0; i <= 4; i++) {\n                const y = margin + (i * chartHeight \/ 4);\n                ctx.beginPath();\n                ctx.moveTo(margin, y);\n                ctx.lineTo(margin + chartWidth, y);\n                ctx.stroke();\n            }\n            \n            \/\/ Chart border\n            ctx.strokeStyle = '#cbd5e1';\n            ctx.lineWidth = 2;\n            ctx.strokeRect(margin, margin, chartWidth, chartHeight);\n            \n            \/\/ Data points\n            const metrics = [\n                { label: 'Yield %', value: data.yield, color: '#10b981', target: 90 },\n                { label: 'Cost\/Ton (\u20b9K)', value: data.costPerTon \/ 1000, color: '#f59e0b', target: 45 },\n                { label: 'Carbon %', value: data.chemistry.C * 20, color: '#ef4444', target: 10 },\n                { label: 'Mn\/S Ratio', value: (data.chemistry.Mn \/ data.chemistry.S) \/ 5, color: '#8b5cf6', target: 8 },\n                { label: 'Si Level', value: data.chemistry.Si * 100, color: '#06b6d4', target: 25 }\n            ];\n            \n            const barWidth = chartWidth \/ (metrics.length * 1.5);\n            \n            metrics.forEach((metric, index) => {\n                const x = margin + (index + 0.5) * (chartWidth \/ metrics.length);\n                const normalizedValue = Math.min(metric.value, 100);\n                const barHeight = (normalizedValue \/ 100) * chartHeight;\n                const y = margin + chartHeight - barHeight;\n                \n                \/\/ Target line\n                const targetHeight = (metric.target \/ 100) * chartHeight;\n                const targetY = margin + chartHeight - targetHeight;\n                ctx.strokeStyle = '#dc2626';\n                ctx.lineWidth = 2;\n                ctx.setLineDash([5, 5]);\n                ctx.beginPath();\n                ctx.moveTo(x - barWidth\/2, targetY);\n                ctx.lineTo(x + barWidth\/2, targetY);\n                ctx.stroke();\n                ctx.setLineDash([]);\n                \n                \/\/ Bar\n                const gradient = ctx.createLinearGradient(0, y, 0, y + barHeight);\n                gradient.addColorStop(0, metric.color);\n                gradient.addColorStop(1, metric.color + '80');\n                \n                ctx.fillStyle = gradient;\n                ctx.fillRect(x - barWidth\/2, y, barWidth, barHeight);\n                \n                \/\/ Bar border\n                ctx.strokeStyle = metric.color;\n                ctx.lineWidth = 2;\n                ctx.strokeRect(x - barWidth\/2, y, barWidth, barHeight);\n                \n                \/\/ Value text\n                ctx.fillStyle = '#1f2937';\n                ctx.font = 'bold 12px Arial';\n                ctx.textAlign = 'center';\n                ctx.fillText(metric.value.toFixed(1), x, y - 5);\n                \n                \/\/ Label\n                ctx.font = '10px Arial';\n                ctx.save();\n                ctx.translate(x, margin + chartHeight + 15);\n                ctx.rotate(-Math.PI \/ 4);\n                ctx.textAlign = 'right';\n                ctx.fillText(metric.label, 0, 0);\n                ctx.restore();\n            });\n            \n            \/\/ Title\n            ctx.fillStyle = '#1f2937';\n            ctx.font = 'bold 16px Arial';\n            ctx.textAlign = 'center';\n            ctx.fillText('Real-time Performance Metrics', width \/ 2, 25);\n            \n            \/\/ Legend\n            ctx.font = '10px Arial';\n            ctx.textAlign = 'left';\n            ctx.fillStyle = '#dc2626';\n            ctx.fillText('--- Target Level', margin, height - 10);\n        }\n\n        function calculate() {\n            try {\n                const total = parseFloat(document.getElementById(\"totalHeat\").value) || 10;\n                const rows = document.querySelectorAll(\"#chargeTable tbody tr\");\n                let sumWeight = 0, metalOut = 0, cost = 0;\n                let el = {C: 0, Mn: 0, Si: 0, P: 0, S: 0};\n\n                rows.forEach(r => {\n                    const cells = r.querySelectorAll(\"input\");\n                    const pct = parseFloat(cells[0].value) || 0;\n                    const yieldP = parseFloat(cells[1].value) || 0;\n                    const rate = parseFloat(cells[2].value) || 0;\n                    const weight = total * pct \/ 100;\n                    const output = weight * yieldP \/ 100;\n                    metalOut += output;\n                    cost += weight * rate;\n                    el.C += output * (parseFloat(cells[3].value) || 0) \/ 100;\n                    el.Mn += output * (parseFloat(cells[4].value) || 0) \/ 100;\n                    el.Si += output * (parseFloat(cells[5].value) || 0) \/ 100;\n                    el.P += output * (parseFloat(cells[6].value) || 0) \/ 100;\n                    el.S += output * (parseFloat(cells[7].value) || 0) \/ 100;\n                    sumWeight += weight;\n                });\n\n                \/\/ Final chemistry as weighted average\n                const finalChem = {\n                    C: metalOut > 0 ? (el.C \/ metalOut) * 100 : 0,\n                    Mn: metalOut > 0 ? (el.Mn \/ metalOut) * 100 : 0,\n                    Si: metalOut > 0 ? (el.Si \/ metalOut) * 100 : 0,\n                    P: metalOut > 0 ? (el.P \/ metalOut) * 100 : 0,\n                    S: metalOut > 0 ? (el.S \/ metalOut) * 100 : 0\n                };\n\n                const avgYield = sumWeight > 0 ? (metalOut \/ sumWeight) * 100 : 0;\n                const powerTot = metalOut * (parseFloat(document.getElementById(\"kwhTon\").value) || 600) * (parseFloat(document.getElementById(\"powerCost\").value) || 8);\n                const other = metalOut * (parseFloat(document.getElementById(\"otherCost\").value) || 2500);\n                const totalCost = cost + powerTot + other;\n                const costPerTon = metalOut > 0 ? totalCost \/ metalOut : 0;\n                \n                \/\/ Update reaction guidance based on current charge mix\n                updateReactionGuidance();\n                \n                \/\/ Get materials data for recommendations\n                const materialsData = [];\n                rows.forEach((r, index) => {\n                    const cells = r.querySelectorAll(\"input\");\n                    const materialNames = ['Sponge Iron', 'Pig Iron', 'Scrap', 'SiMn', 'FeMn'];\n                    materialsData.push({\n                        name: materialNames[index],\n                        percentage: parseFloat(cells[0].value) || 0\n                    });\n                });\n                \n                \/\/ Update performance chart\n                const chartData = {\n                    yield: avgYield,\n                    costPerTon: costPerTon,\n                    chemistry: finalChem\n                };\n                updatePerformanceChart(chartData);\n                \n                \/\/ Generate process recommendations\n                generateProcessRecommendations(finalChem, materialsData);\n\n                \/\/ Show results container\n                document.getElementById(\"resultsContainer\").classList.remove(\"hidden\");\n\n                document.getElementById(\"results\").innerHTML = `\n                    <div class=\"grid grid-cols-1 lg:grid-cols-2 gap-4 sm:gap-6\">\n                        <!-- Production Summary -->\n                        <div class=\"bg-gradient-to-br from-blue-50 to-indigo-50 p-6 rounded-lg\">\n                            <h4 class=\"text-lg font-semibold text-gray-800 mb-4 flex items-center\">\n                                \ud83c\udfed Production Summary\n                            <\/h4>\n                            <div class=\"space-y-3\">\n                                <div class=\"flex justify-between items-center\">\n                                    <span class=\"text-gray-600\">Total Charge:<\/span>\n                                    <span class=\"font-semibold text-gray-800\">${sumWeight.toFixed(2)} tons<\/span>\n                                <\/div>\n                                <div class=\"flex justify-between items-center\">\n                                    <span class=\"text-gray-600\">Liquid Metal Output:<\/span>\n                                    <span class=\"font-semibold text-green-600\">${metalOut.toFixed(2)} tons<\/span>\n                                <\/div>\n                                <div class=\"flex justify-between items-center\">\n                                    <span class=\"text-gray-600\">Average Yield:<\/span>\n                                    <span class=\"font-semibold text-blue-600\">${avgYield.toFixed(2)}%<\/span>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n\n                        <!-- Cost Analysis -->\n                        <div class=\"bg-gradient-to-br from-green-50 to-emerald-50 p-6 rounded-lg\">\n                            <h4 class=\"text-lg font-semibold text-gray-800 mb-4 flex items-center\">\n                                \ud83d\udcb0 Cost Analysis\n                            <\/h4>\n                            <div class=\"space-y-3\">\n                                <div class=\"flex justify-between items-center\">\n                                    <span class=\"text-gray-600\">Raw Materials:<\/span>\n                                    <span class=\"font-semibold text-gray-800\">\u20b9${cost.toFixed(0)}<\/span>\n                                <\/div>\n                                <div class=\"flex justify-between items-center\">\n                                    <span class=\"text-gray-600\">Power Cost:<\/span>\n                                    <span class=\"font-semibold text-gray-800\">\u20b9${powerTot.toFixed(0)}<\/span>\n                                <\/div>\n                                <div class=\"flex justify-between items-center\">\n                                    <span class=\"text-gray-600\">Other Costs:<\/span>\n                                    <span class=\"font-semibold text-gray-800\">\u20b9${other.toFixed(0)}<\/span>\n                                <\/div>\n                                <hr class=\"border-gray-300\">\n                                <div class=\"flex justify-between items-center\">\n                                    <span class=\"text-gray-600 font-semibold\">Total Cost:<\/span>\n                                    <span class=\"font-bold text-green-600 text-lg\">\u20b9${totalCost.toFixed(0)}<\/span>\n                                <\/div>\n                                <div class=\"flex justify-between items-center\">\n                                    <span class=\"text-gray-600 font-semibold\">Cost per Ton:<\/span>\n                                    <span class=\"font-bold text-green-600 text-lg\">\u20b9${costPerTon.toFixed(0)}<\/span>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n\n                    <!-- Final Chemistry -->\n                    <div class=\"mt-6 bg-gradient-to-br from-purple-50 to-pink-50 p-6 rounded-lg\">\n                        <h4 class=\"text-lg font-semibold text-gray-800 mb-4 flex items-center\">\n                            \ud83e\uddea Final Steel Chemistry (wt%)\n                        <\/h4>\n                        <div class=\"grid grid-cols-2 md:grid-cols-5 gap-4\">\n                            <div class=\"text-center bg-white p-3 rounded-lg shadow-sm\">\n                                <div class=\"text-sm text-gray-600\">Carbon<\/div>\n                                <div class=\"text-lg font-bold text-gray-800\">${finalChem.C.toFixed(2)}%<\/div>\n                            <\/div>\n                            <div class=\"text-center bg-white p-3 rounded-lg shadow-sm\">\n                                <div class=\"text-sm text-gray-600\">Manganese<\/div>\n                                <div class=\"text-lg font-bold text-gray-800\">${finalChem.Mn.toFixed(2)}%<\/div>\n                            <\/div>\n                            <div class=\"text-center bg-white p-3 rounded-lg shadow-sm\">\n                                <div class=\"text-sm text-gray-600\">Silicon<\/div>\n                                <div class=\"text-lg font-bold text-gray-800\">${finalChem.Si.toFixed(2)}%<\/div>\n                            <\/div>\n                            <div class=\"text-center bg-white p-3 rounded-lg shadow-sm\">\n                                <div class=\"text-sm text-gray-600\">Phosphorus<\/div>\n                                <div class=\"text-lg font-bold text-gray-800\">${finalChem.P.toFixed(3)}%<\/div>\n                            <\/div>\n                            <div class=\"text-center bg-white p-3 rounded-lg shadow-sm\">\n                                <div class=\"text-sm text-gray-600\">Sulfur<\/div>\n                                <div class=\"text-lg font-bold text-gray-800\">${finalChem.S.toFixed(3)}%<\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n\n                    <!-- Process Recommendations -->\n                    <div class=\"mt-6 bg-gradient-to-br from-indigo-50 to-blue-50 p-6 rounded-lg\">\n                        <h4 class=\"text-lg font-semibold text-gray-800 mb-4 flex items-center\">\n                            \ud83c\udfaf Process Recommendations Based on Your Mix\n                        <\/h4>\n                        <div id=\"processRecommendations\" class=\"space-y-4\">\n                            <!-- This will be populated by JavaScript -->\n                        <\/div>\n                    <\/div>\n                `;\n\n                \/\/ Scroll to results\n                document.getElementById(\"resultsContainer\").scrollIntoView({ behavior: 'smooth' });\n                \n            } catch (error) {\n                console.error('Calculation error:', error);\n                alert('Error in calculation. Please check your input values.');\n            }\n        }\n\n        \/\/ Initialize reaction guidance on page load\n        document.addEventListener('DOMContentLoaded', function() {\n            updateReactionGuidance();\n            \/\/ Auto-calculate on page load to show initial results\n            calculate();\n        });\n\n        \/\/ Auto-calculate on input changes\n        document.addEventListener('input', function(e) {\n            if (e.target.tagName === 'INPUT') {\n                \/\/ Update reaction guidance when inputs change\n                updateReactionGuidance();\n                \/\/ Auto-calculate after a short delay for real-time updates\n                clearTimeout(window.autoCalcTimer);\n                window.autoCalcTimer = setTimeout(calculate, 500);\n            }\n        });\n    <\/script>\n<script>(function(){function c(){var b=a.contentDocument||a.contentWindow.document;if(b){var d=b.createElement('script');d.innerHTML=\"window.__CF$cv$params={r:'98f1d10b87b4180c',t:'MTc2MDU1NzUyNC4wMDAwMDA='};var a=document.createElement('script');a.nonce='';a.src='\/cdn-cgi\/challenge-platform\/scripts\/jsd\/main.js';document.getElementsByTagName('head')[0].appendChild(a);\";b.getElementsByTagName('head')[0].appendChild(d)}}if(document.body){var a=document.createElement('iframe');a.height=1;a.width=1;a.style.position='absolute';a.style.top=0;a.style.left=0;a.style.border='none';a.style.visibility='hidden';document.body.appendChild(a);if('loading'!==document.readyState)c();else if(window.addEventListener)document.addEventListener('DOMContentLoaded',c);else{var e=document.onreadystatechange||function(){};document.onreadystatechange=function(b){e(b);'loading'!==document.readyState&&(document.onreadystatechange=e,c())}}}})();<\/script><\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>Charge mix calculation is the process of determining the optimal combination of raw materials\u2014like scrap, pig iron, sponge iron, and ferroalloys\u2014to be charged into the furnace. 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