Microwave-biochar synergistic carbon thermal reduction for the recovery of Fe and Cr from stainless steel dust: A waste upgrading strategy

Key Points

• Effective recovery of iron and chromium is accomplished through microwave-biochar carbon thermal reduction, improving metal recycling.
• The process shows an impressive recovery rate for both Fe and Cr, with enhanced efficiency compared to traditional methods.
• Assessment using carbon thermal reduction techniques demonstrates the effectiveness of microwave-biochar synergy in metal extraction.
• This method highlights potential environmental benefits by upgrading stainless steel dust, prompting further research on application scalability.