材料与冶金学报2025，Vol.24Issue(4)：370-378,9.DOI:10.14186/j.cnki.1671-6620.2025.04.008
不锈钢粉尘和铜渣协同碳热还原制备Fe-Cr-Ni-Cu合金
Preparation of Fe-Cr-Ni-Cu alloy by carbothermal co-reduction of stainless steel dust and copper slag
摘要
Abstract
To realize the efficient utilization of metal resources in stainless steel dust and copper slag,an innovative technology for reducing metal oxides by the carbon thermal method to make Fe-Cr-Ni-Cu alloy was proposed.The effects of n(C)/n(O)reduction time,reduction temperature on metal recovery rate and metal phase composition were determined by high-temperature experiments to obtain the optimal process parameters for improving the metal yield.Meanwhile,the growth mechanism of the metal phase and the carbothermal co-reduction mechanism of stainless steel dust and copper slag were analyzed.It was found that the metal recovery rate was higher when the n(C)/n(O)was 1.00,the reduction time was 20 minutes,and the reduction temperature was 1 500 ℃.The metal recovery rates of Fe,Cr,Ni,and Cu were 96.34％,91.04％,96.81％,and 96.46％,respectively.The grades of Fe,Cr,Ni,and Cu in alloy were 73.98％,19.55％,3.78％,and 1.36％,respectively.As the reduction time increased,the fine metallic phase particles aggregated,and large-sized particles were formed.The growth index of metallic phase particles was 1,and the growth rate constant was 1.23 μm/min.关键词
不锈钢粉尘/铜渣/协同碳热还原/Fe-Cr-Ni-Cu合金/金属收得率Key words
stainless steel dust/copper slag/carbothermal co-reduction/Fe-Cr-Ni-Cu alloy/metal recovery rate分类
矿业与冶金引用本文复制引用
么洪达,王楠,陈晓庆..不锈钢粉尘和铜渣协同碳热还原制备Fe-Cr-Ni-Cu合金[J].材料与冶金学报,2025,24(4):370-378,9.基金项目
国家自然科学基金项目(5227041674). （5227041674）
