Preparation of Chromium-iron Metal Powder from Chromium Slag by Reduction Roasting and Magnetic Separation

查看全文 作　　者：Hong-ming [1]LONG;Qing-min [1]MENG;Ping [1]WANG;Tie-jun [1]CHUN;Yong-lin [1]YAO

机构地区：[1]School of Metallurgical Engineering,Anhui University of Technology

出　　处：《Journal of Iron and Steel Research(International)》索引2015年第22卷第9期,共6页

基　　金：Sponsored by National Natural Science Foundation of China(50904001,U1260101);Program for Innovative Research Team in Anhui University of Technology(TD200909) 摘　　要：Chromium slag(CS)has become one of the most hazardous solid waste containing chromium and iron.Based on its characteristics,the technology of reduction roasting and magnetic separation was employed to treat CS.The major impurity element of CS is magnesium and it exists in magnesium ferrite phase,which is hard to recover iron in the absence of additives.During reduction roasting,additives(Al2O3and CaF2)could destroy the structure of magnesium ferrite and improve the iron grade and recovery.The final product,i.e.chromium-iron powder,contains 72.54% Fe and 13.56% Cr,with the iron recovery of 80.34% and chromium recovery of 80.70%. 关键词：还原焙烧磁选法铬铁铬渣金属粉制备危险固体废物铁回收率

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Preparation of Chromium-iron Metal Powder from Chromium Slag by Reduction Roasting and Magnetic Separation

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