工业铜渣固相改质后分离铁的实验研究  

Experimental Study on Iron Separation of Industrial Copper Slag After Solid Phase Modification

作　　者：蒋亮[1,2] 鄢洁 李鹏翔 张翔 马晓军 陈宇红 韩凤兰[1,2] JIANG Liang;YAN Jie;LI Peng-xiang;ZHANG Xiang;MA Xiao-jun;CHEN Yu-hong;HAN Feng-lan(School of Materials Science and Engineering,North Minzu University,Yinchuan 750021,Ningxia,China;Provincial and Ministerial Collaborative Key Laboratory of“Powder Materials and Special Ceramics”,Yinchuan 750021,Ningxia,China)

机构地区：[1]北方民族大学材料科学与工程学院,宁夏银川750021 [2]省部共建“粉体材料与特种陶瓷”重点实验室,宁夏银川750021

出　　处：《矿冶工程》2020年第1期96-100,共5页Mining and Metallurgical Engineering

基　　金：宁夏自然科学基金(2019AAC03100);国家自然科学基金(51964001);“粉体材料与特种陶瓷”重点实验室开放基金(1804);研究生教育创新计划项目(YXW201611);宁夏科技支撑计划项目(2017EZ08)

摘　　要：为有效回收铜渣中有价金属铁,对工业铜渣进行了成分改质,并对改质后铜渣进行了磁化焙烧-磁选实验研究。结果表明,将工业铜渣、氧化钙和氧化镁按照质量比20∶12∶100均匀混合并压制成坯料,经1200~1400℃焙烧2 h后进行快冷处理,能使工业铜渣中弱磁性铁橄榄石转变为易于磁选的强磁性镁铁尖晶石;在磁感应强度0.102 T时,对改质后铜渣进行湿式磁选,可获得铁品位64.78%、铁回收率82.62%的二次铁资源。Experimental Study on Iron Separation of Industrial Copper Slag After Solid Phase ModificationIn order to effectively recover the valuable metallic iron in copper slag,the industrial copper slag after compositions modification was subjected to a magnetizing roasting-magnetic separation process in an experimental study.The industrial copper slag,calcium oxide and magnesium oxide were uniformly mixed in a mass ratio of 20∶12∶100 and pressed into a billet,which was then subjected to a 2-h roasting at 1200~1400℃followed by a rapid cooling,resulting in the weakly-magnetic fayalite therein transformed into the highly-magnetic magnesia ferrite spinel that is prone to magnetic separation.With the magnetic induction intensity of 0.102 T,wet magnetic separation of the modified copper slag can yield the secondary iron resources grading 64.78%Fe at the recovery rate of 82.62%.

关 键 词：铜渣 改质 磁选 磁化焙烧 铁 

分 类 号：TF811[冶金工程—有色金属冶金] X758[环境科学与工程—环境工程]