由混合电镀污泥硫酸浸出液选择性沉淀分离铬的研究  

Recovery of chromium from sulphuric acid leaching solutions of mixed electroplating sludge by selective precipitation

作　　者：徐志峰[1] 赵洪兴[1] 王成彦[2] 袁文辉[3] 杨卜[3] 

机构地区：[1]江西理工大学冶金与化学工程学院,江西赣州341000 [2]北京科技大学冶金与生态工程学院,北京100083 [3]北京矿冶研究总院,北京100070

出　　处：《有色金属科学与工程》2015年第5期7-11,共5页Nonferrous Metals Science and Engineering

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA06A110);国家自然科学基金资助项目(51464018);江西省主要学科学术和技术带头人培养计划项目(20142BCB22005)

摘　　要：研究由混合电镀污泥硫酸浸出液选择性分离回收铬的方法.浸出液经萃取提铜后,应用磷酸沉淀方法实现铬与铁、镍、锌的选择性分离.实验证明,该方法稳定有效,能够达到选择性沉淀铬的目的,沉淀后液中铬的浓度可降至0.04 g/L左右.沉铬渣含铬约13%,镍、铁、锌等杂质含量可分别降至0.4%、0.1%和0.2%左右.由磷酸铬渣可进一步综合回收铬并制取铬的经济产品.The recovery of Cr from the sulphurie acid leaching solutions of mixed electroplating sludge （MES） is studied. After the removal of Cu by solvent extraction, the selective phosphate precipitation is applied for the separation of Cr from Fe, Ni and Zn in the MES leaching solutions. The experimental results show that the precipitation of Cr can be carried out stably and effectively and the concentration of Cr in the solutions can be lowered down to about 0.04 g/L. Cr is efficiently enriched in the precipitates which contain 13% of Cr, 0.4 % of Ni, 0.1% of Fe and 0.2 % of Zn,respeetively,and could be further recovered as economic products.

关 键 词：电镀污泥 铬铁分离 磷酸沉淀 铬回收 

分 类 号：TF803.23[冶金工程—有色金属冶金] TF111.31