从高酸湿法炼锌渣浸出液中分离铁及回收铜、锌试验研究  

Test Research on Separate of Iron and Recovery of Copper,Zinc From A Acidic Leaching Solution of Zinc Hydrometallurgy Slag

作　　者：李志仁[1] 许万祥[1] 朱军[1] 马莹[1] 刘欢[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《湿法冶金》2013年第5期326-328,共3页Hydrometallurgy of China

摘　　要：某湿法炼锌厂浸出锌过程中产出的浸出渣中含有银、铁、锌、铜等有价金属,采用酸浸—浮选联合工艺回收银后的溶液中,Cu、Zn、Fe质量浓度分别为1.0、11.05和91.56g/L,硫酸质量浓度约为155g/L。研究了用双极膜电渗析法将残酸质量浓度降到30g/L以下,同时回收酸;脱酸后的浸出液用黄钠铁矾法和中和水解法除铁及硫化法沉锌和铜。最终铁去除率达96.32%,获得品位为19.71%的铜精矿和品位为40.40%的锌精矿。The zinc leaching residue produced in the process of zinc hydrometallurgy contains silver, ferrum,zinc,copper and other valuable metals. There are Cu （1.00 g/L） ,Zn （11.05 g/L） ,Fe （91.56 g/L） and sulfate acid （155 g/L） in the solution after silver iss recovered by acid leaching--flotation process. By bipolar membrane electrodialysis process, the residual acid in the solution was reduced to below 30 g/L. Iron in the deacidification liquor was removed by jarosite and neutralizing hydrolysis process,then zinc and copper were recovered by sulfurization-precipitation method. Removal rate of iron reaches 96.32%,copper concentrate grading 19.71% and zinc concentrate grading 40. 40% were obtained.

关 键 词：湿法炼锌 浸出渣 双极膜 硫化沉淀 有价金属 分离 回收 

分 类 号：TF803.21[冶金工程—有色金属冶金] TF803.25