从湿法炼锌渣中回收锌和铟试验研究  

Recovery of Zinc and Indium From Zinc Leaching Residue

作　　者：刘一宁 刘文德 彭瑛[3] 刘建华[3] 肖利[3] 

机构地区：[1]铅锌联合冶金湖南省重点实验室,湖南株洲412004 [2]株洲冶炼集团股份有限公司,湖南株洲412004 [3]湖南工业大学冶金工程学院,湖南株洲412007

出　　处：《湿法冶金》2015年第1期50-54,共5页Hydrometallurgy of China

基　　金：国家高技术研究发展计划(863计划)项目(2011AA061003);湖南省自然科学基金资助项目(2015jj5016)

摘　　要：研究了从高铁锌焙砂湿法炼锌渣中综合回收锌和铟,考察了反酸中浸时,浸出温度、体系终点pH和浸出时间对锌浸出率的影响,通过3段净化去除中浸上清液中的铜、镉、钴,再用P204萃取分离铟、铁。结果表明:工艺流程形成闭路循环,不污染环境;最佳条件下,锌、铟回收率分别为92%和86%。Comprehensive recovery of zinc and indium from a zinc leaching residue was studied.The leaching rate of zinc can reach 79%-81% by anti-acid neutral leaching.The influence of leaching temperature,terminal pH and leaching time on the leaching rate of zinc and indium were investigated.By three-stages purification process,copper,cadmium and cobalt in the supernatant of neutral leaching are removed,and the indium and iron is separated using P204 as extraction agent.The result show that the whole process forms closed cycle,no pollution for the environment.The total recovery rate of zinc and indium can reach 92% and 86%,respectively.

关 键 词：高铁锌焙砂 反酸中浸 铟 锌 综合回收 

分 类 号：TF813[冶金工程—有色金属冶金] TF843.1