氯盐体系中锌焙砂中浸渣高温高酸还原浸出研究  

Study On Reductive Leaching of Neutral Leached Residue in Chloride System by High Concentration Acid and Reductive Agent at High Temperature

作　　者：李诚国[1] 唐谟堂[1] 唐朝波[1] 杨声海[1] 李鸿飞[1] 巨少华[1] 陈永明[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《湿法冶金》2005年第4期203-207,共5页Hydrometallurgy of China

基　　金：国家863计划---硫化锌精矿中铁源的高值化利用湿法炼锌提铟新技术研究与开发(2004AA649080)

摘　　要：提出了一种从高铟锌焙砂中浸渣中回收铟和铁的新工艺,对该工艺的关键工序———盐酸高温浸出和还原浸出进行了系统研究。结果表明,在高酸浸出优化条件下,锌、铁、铟的浸出率分别为98.98%,92.17%和99.30%;在还原浸出优化条件下,锌、铁、铟的浸出率及三价铁还原率分别为93.2%,97.19%,98.07%和98.67%。该工艺具有资源利用率高、锌铁易分离、易提纯等特点。A new process of treating neutral leached residue of zinc calcine to recovery indium and iron was proposed. Its key process that the neutral leached residue is leached with high concentration hydrochloric acid and reductive agent at high tempetature, was systemly investigated. The reaults show that, under the optimizing condition, the leaching rate of zinc, iron, and indium is 98.98%, 92.17% and 99.30% ,respectively in high acid leaching, but that is, respectively, 93.2% ,97.19%, 98.07 %, and reducing rate of ferric is 98.67% in reductive leaching. This process has the advantages of high resource utilization ratio and easy to separate and purify the zinc and iron.

关 键 词：锌焙砂 中浸渣 盐酸浸出 还原浸出 铟 锌 

分 类 号：TF813[冶金工程—有色金属冶金]