铟电解精炼中异常行为的研究  

Abnormal Behavior in Electrorefining of Indium

作　　者：周智华[1] 曾冬铭[2] 莫红兵[2] 

机构地区：[1]湘潭工学院化工系,湖南湘潭411201 [2]中南大学化学化工学院,湖南长沙410083

出　　处：《稀有金属》2002年第6期452-455,共4页Chinese Journal of Rare Metals

基　　金："九五"科技攻关资助项目

摘　　要：探索了铟电解精炼中电解液酸度的异常变化和阳极铟的异常行为 ,研究表明 :在阴极和阳极室 ,溶液的pH值分别增大和下降 ;电解液在纯化过程中出现乳化现象 ;阳极铟在溶解时有少量以In+的形式进入溶液 ,发生歧化反应生成海绵铟。提出了通过加入NaOH来控制电解液酸度 。Abnormal variation of electrolyte acidity and abnormal behavior of indium on anode during electrorefining were investigated. pH of electrolyte increases in cathode region but decreases in anode region, and electrolyte acidity could be controlled between 2 and 3,by adding sulfuric acid or sodium hydroxide. A protion of indium enters electrolytic solution it the form of indium ion, and a little In + disproportionates into sponge indium and deposits as anode slime. Emulsification can be prevented or eliminated by adding sulfuric acid.

关 键 词：电解精炼 异常行为 炼铟 

分 类 号：TF843.1[冶金工程—有色金属冶金]