摘要
研究了在铟生产中的置换过程和电解精炼过程中的酸度对锌含量的影响,以及锌含量的控制。在置换过程中,当酸含量控制在15～25g/L时,能控制反应的速度,从而降低粗铟中锌的含量;在电解精炼中,溶液的pH值为2～3,可使铟中锌的含量降低至0 5μg/g,并提出了采用硫酸或氢氧化钠来控制溶液酸度的方法;用海绵铟熔铸阳极时,采用NaOH熔炼的同时,加入NaCl能降低碱性熔渣的黏度,提高NaOH对Zn(OH)2、Na2ZnO2等的吸收能力,降低铟中锌的含量。
The thesis investigated the effect of acidity on zinc level and control of zinc level in the process of substitution and refining indium.Acidity was controlled between 15～25g/L in the process of substitution,which could control the speed of reaction,thus reducing the level of zinc.The pH of electrolyte was 2～3 in refining indium,which could reduce the level of zinc in refined indium to 0.5μg/g.In the thesis,a method for control of acidity by adding sulfuric acid or sodium hydroxide was given.With this method,the elastic-viscous degree of alkali fusion mud would be reduced by adding chlorinated soda into melting indium,and sodium hydroxide for improving absorbability of zinc hydroxide and sodium zincate into sodium hydroxide,thus lowering the level of zinc in refined indium.
出处
《矿冶》
CAS
2004年第2期57-60,共4页
Mining And Metallurgy
基金
国家"九五"科技攻关资助项目
关键词
铟的生产
酸度
锌含量
高纯铟
Refining indium
Acidity
Zinc level
High-purity indium
