锌冶炼过程中铟的富集与回收技术研究进展

随着铟的应用越来越广泛,人类对铟的需求量日益增加,有效富集回收铟的技术也越受越受到重视。概述了铟的应用领域、资源状况、主要来源和铟在锌冶炼过程中的走向与分布,以湿法炼锌渣和火法炼锌渣及副产物为提铟原料分类介绍了铟的富集与回收技术并分析了不同技术方法的优缺点,阐明了铟富集与回收技术的发展现状,总结了高温挥发富集/浸出-萃取-置换-电解是目前铟富集与回收的成熟工艺,指出了浸出效果和萃取率是决定铟富集比和回收率的关键,富氧直浸技术的应用和新萃取剂的开发是未来富集回收铟的发展方向。

Research Progress of Technologies for Indium Recovery and Pre-concentration in Zinc Smelting

With the widespread application of indium,the demand of indium is rising and the efficient technologies for indium recovery and pre-concentration receive more and more attention.Through an overview of indium applications,resources,major sources and movement and distribution of indium in the zinc smelting process,the technology of indium enrichment and recovery were classifiedly introduced by using hydrometallurgical zinc slag,fire smelting slag and by-products as materials for indium extraction.Meanwhile,the advantages and disadvantages of different technologies were analyzed,stating the research progress of indium enrichment and recovery technologies,summarizing the mature technology of high temperature volatilization enrichment/leaching-solvent extraction-replacement-electrolyte for indium enrichment and recovery,pointing out the leaching effect and extraction rate are the key factors of indium enrichment and recovery and the application of the rich-oxygen direct leaching technology and the new extractant is the future development direction of indium enrichment.