锌浸出渣中银的回收方法综述

Review on the recovery methods of silver from zinc-leached residues

湿法炼锌是当今世界炼锌主要方法,生产中所得锌浸渣中含有较多的锌及其他有价金属(如银、铅、铜、镉、铟、锗等),作为尾矿堆存不仅会占用大量的土地资源,而且还会造成资源的严重浪费,加之锌浸出渣的长期堆存环境危害性高,因此对锌浸出渣中的有价金属进行综合回收具有十分重要的意义。本文结合国内外锌浸出渣的研究状况,重点针对锌浸出渣中银的回收现状进行论述,全面阐述锌浸出渣中银的工艺矿物学性质、提取工艺流程及发展趋势,对该类资源的综合回收利用具有十分重要的借鉴作用。

Hydrometallurgy is the main method of zinc smelting in the world today.The zinc-leached residues produced from zinc hydrometallurgy contain zinc as well as other valuable metals such as silver,lead,copper,cadmium,indium,germanium,etc.As a tailings storage,the residues not only occupy a large amount of land space,but also cause serious losses of valuable resources.In addition,the long-term storage is highly hazardous to the environment.Therefore,it is of great significance to comprehensively recover valuable metals from the zinc-leached residues.Based on the research status at home and abroad,a review was made on this aspect in the present paper,including the process mineralogical properties of the zinc-leached residues,extraction process and development trend.