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一、前言锌粉置换金、银,是从含金氰化液中提取金银的主要方法.应用金属锌置换金银,最先是采用锌板,后来改用锌丝,1897年又开始应用锌粉.到1932年才形成现在的连续净化、脱氧置换法.目前国外普遍应用此法从氰化液中提金.锌粉置换与锌丝置换比较,有以下优点:锌粉置换速度快、时间短、价格便宜,便于实现自动化操作,有利于改善劳动条件,金泥含金品位较高,为提高冶炼回收率、降低冶炼成本创造了有利条件.
First, the preface Zinc powder replacement gold, silver, is the main method of gold and silver from gold cyanide solution. Application of metal zinc replacement gold and silver, the first is the use of zinc plate, and later switch to zinc wire, 1897 and began to use zinc Powder to 1932 to form the current continuous purification, deoxidation replacement method now widely used this method from the cyanide solution gold extraction.Zinc powder replacement and zinc wire replacement, has the following advantages: zinc powder replacement speed, time Short, cheap, easy to achieve automation, help to improve working conditions, high gold grade gold mud, to improve smelting recovery, reduce the cost of smelting and create favorable conditions.