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湿法炼铜浸出渣中的金、银等贵金属难于回收,是湿法炼铜工艺的不足之一.本文主要依据我们的试验实践及兄弟单位的经验,对从湿法炼铜浸出渣中回收黄金所遇到的一些问题,进行初步的分析.我们认为:用浮选一重选流程将渣中的金预先富集,所得的金精矿进一步用氰化法提取黄金,这一回收工艺在技术上是可行的,经济上是合理的.用此法从含金6克/吨的浸出渣中提金,每产一两黄金预计可盈利340多元.
Wet-process copper leaching residue of gold, silver and other precious metals is difficult to recover, is one of the inadequacies of wet-process copper smelting process.This paper mainly based on our experimental practice and brother’s experience, from wet-process copper leaching residue recovery Gold encountered some of the problems, a preliminary analysis.We believe that: the flotation of a re-election process will be the gold in the slag pre-enrichment, the resulting gold concentrate further cyanide extraction of gold, the recovery process in technology Is feasible and economically justified.Using this method to extract gold from 6g / t leaching residue, it is estimated that one or two gold will produce profit of 340 yuan.