堆浸氰化液中金、银的综合回收

• 作 者: 王本仪 唐苏英 丁桐森
• 机 构: 铀矿开采研究所,铀矿开采研究所,铀矿开采研究所 湖南421001,湖南421001,湖南421001
• 出 处: 铀矿冶
• 发表日期: 1993年04期
• 关键词: 堆浸 堆浸氰化液 沉淀银 活性炭吸附法 金泥 质银 回收金 解吸率 醇溶液 活性炭吸附

本文研究了用活性炭吸附法从堆浸氰化液中回收金、银的工艺流程。采用三段串联柱吸附,金、银吸附效果良好。负载炭用碱性醇溶液解吸,可使贫炭含金低于0.06g/kg,含银低于0.10g/kg,金、银的解吸率均达98％以上。解吸贵液通过电解,使金和银沉积到钢棉上,电沉积率99％左右。用硝酸溶解钢棉上的银,从而实现金银分离。金泥熔炼得合质金,用氯化钠沉淀银,再经还原熔炼得合质银。

In this paper, the process of gold and silver recovery from heap leaching cyanide by activated carbon adsorption was studied. Adopt three series of tandem column adsorption, gold, silver adsorption effect is good. Charcoal desorption with alkaline alcohol solution, can make the poor carbon content less than 0.06g / kg, containing less than 0.10g / kg of silver, gold, silver desorption rate reached 98% or more. Desorption of your solution through electrolysis, gold and silver deposited on the steel wool, electrodeposition rate of about 99%. Use nitric acid to dissolve the silver on the steel wool to achieve gold and silver separation. Gold mud smelting gold, sodium chloride precipitation of silver, and then reduced to smelting quality silver.