硫代硫酸盐从金精矿中提金新工艺的研究

New Technology to Extract Gold from Concentrate by Thiosulfate

采用硫代硫酸盐从朝阳地区金精矿中提出金银，金银浸出率可达９７％和４５％，浸出周期仅为常规氰化法的１／３，并研究了硫代硫酸锭浓度、添加剂、浸出温度、浸出时间、液固比、粒度等因素对浸出率的影响。

The technology of gold extraction from gold concen trate of Chao Yang District bythiosulfate leaching has been studied.In this way,the leaching rates of gold and silver can reach to97%and 45%respectively,and the leaching period is only 1/3 as long as the conventional cyanideprocess.The influencing factors, such as the concentration of ammonium thiosulfate ,additive agent,leaching temperature,leaching time,rate of liquid and solid,particle size etc. has been investigated.