贵州某金矿硫代硫酸盐法浸金工艺研究

Study on Thiosulfate Leaching of Gold from a Gold Mine in Guizhou

针对贵州安龙某金矿山矿样特点进行了硫代硫酸盐法浸金工艺研究,考察了硫代硫酸钠浸金体系中各个因素对浸金效果的影响,结果显示,在硫代硫酸钠浓度为0.7 mol/L,氨浓度1.2mol/L,pH值为10,浸出时间为5h,浸出温度为45℃的此条件下,金浸出率达到90%以上.

According to the characteristics of a gold mine in Anlong, Guizhou Province, non-cyanide leaching process was studied. The effects of various factors on gold leaching efficiency in thiosulfate leaching system were investigated. The results showed that when thiosulfate concentration is 0.7 mol/L, ammonia concentration is 1.2 mol/L, pH value is 10, leaching time is 5h and leaching temperature is 45℃, gold leaching rate can reach more than 90%.