摘要
吉林某含铜金矿含铜11%～13%,含金30～50g/t,由于金部分被黄铜矿等硫化物包裹,直接氰化浸出,金的浸出率只有48.9%。针对矿石性质,进行了硫代硫酸盐-氨水体系的浸金试验研究,重点考察了浸出时间、浸出液固比、硫代硫酸盐浓度和氨水浓度等因素对金浸出的影响。结果表明,在综合条件下浸出24h,金浸出率可达92%。为非氰浸金提供了一种新的思路和工艺,对类似的含铜金矿中金的回收有重要借鉴意义。后续还要加强对浸出液中金的回收研究。
Jilin copper-bearing gold mine contains 11% -13% copper,30 - 50g/t gold. Since the gold is partially wrapped by chalcopyrite and other sulfides, the gold leaching rate is only 48.9% by direct cyanide leaching. Directed at the ore properties, research on gold leaching by the thiosulfate - ammonia system was carried on, focusing on the influence of leaching time, liquid-solid ratio, thiosulfate concentration and ammonia concentration on the leaching rate. The results showed that the leaching rate could reach 92% by leaching for 24 hours under the synthesis condition. This paper provides new ideas and technology for non-cyanide leaching. Meanwhile, it gives important reference to this kind of ore. Of course, the research on the recovery of gold in the leaching liquid should be enhanced.
出处
《矿产综合利用》
CAS
2012年第4期35-38,共4页
Multipurpose Utilization of Mineral Resources
关键词
硫代硫酸盐
浸出
含铜金矿
Thiosulfate leaching
Gold
Copper-bearing gold ore
