摘要
某金矿采用堆浸工艺,金的浸出率一直较低,改用全泥氰化浸出工艺进行试验,金的浸出率也没有明显的提高。为此,对该矿矿石进行了工艺矿物学研究,查明了影响金浸出的主要因素为雄黄、雌黄等。根据工艺矿物学研究结果,采用原矿先经浮选除去雄黄、雌黄等硫化物,浮选精矿预处理后氰化浸出,浮选尾矿直接氰化浸出的方案进行试验,金的总浸出率达到88.52%,较原矿直接全泥氰化浸出提高25.02个百分点。
A gold mine adopted a heap leaching process but the gold leaching rate had been low. No evident improvement was made when a full-ore cyaniding leading process was tested. A process mineralogical study was thus made and it was founded that it is mainly realgar and orpiment that affect the gold leaching. Based on this result, a test was made, in which the run-of-mine ore was first treated by flotation to remove the sulfides such as realgar and orpiment, and the flotation concentrate was treated by cyaniding leaching after a pre-treatment while the flotation tailing was directly fed to cyaniding leaching. The total gold leaching rate reached 88.52% , an increase of 25.02 percentage points compared with that of direct cvaniding leaching of run-of-mine ore.
出处
《金属矿山》
CAS
北大核心
2008年第10期56-59,63,共5页
Metal Mine
关键词
金矿
工艺矿物学
雄黄
雌黄
浮选
氰化浸出
Gold ore, Process mineralogy, Realgar, Orpiment
flotation, Cyaniding leaching
作者简介
杨磊（1964-），男，中国地质科学院矿产综合利用研究所，高级工程师，610041四川省成都市二环路南三段5号。
