嵩县南沟金矿的矿物特性及金的可浸性研究

摘要:介绍了嵩县南沟金矿的工艺矿物学研究和矿石可浸性试验的成果。通过化学分析、电子探针等分析手段查清了原矿化学物质组成、矿物物质组成、矿物相对含量金的赋存状态及嵌布粒度特征:该矿石属于凝灰质砂岩、粉砂岩型金矿；金多赋存于褐铁矿中，其次是赋存在毒砂及黄铁矿中，矿石石质疏松，裂隙发育。矿石中的金主要为自然金，金的成色高，绝大部分为可见金，而且主要呈裂隙金嵌布，主要载金矿物为氧化矿物，适于用氰化法处理。在原矿金的平均品位为2.39~4.14g/t时，可得到的尾渣平均品位0.31~0.26g/t，金的浸出率为87.03~93.72%的较好指标。 

Research on mineralogical characteristics of Nangou gold ore and leachability of gold

The research of technological mineralogy of the gold ore in Nangou Songxian and the achievements of leachability were introduced.By chemical analysis and electron microprobe analysis,the chemical composition,mineral composition,and mineral content,occurrence of gold and disseminated particle-size characteristics were found out.It belongs to tuffaceous sandstone,siltstone type gold ore.Most of the gold occurs in limonite and then in arsenopyrite and pyrite.The gold in ore mainly exists in the form of natural and visible gold,mainly disseminating in the form of fracture gold and being carried by oxide minerals,which makes it treated by cyanidation.When the gold grade of the raw ore is 2.39～4.14g/t,the average gold grade of 0.31～0.26g/t in the tailings can be obtained.The good index of 87.03～93.72% is obtained.