某金矿石工艺矿物学研究

Study on the process mineralogy of a gold ore

针对某金矿石样品,利用BPMA型工艺矿物学参数自动分析系统,对矿石的化学成分、矿物组成,金矿物嵌布特征、解离度等影响金回收的矿物学因素进行了系统的工艺矿物学研究。结果表明:矿石中金属矿物主要有黄铁矿、黄铜矿、方铅矿、闪锌矿等;脉石矿物主要有石英、绢云母、长石等;金矿物主要以自然金和银金矿形式存在,粒度以粗粒金为主,嵌布状态以单体金为主。研究结果对矿石分选工艺流程的制定具有指导意义。

In this paper,the chemical composition and mineral composition of a gold ore sample,dissemination characteristics and dissociation degree of a gold ore are studied by means of BPMA process mineralogy parameter automatic analysis system,and the mineralogical factors affecting gold recovery are systematically analyzed.The results show that metal minerals in the ore are mainly pyrite,chalcopyrite,galena,sphalerite and so on;the gangue minerals are mainly quartz,sericite,feldspar and so on;gold in ores mainly exists in the form of native gold and electrum,most of them are coarse-grained gold and gold mainly occurs as elemental gold.The research results have guiding significance for the formulation of ore separation process.