某多硫化物金铜矿石工艺矿物学研究  

Process mineralogy of a polysulfide gold-copper ore

作　　者：刘朝辉 Liu Zhaohui(Pakrut Limited Company)

机构地区：[1]帕鲁特有限责任公司

出　　处：《黄金》2023年第8期66-69,共4页Gold

基　　金：国家重点研发计划项目(2022YFC2904500)。

摘　　要：针对某多硫化物金铜矿石,进行了详细的工艺矿物学研究,在此基础上开展了浮选试验,并且对金、铜流失状态进行考查。结果表明:金、铜和硫均为有价元素,金品位0.60 g/t,铜品位0.17%,含硫16.13%。铜矿物主要为黄铜矿,以细粒为主,单体解离度较高;金矿物主要为自然金,以微细粒金为主,硫化物包裹金占49.05%。采用重选—重尾混合浮选—混合精矿铜硫分离(三次精选)工艺,铜、金、硫的总回收率分别为91.70%、50.21%、90.93%,目的矿物回收效果良好,尾矿中流失的金、铜主要由于脉石矿物包裹,金、铜的流失特征符合工艺矿物学研究结果。A detailed process mineralogical study was conducted on a polysulfide gold-copper ore.Based on the study,flotation experiments were carried out,and the loss of gold and copper was investigated.The results showed that gold copper and sulfur are valuable elements,with gold grade of 0.60 g/t,copper grade of 0.17%,and sulfur content of 16.13%.The main copper mineral is chalcopyrite,predominantly in fine grains with high degree of monomer dissociation.The main gold mineral is native gold,predominantly in fine grains,with sulfide-encased gold accounting for 49.05%.The joint process of regrinding-gravity tailings bulk flotation-copper-sulfur separation from the bulk concentrate(three-stage cleaning)achieved total recovery rates of 91.70% for copper,50.21% for gold,and 90.93% for sulfur.The recovery effect of the target minerals was good,and the loss of gold and copper in the tailings was mainly due to inclusion in gangue minerals,consistent with the results of the process mineralogical study.

关 键 词：多硫化物 金 铜 工艺矿物学 赋存状态 联合工艺 

分 类 号：TD919[矿业工程—选矿] TD952