某高砷微细粒难处理金矿石选冶试验研究  

Experimental study on dressing and smelting of a refractory gold ore with high arsenic content and microfine grains

作　　者：汪勇[1] 姜亚雄 郑仁军 刘志斌[1] 高起方 庄世明 王德毛 Wang Yong;Jiang Yaxiong;Zheng Renjun;Liu Zhibin;Gao Qifang;Zhuang Shiming;Wang Demao(Yunnan Gold Mining Group Co.,Ltd.;Heqing Beiya Mining Co.,Ltd.)

机构地区：[1]云南黄金矿业集团股份有限公司 [2]鹤庆北衙矿业有限公司

出　　处：《黄金》2022年第7期60-66,共7页Gold

基　　金：云南省对外科技合作计划-省院省校科技合作项目(2015IB002,2018IB028)。

摘　　要：某金矿石含砷、含碳,且金嵌布粒度细,部分包裹于黄铁矿、毒砂、脉石矿物中,属于典型的难处理金矿石。针对该矿石性质,开展了原矿浮选—浮选尾矿氰化浸出—金精矿焙烧—焙砂氰化浸出选冶试验研究,并详细考察了磨矿细度、pH调整剂、捕收剂等对选别指标的影响。结果表明:在最佳条件下,采用原矿浮选—浮选尾矿氰化浸出—金精矿焙烧—焙砂氰化浸出工艺,金总回收率为73.03%。研究结果可为含砷金矿资源的开发利用提供借鉴。A gold ore contains arsenic and carbon with fine embedding grains.Part of the gold is encased in pyrite,arsenopyrite and gangue minerals.The gold ore belongs to typical refractory gold ores.According to the ore properties,the experimental study of flotation of run-of-mine ore-cyanidation of flotation tailings-gold concentrate roasting-roasting slag cyanidation was carried out,which thoroughly looked into the effect of grinding fineness,pH modifier and collector on ore-dressing index.The results show that the total gold recovery rate is 73.03%when flotation of run-of-mine ore-cyanidation of flotation tailings-gold concentrate roasting-roasting slag cyanidation process is used,which provides a foundation for the development and utilization of arsenic-bearing gold resources.

关 键 词：难处理金矿石 微细粒 高砷 浮选 焙烧 氰化 黄铁矿 

分 类 号：TD953[矿业工程—选矿]