某金矿赋存状态及开发利用工艺研究  

The Occurrence State of Polysulfide Micro-disseminated Gold Deposits and Technical Study on its Development and Utilization

作　　者：汪勇[1] 李其在 郑仁军 庄世明 王德毛 WANG Yong;LI Qi-zai;ZHENG Ren-jun;ZHUANG Shi-ming;WANG De-mao(Yunnan Gold&Mineral Group Co.,Ltd.,Kunming,Yunnan 650200,China;Heqing Beiya Mining Co.,Ltd.,Dali,Yunnan 671507,China)

机构地区：[1]云南黄金矿业集团股份有限公司,云南昆明650200 [2]鹤庆北衙矿业有限公司,云南大理671507

出　　处：《云南冶金》2022年第6期50-56,共7页Yunnan Metallurgy

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：某金矿石中金存在37.00%不可见金赋存在含砷黄铁矿、毒砂之中,金以晶格金的形式进入含砷黄铁矿、毒砂的结构,毒砂与黄铁矿连生、微细粒毒砂被黄铁矿包裹。属于难处理多硫化物微细粒浸染型含金矿石。针对该矿石性质,开展了原矿细磨全泥氰化浸出工艺、原矿浮选-金精矿焙烧氰化-浮选尾矿氰化浸出工艺、原矿焙烧-混合砂氰化浸出工艺的选冶试验研究,结果表明:在最佳条件下,采用:“原矿焙烧-混合砂氰化浸出”工艺,金回收率为70.26%。研究结果为该资源的开发利用提供基础。Gold content in one gold ore is 37.00%, there’s no gold contains in arsenian pyrites and arsenopyrite;gold were existed in structure of arsenian pyrite and arsenopyrite in form of lattice gold;arsenopyrite and pyrite was intergrowth relationship, fine grain arsenopyrite was coated by pyrite. It belongs to polysulfide micro-disseminated gold ore. For the ore properties, we did the following experimental studies, fine grinding of raw ore-full mud cyanide leaching process, flotation of raw ore-gold concentrate roasting and cyaniding-cyanide leaching process of flotation tailings, roasting of raw ore-cyanide leaching process of the mixed sand, tests results show: under the best conditions, the process " roasting of raw ore-cyanide leaching process of the mixed sand " were adopted, gold with recovery rate is 70.26% was got. The study results can provide basis to development and utilization of the resources.

关 键 词：晶格金 微细粒 浮选 焙烧 混合砂 氰化 

分 类 号：TD925[矿业工程—选矿]