江西金尾矿资源的性质与矿物学特征研究  

Properties and mineralogical characteristics of gold tailings resources in Jiangxi province

作　　者：罗立群 张晓雪 林永峰 贾旭峰 郑波涛 魏晨曦 LUO Liqun;ZHANG Xiaoxue;LIN Yongfeng;JIA Xufeng;ZHENG Botao;WEI Chenxi(Key Laboratory of Mineral Resources Processing and Environment in Hubei Province,School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;National Gold Group Jiangxi Jinshan Mining Co.,Ltd.,Dexing 334213,China)

机构地区：[1]武汉理工大学资源与环境工程学院矿物资源加工与环境湖北省重点实验室,湖北武汉430070 [2]中国黄金集团江西金山矿业有限公司,江西德兴334213

出　　处：《中国矿业》2020年第11期100-106,共7页China Mining Magazine

基　　金：国家自然科学基金项目资助(编号:51874219)。

摘　　要：黄金矿山选矿中95%以上为尾矿,实现金尾矿综合利用的前提是充分查明其性质与特征。针对江西某金尾矿,采用化学分析、ICP和γ能谱仪,查明了金尾矿的化学成分和放射性核素限量,利用岩矿鉴定、EMPA和EDS分析等手段,研究了该物料的资源性质与矿物学特征,分析了其综合利用前景。结果表明:该金尾矿中含金0.495 g/t,含银1.70 g/t,且金以铁等氧化矿物中包裹金存在,占比58.18%,显微镜下未发现残余的金颗粒。金尾矿中SiO2、Al2O3分别为62.21%和13.54%,残余的矿物主要为石英、绢云母和方解石,其中绢云母具有较好的回收前景。放射性核素限量合格,若制备建材制品产销与使用不受限制。该试样筛析-0.074 mm占41.58%,残余含金矿物的单体解离度不高,含金矿物多赋存在比重较高的重矿物或金属矿物中,仍有部分提金潜力。绢云母多为细粒级产出,片径为0.01~0.20 mm,提取时需加强分级和细粒易泥化物的分散,防止影响其品质。More than 95%of the products are tailings in the process of gold mine beneficiation.The prerequisite for the comprehensive utilization of gold tailings is detailly ascertaining the properties and characteristics of its tailings.The chemical composition and radionuclide limits of the gold tailing obtained from Jiangxi province are determined by chemical analysis,ICP and gamma ray spectrometer.The resource properties and mineralogical characteristics of the gold tailings are studied by mineralogical identification,EMPA and EDS analysis,and its comprehensive utilization prospect is analyzed.The results show that the gold tailings contain 0.495 g/t of gold and 1.70 g/t of silver,and 58.18%of the gold is inclusion gold together with iron and other oxide minerals.No residual gold particles are found under the microscope.There are 62.21%SiO2 and 13.54%Al2O3 in the gold tailings,and quartz,sericite and calcite are the main minerals,among which sericite has recovery value.The gold tailing can be used to produce building materials owning to the qualified radionuclide limit.As sieve analysis-0.074 mm to the sample accounted for 41.58%,the monomer dissociation degree of the residual gold-bearing minerals is not high,which may be caused by the distribution of gold in heavy minerals or metal minerals.Therefore,there is still some potential for gold extraction.In order to obtain the qualified product of the sericite,it is necessary to strengthen the classification and the dispersion due to its flake diameter of 0.01-0.20 mm.

关 键 词：金尾矿 资源性质 矿物学 资源化利用 

分 类 号：TD951[矿业工程—选矿] TD924