六棱柱磨矿介质在黑钨矿选矿试验中的应用  

Application of Hexagonal Prism as Grinding Medium in Mineral Processing Experiment of Wolframite

作　　者：赵汝全[1] 李献帅[1] 李琳[1] 吴彩斌[1] 石贵明[1] ZHAO Ruquan LI Xianshuai LI Lin WU Caibin SHI Guiming(Jiangxi Key Laboratory of Mining Engineering,Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China)

机构地区：[1]江西理工大学江西省矿业工程重点实验室,江西赣州341000

出　　处：《黄金科学技术》2016年第6期107-111,共5页Gold Science and Technology

基　　金：江西省教育厅课题"矽卡岩钨矿泥化行为规律及选择性磨矿调控机理研究"(编号:GJJ150651);江西理工大学校级重点课题"SAB工艺中半自磨机和球磨机的功率计算方法研究"(编号:NSFJ2015-K02)联合资助

摘　　要：广东某铅锌矿中有价元素主要为W、Pb和Zn,其质量分数依次为1.32%、1.77%和1.87%,伴生银。钨矿物主要以黑钨矿形式存在,少量为白钨矿和钨华。其中,黑钨矿性脆,在破碎磨矿过程中易产生过粉碎现象,而现有的选矿技术难以回收细颗粒钨矿,导致其损失率增加。不同磨矿介质对矿物解离和磨矿效果具有重要影响,通过对不同磨矿介质和磨矿产品进行粒度分析,并分别开展分选试验,发现六棱柱磨矿介质对细颗粒矿物具有较好的选择性,有助于减少难选粒级的产生。广东某含钨铅锌矿采用六棱柱磨矿—摇床粗选—溢流产品悬振分选获得粗精矿含钨15.41%、铅16.21%、锌17.03%、银167.92×10-6,钨、铅、锌、银的回收率分别为81.31%、63.97%、63.63%和46.46%,摇床尾矿中钨、铅、锌、银的损失率分别为8.08%、12.89%、17.16%和22.80%,达到了资源综合利用的目的。通过引入新型的六棱柱磨矿介质,使得广东某铅锌矿的选矿技术指标得到很大提升,取得了显著成效。The major valuable elements of a certain lead-zinc mine in Guangdong Province are tungsten, lead andzinc, containing 1.32% of tungsten, 1.77% of lead, 1.87% of zinc, and accompanying with silver.Tungsten mineralcontent exists mainly in the form of wolframite, and a small amount in the form of scheelite and tungstite.Amongthem, the wolframite is brittle, which would cause a over crushing phenomenon in crushing and grinding process.However, the existing beneficiation technology is difficult to recover fine practical tungsten, so lead to the lossrate of tungsten increased.Different grinding media have a significant influence on mineral dissociation andgrinding efficiency.Particle size analysises to grinding products of different grinding media were done in thispaper, and separation experiments were carried out respectively, which indicated that hexagonal prism as grindingmedium had good selective effect on fine mineral particles and thus reduced the production of refractory sizefraction.With hexagonal prism as grinding medium, technological process of grinding with hexagonal prisms-tableseparation-suspension vibration sorting to over flow products was employed to tungstenic lead-zinc mine inGuangdong Province and rough concentrate was obtained containing 15.41% of tungsten, 16.21% of lead, 17.03 %of zinc and 167.92 x10^6 of silver.Meanwhile,recovery rates of tungsten,lead,zinc and silver were 81.31%,63,97%, 63.63% and 46.46%, respectively, and loss rates of tungsten, lead, zinc and silver in shaking table tailingswere 8.08%, 12.89%, 17.16% and 22.80%,respectively, achieving the goal of comprehensive utilization of resources.By introducing a new type of grinding medium hexagonal prism,the index of a certain lead-zinc mine inGuangdong Province dramatically improved, has made remarkable achievements.

关 键 词：含钨铅锌矿 磨矿介质 摇床分选 六棱柱 综合利用 

分 类 号：TD954[矿业工程—选矿]