赣南某钨锡矿重介质选矿工业试验研究  

Industrial Experimental Research on Heavy Medium Beneficiation for a Tungsten-tin Ore in Southern Jiangxi Province

作　　者：袁亚君 杨文龙 李振飞 练和信 沈新春 李秀珍 YUAN Yajun;YANG Wenlong;LI Zhenfei;LIAN Hexin;SHEN Xinchun;LI Xiuzhen(Ganzhou Nonferrous Metallurgy Research Institute Co.,Ltd.,Ganzhou 341000,Jiangxi,China;Piaotang Tungsten Industry Co.,Ltd.,Ganzhou 341515,Jiangxi,China)

机构地区：[1]赣州有色冶金研究所有限公司,江西赣州341000 [2]江西漂塘钨业有限公司,江西赣州341515

出　　处：《中国钨业》2024年第5期19-25,共7页China Tungsten Industry

基　　金：江西钨业控股集团科技计划项目(JXTC-23ZD-04)。

摘　　要：赣南某钨锡合格矿中钨矿物主要为黑钨矿,并含有少量白钨矿,锡矿物主要为锡石,脉石矿物主要为石英、云母和长石。针对该矿石性质特点,利用钨矿、锡石和脉石矿物之间的密度差,以硅铁粉作为重介质分选介质粉,采用无压三产品重介质旋流器分选系统开展了重介质选矿工业试验研究,并重点考察了分选效果和相关运行成本。工业试验研究结果表明,当处理量为11.74 t/h,重介液密度为1.55 g/cm^(3)时,可获得尾矿产率为55.96%,尾矿WO_(3)、Sn回收率分别为2.88%、4.52%的指标。以合格矿处理量为标准,电量、水量、介质粉消耗指标分别为4.90(kW·h)/t、3.84 m^(3)/t、99.94 g/t,分选效果较好。研究结果表明,采用重介质分选技术可实现预选抛废,减轻磨重负担和实现提产扩能,为重介质分选技术应用于钨矿预选提供了技术支撑。This study investigates the application of heavy medium separation technology for the pre-concentration of a tungsten-tin ore from southern Jiangxi,China.The ore primarily contains wolframite(with minor scheelite)as tungsten minerals,cassiterite as tin minerals,and quartz,mica,and feldspar as gangue minerals.Leveraging the density differences between valuable minerals and gangue,industrial-scale tests were conducted using a pressureless three-product heavy-medium cyclone system with ferrosilicon powder as the dense medium.The separation efficiency and operational costs were systematically evaluated under optimized parameters.Experimental results demonstrated that at a feed rate of 11.74 t/h with a dense medium density of 1.55 g/cm^(3),the process achieved 55.96%tailings yield while maintaining low WO_(3) and Sn loss rates of 2.88%and 4.52%,respectively.The operational consumption metrics per tonne of feed ore were quantified as 4.90(kW·h)/t for power,3.84 m^(3)/t for water,and 99.94 g/t for medium powder.The process demonstrated favorable separation performance with effective waste rejection during pre-concentration,significantly reducing grinding load while enhancing production capacity.This industrial validation provides crucial technical support for implementing heavy medium separation technology in tungsten ore processing,establishing an efficient pathway for resource utilization optimization in hard rock mineral beneficiation.

关 键 词：钨锡矿 重介质选矿 预选抛废 工业试验 

分 类 号：TD952[矿业工程—选矿]