新疆某尾矿中重晶石的回收试验  

Experimental Study on Recovery Process of Barite from a Tailing in Xinjiang

作　　者：钱新宇 钱玉鹏[1,2,3] 李旻阳 QIAN Xinyu;QIAN Yupeng;LI Minyang(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;Key Laboratory of Green Utilization of Key Non-metallic Mineral Resources of the Ministry of Education,Wuhan 430070,China;Hubei Provincial Key Laboratory of Mineral Resources Processing and Environment,Wuhan 430070,China)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]关键非金属矿产资源绿色利用教育部重点实验室,湖北武汉430070 [3]矿物资源加工与环境湖北省重点实验室,湖北武汉430070

出　　处：《金属矿山》2024年第5期264-268,共5页Metal Mine

基　　金：湖北省自然科学基金项目(编号:20221j0077);国家大学生创新创业训练项目(编号:202210497102)。

摘　　要：为高效回收新疆某尾矿中的重晶石,在进行了试样性质分析的基础上,采用重—磁联合工艺开展了详细的选矿试验研究。结果表明,①试样的BaSO_(4)品位为34.85%,主要脉石矿物为方解石、石英、长石及赤褐铁矿等;BaSO_(4)主要富集于-200μm粒级。②试样在筛出+200μm粒级的情况下,200~74μm粒级采用细砂摇床1粗1精重选流程处理,-74μm粒级采用矿泥摇床粗选+中矿再选闭路流程处理,重选精矿采用1次弱磁选+1次高梯度强磁选流程除铁,最终获得BaSO_(4)品位为90.65%、回收率为71.35%的重晶石精矿,精矿达到了化工用重晶石一等品品质要求,可实现该尾矿资源的综合利用。In order to recover barite efficiently from a tailings in Xinjiang,a detailed beneficiation experiment was carried out by using the gravity and magnetic combined process based on analysis of the characteristics of the sample.The results showed that①the grade of BaSO_(4) in the sample is 34.85%,and the main gangue minerals are calcite,quartz,feldspar and erythrolimonite.BaSO_(4) is mainly enriched in-200μm particle size.②When the particle size of sample above 200μm is screened for discarding,200~74μm particle grade sample is treated by fine sand shaker with one roughing and one cleaning gravity separation process,-74μm particle grade sampls is treated by slime shaker with rough separation+medium ore re-separation closed circuit process,and the gravity concentrate is treated by one low intensity magnetic separation+one high gradient strong magnetic separation process for iron removal.Barite concentrate with BaSO_(4) grade of 90.65% and recovery rate of 71.35% was obtained.The concentrate met the first-class quality requirements of barite for chemical industry,which could realize the comprehensive utilization of the tailings resources.

关 键 词：重晶石 重选 磁选 尾矿资源 

分 类 号：TD926[矿业工程—选矿] TD97