EPE型双亲嵌段共聚物强化油酸钠浮选分离萤石与微细粒石英  

Improvement of Flotation Separation of Fluorite and Fine Quartz by Sodium Oleate with Nonionic-like Amphiphilic Triblock Copolymers

作　　者：秦煦坤 钱玉鹏[1,2] 邱玄 陈彬 胡善海 Qin Xukun;Qian Yupeng;Qiu Xuan;Chen Bin;Hu Shanhai(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei 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学院,湖北武汉430070 [2]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》2019年第5期88-92,共5页Metal Mine

基　　金：国家自然科学基金青年科学基金项目(编号:51504173);国家级大学生创新创业训练计划项目(编号:20171049708012)

摘　　要：通过对萤石和微细粒石英进行纯矿物浮选试验、人工混合矿浮选试验、Zeta电位分析、红外光谱分析及油酸钠吸附量测定,系统地研究了在油酸钠浮选体系中EPE型双亲嵌段共聚物F-127对微细粒石英和萤石的人工混合矿浮选速率的影响。结果表明:油酸钠对萤石具有良很好的捕收效果,对石英无捕收效果;F-127具有一定的起泡功能,因而能显著加快萤石纯矿物的上浮;微细粒石英易与粗粒萤石发生异相凝聚,F-127通过改善矿浆的分散程度,可促进微细粒石英从粗粒萤石表面解吸下来,从而改善萤石与石英的浮选分离效果。The effect of nonionic-like amphiphilic triblock copolymers F-127 on the fine quartz and fluorite flotation rate in sodium oleate flotation system was systematically investigated by the single fluorite and quartz and mixture flotation test,Zeta potential analysis,infrared spectrum analysis and sodium oleate absorption test.The results indicated that the sodium oleate has good collecting effect on fluorite and no collecting effect on quartz;F-127 has certain foaming function,therefore,the floatation of pure fluorite minerals can be greatly accelerated;A hetero-coagulation is generated in fine quartz and coarse fluorite, F-127 can improve the dispersion of fluorite-quartz ore and it can promote desorption of fine quartz from the surface of coarse fluorite.Thus,the flotation separation of fluorite and fine quartz can be improved.

关 键 词：萤石 石英 浮选速率 异相凝聚 EPE型双亲嵌段共聚物 

分 类 号：TD923.1[矿业工程—选矿]