镍钼矿中氧化镍和氟磷灰石浮选分离研究及应用  

Research and Application of Flotation Separation of Nickel Oxide and Fluorapatite in Ni-Mo Ore

作　　者：刘建东[1] 孙伟[2] 刘润清[2] 史文革[1] 胡鄂明[1] 李会娟[1] 李乾[1] LIU Jian-dong;SUN Wei;LIU Run-qing;SHI Wen-ge;HU E-ruing;LI Hui-juan;LI Qian(School of Nuclear Resource Engineering,University of South China,Hengyang 421001,Hunan,China;School of Minerals Processing and Bioengineering,Central South University,Changsha,410083,Hunan,China)

机构地区：[1]南华大学核资源工程学院,湖南衡阳421001 [2]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《矿冶工程》2018年第5期36-39,43,共5页Mining and Metallurgical Engineering

基　　金：湖南省自然科学青年基金(2018JJ3446);湖南省教育厅一般项目(17C1374);衡阳市科学技术发展计划项目(2015KS08)

摘　　要：为了提高镍钼矿中镍矿物浮选回收率,对其进行了浮选分离试验研究。分子动力学模拟结果表明,十六烷基吡啶在氧化镍表面的吸附能为-443.04 kJ/mol,小于在氟磷灰石表面的吸附能(-420.16 kJ/mol),可作为氧化镍和氟磷灰石浮选分离的捕收剂。酒石酸与Ca^(2+)形成络合物,络合物附着于氟磷灰石表面,影响捕收剂与氟磷灰石接触,可以作为浮选抑制剂。该镍钼矿石镍含量4.52%,经浮选可以得到镍回收率89.06%、尾矿中镍含量低至0.71%的良好指标。Flotation tests were carried out to improve the reeovery of nickel minerals from a Ni-Mo ore. According to molecular dynamics simulations, the adsorption energy of eetylpyridinium chlorides （CPC） on nickel oxide is -443.04 k J/tool, smaller than its adsorption energy on fluorapatite, which is -420.16 kJ/mol. This indicates that CPC can be used as collector in flotation separation of nickel oxide and fluorapatite. Tartaric acid can be used as a depressant as it can form complex with Ca2＋ ions, which can be attached onto fluorapatite and hinder the adsorption of collector thereon. This raw Ni-Mo ore with Ni content of 4.52% was subjected to flotation, resulting in Ni recovery at 89.06% and the Ni content in the tailings reduced to 0.71%.

关 键 词：镍钼矿 氧化镍 氟磷灰石 分子动力学模拟 浮选 

分 类 号：TD923[矿业工程—选矿]