溶解离子对白云石和氟磷灰石浮选及表面性质的影响研究  

Effect of Dissolved Ions on Flotation and Surface Properties of Dolomite and Fluorapatite

作　　者：高文鑫 李显波[1,2,3] GAO Wenxin;LI Xianbo(Mining College,Guizhou University,Guiyang 550025,Guizhou,China;National&Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas,Guizhou University,Guiyang 550025,Guizhou,China;Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources,Guizhou University,Guiyang 550025,Guizhou,China)

机构地区：[1]贵州大学矿业学院,贵州贵阳550025 [2]喀斯特地区优势矿产资源高效利用国家地方联合工程实验室,贵州贵阳550025 [3]贵州省非金属矿产资源综合利用重点实验室,贵州贵阳550025

出　　处：《矿冶工程》2023年第6期79-82,共4页Mining and Metallurgical Engineering

基　　金：贵州省科技计划项目(黔科合平台人才[2020]4105)。

摘　　要：采用纯矿物浮选、Zeta电位和接触角测试等方法研究了溶解离子Ca^(2+)、Mg^(2+)、SO_(4)^(2-)、PO_(4)^(3-)对白云石和氟磷灰石浮选及表面性质的影响。结果表明,溶解离子会明显改变白云石和氟磷灰石的可浮性、表面电性和表面润湿性。Ca^(2+)、Mg^(2+)、SO_(4)^(2-)、PO_(4)^(3-)会降低白云石和氟磷灰石的接触角,导致其疏水性减弱,使其上浮率降低。Ca^(2+)、Mg^(2+)会使白云石和氟磷灰石表面Zeta电位升高,SO_(4)^(2-)、PO_(4)^(3-)会降低矿物Zeta电位。研究可为下一步有针对性地去除磷矿浮选中有害离子提供参考。Effects of Ca^(2+),Mg^(2+),SO_(4)^(2-)and PO_(4)^(3-)on the flotation behavior and surface properties of dolomite and fluorapatite were studied by performing tests of pure mineral flotation,Zeta potential and contact angle.The results show that dissolved ions can significantly change the floatability,surface electricity property and surface wettability of these two minerals.Ca^(2+),Mg^(2+),SO_(4)^(2-)and PO_(4)^(3-)can reduce their contact angles,weaken their hydrophobicity and decrease the flotation recovery.Ca^(2+)and Mg^(2+)can increase,while SO_(4)^(2-)and PO_(4)^(3-)can decrease the Zeta potential of dolomite and fluorapatite.These results can be used as reference for removal of harmful ions in phosphorite ore processing.

关 键 词：溶解离子 白云石 磷矿 氟磷灰石 浮选 表面性质 

分 类 号：TD923[矿业工程—选矿]