金属阳离子对重晶石浮选行为的影响  

The effect of metal cations on flotation behavior of barite

作　　者：戴惠新 唐冬冬[1,2] 杜五星 王飞旺 DAI Hui-xin;TANG Dong-dong;DU Wu-xing;WANG Fei-wang(State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming 650093,China;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;Zhengzhou Non-ferrous Metals Research Institute Co.Ltd of CHALCO,Zhengzhou 450041,China;National Aluminum Smelting Engineering Technology Research Center,Zhengzhou 450041,China)

机构地区：[1]复杂有色金属资源清洁利用国家重点试验室,云南昆明650093 [2]昆明理工大学国土资源工程学院,云南昆明650093 [3]中国铝业郑州有色金属研究院有限公司,河南郑州450041 [4]国家铝冶炼工程技术研究中心,河南郑州450041

出　　处：《矿物学报》2020年第5期595-600,共6页Acta Mineralogica Sinica

基　　金：国家自然科学基金项目(批准号:51764023,51264020);云南省选冶新技术重点实验室开放课题基金(编号:xy2015kf01)。

摘　　要：通过单矿物浮选、溶液化学计算、Zeta电位测试以及红外光谱分析等手段研究了金属阳离子(Fe3+、Zn2+、Fe2+和Pb2+)对重晶石浮选行为的影响以及作用原理。浮选结果表明,在十二烷基磺酸体系下,4种金属阳离子Fe3+、Zn2+、Fe2+和Pb2+在p H值为4.0~11.2范围内对重晶石的可浮性都具有活化作用,其中Pb2+对重晶石的可浮性活化效果最好,Fe2+次之。Pb2+活化机理研究显示,Pb2+主要以Pb2+、Pb(OH)+的形式和重晶石表面吸附的OH-结合并脱水,然后吸附在重晶石矿物表面并促进十二烷基磺酸根阴离子在重晶石表面的吸附,从而增强了重晶石的可浮性。The effect and its principle of action of metal cations (Fe3+,Zn2+,Fe2+and Pb2+) on flotation behavior of barite have been studied in this paper by using means of the mineral separates flotation,stoichiometric calculation of solutions,Zeta potential test,and infrared spectroscopy.Flotation experimental results show that four metal cations of Fe3+,Zn2+,Fe2+and Pb2+can activate the flotability of barite at p H values ranging from 4 to 11.2 in the SDS flotation system.Especially,the Pb2+has the best activation effect on the flotability of barite,followed by the Fe2+.The Pb2+activation mechanism study shows that the Pb2+,mainly occurred in forms of Pb2+and Pb(OH)+,was combined and dehydrated with the OH--adsorbed on surface of the barite,and then the combined Pb2+(Pb2+,Pb(OH)+) and OH-,which was adsorbed on surface of the barite,has promoted the adsorption of dodecyl sulfonate anions on the surface of barite,and thereby has enhanced the floatability of barite.

关 键 词：十二烷基磺酸钠 重晶石 金属阳离子 机理分析 

分 类 号：P579[天文地球—矿物学] TD91[天文地球—地质学]