硅酸盐矿物表面特性的X射线光电子能谱分析

利用X射线光电子能谱(XPS)分析了5类结构9种硅酸盐矿物表面的元素分布、价态及多价金属阳离子对于阴离子的相对密度,结合矿物的晶体化学特征和在阴离子捕收剂浮选体系中的可浮性的研究表明,矿物的结构特征与其表面元素质量分数、状态、表面电性及可浮性之间具有密切的关系·5类硅酸盐矿物由于结构特征的差异,导致解离后暴露于表面的元素质量分数、价态存在差异,进而导致矿物表面电性及与捕收剂结合的牢固程度不同,从而使各类结构矿物在阴离子捕收剂浮选体系中具有不同的浮选特征·较系统地研究了多种硅酸盐矿物浮选的晶体化学原理·

X-ray Photoelectron Spectrometric Analysis on Surface Property of Silicate Minerals

The surface element distribution, valence and relative density of polyvalent metal cation on anion of nine specie of silicate minerals belonging to five kinds of silicate structure were analyzed by X ray photoelectron spectrometric. The structure characteristics, element content and state, surface potential, and floatability of minerals are closely related with each other. Because of different structure characteristics of the five kinds of silicate minerals, elements content and valence on dissociated minerals surface are diversities. The surface potential and firm extent combined with collector are discriminative, and the flotation characteristics for every kinds of structures, of silicate minerals in anion collector flotation system are different. The crystal chemistry principle of flotation about many kinds of silicate minerals was research systemically for the first time.