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首页> 外文期刊>Science of advanced materials >Effects of the Crystal Structures of Three Calcium-Containing Minerals on Their Surface Characteristics in Flotation
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Effects of the Crystal Structures of Three Calcium-Containing Minerals on Their Surface Characteristics in Flotation

机译：浮选中三种含钙矿物晶体结构对其表面特性的影响

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Significant differences in floatability were first observed for calcite, scheelite, and wollastonite with sodium oleate (NaOl) as a collector, even though these minerals contain the same cation, Ca2+. The surface characteristics of the three minerals were studied through zeta potential, contact angle, and X-ray photoelectron spectroscopy (XPS). The results demonstrate that calcite, which has the highest zeta potential, largest contact angle, and highest relative calcium content on its surface, had the best floatability of the three minerals. In contrast, wollastonite, which has the lowest zeta potential, smallest contact angle, and lowest relative calcium content, showed poor floatability. All the surface characteristics of the three minerals can be attributed to the surface densities and surface unsaturated calcium bonds derived from rupture of the mineral crystals. The inherent flotation mechanism has been revealed, allowing the floatability of a mineral to be predicted based on its crystal structure. Additionally, the wollastonite crystal structure, which had seldom been mentioned in the literature, has been studied in detail based on its surface characteristics.
机译：首先观察到方解石，白钨矿和硅灰石以油酸钠（NaOl）为捕收剂，其漂浮性存在显着差异，即使这些矿物含有相同的阳离子Ca2 +。通过ζ电势，接触角和X射线光电子能谱（XPS）研究了三种矿物的表面特性。结果表明，方解石具有最高的ζ电位，最大的接触角和最高的相对钙含量，在三种矿物中具有最佳的漂浮性。相反，具有最低的ζ电位，最小的接触角和最低的相对钙含量的硅灰石显示出差的漂浮性。这三种矿物的所有表面特性都可以归因于矿物晶体破裂产生的表面密度和表面不饱和钙键。已经揭示了固有的浮选机理，从而可以根据矿物的晶体结构预测其浮选性。另外，已经基于其表面特性对硅灰石晶体结构进行了详细研究，该文献中很少提及硅灰石晶体结构。

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