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首页> 外文期刊>Minerals Engineering >Effects of bivalent salts on the flotation separation of Na-Feldspar from K-feldspar
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Effects of bivalent salts on the flotation separation of Na-Feldspar from K-feldspar

机译：二价盐对钠长石与钾长石浮选分离的影响

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摘要

Despite similarities in the physical and physico-chemical properties of Na- and K-feldspars, their flotation separation with monovalent ions exhibited a reasonable success. Further studies have been therefore initiated to ascertain whether multivalent ions, i.e., Ca and Ba can widen the window of separation of individual feldspar minerals. Upon addition of multivalent ions, ion exchange between the added ions and those in the crystal lattice and ion adsorption in the electrical double layer occurs. The ionic size of Na and Ca cations and those of K and Ba cations are almost the same indicating the ability of exchange among each couple. The compatibility of this exchange determines the extent of surface modification with the added ions. In this study, amine flotation together with zeta potential measurements has been studied as a function of bivalent salts to understand their effects on differential separation of feldspar minerals. It is found that bivalent complex and yet interesting features of adsorption and ion exchange patterns. The mechanism of action is elaborated on the basis of flotation and zeta potential data.
机译：尽管钠长石和钾长石的物理和物理化学性质相似，但它们与单价离子的浮选分离显示出合理的成功。因此，已经开始进一步研究以确定多价离子，即Ca和Ba是否可以拓宽单个长石矿物的分离范围。在添加多价离子时，在添加的离子与晶格中的离子之间发生离子交换，并且在双电层中发生离子吸附。 Na和Ca阳离子的离子大小与K和Ba阳离子的离子大小几乎相同，表明每对离子之间具有交换能力。这种交换的相容性决定了所添加离子对表面改性的程度。在这项研究中，已经研究了胺浮选和zeta电位测量作为二价盐的函数，以了解其对长石矿物差异分离的影响。发现二价络合物具有吸附和离子交换模式的有趣特征。作用机理是根据浮选和ζ电势数据来阐述的。

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