油酸钠体系中铈离子对萤石和方解石浮选的影响  

Effect of Ce^(3+)in Sodium Oleate System on Flotation of Fluorite and Calcite

作　　者：汤家焰 何嘉宁 鲁向锦 祝雯 TANG Jiayan;HE Jianing;LU Xiangjin;ZHU Wen(School of Mining and Coal Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China;Inner Mongolia Key Laboratory of Mining Engineering,Baotou 014010,Inner Mongolia,China)

机构地区：[1]内蒙古科技大学矿业与煤炭学院,内蒙古包头014010 [2]内蒙古自治区矿业工程重点实验室,内蒙古包头014010

出　　处：《矿冶工程》2023年第2期48-51,共4页Mining and Metallurgical Engineering

基　　金：内蒙古科技大学高校基本科研业务费项目(074);内蒙古自治区自然科学基金(2019BS05019)。

摘　　要：通过浮选试验、Zeta电位测试、溶液化学分析以及X射线光电子能谱分析等手段,研究了油酸钠体系中铈离子对萤石和方解石浮选行为的影响。结果表明,在油酸钠体系中,较低浓度的铈离子在酸性以及中性条件下以CeF_(3)·0.5H_(2)O(s)形式存在于萤石表面,为油酸钠的吸附提供了更多的活性位点,可对萤石产生活化作用;同时也会以Ce_(2)(CO_(3))_(3)·8H_(2)O(s)形式存在于方解石表面,虽然也提供了更多的活性位点,但Ce_(2)(CO_(3))_(3)·8H_(2)O(s)的亲水性以及结晶水的空间位阻效应阻碍了油酸钠在方解石表面的吸附,对方解石产生抑制作用。铈离子在碱性条件下多以Ce(OH)3(s)形式存在于矿浆体系中,消耗了油酸钠,减少了油酸钠在萤石和方解石表面的吸附量,对二者均产生抑制作用。The influence of Ce^(3+)in the sodium oleate system on the flotation of fluorite and calcite was investigated by flotation test,zeta potential measurement,solution chemistry study and X⁃ray photoelectron spectroscopy analysis.The results reveal that in the sodium oleate system,Ce^(3+)with a low concentration exists on fluorite surface in the form of CeF_(3)·0.5H_(2)O(s)under acidic and neutral conditions,therewith,fluorite can be activated to generate more active sites for the adsorption of sodium oleate.Meanwhile,Ce^(3+)can be adsorbed onto calcite in the form of Ce_(2)(CO_(3))_(3)·8H_(2)O(s).There are more active sites generated as well,but calcite may be depressed as the hydrophilic nature of Ce_(2)(CO_(3))_(3)·8H_(2)O(s)and the spatial site barrier effect of crystalline water hinder the adsorption of sodium oleate.In alkaline pulp,Ce^(3+)is mostly precipitated to form Ce(OH)3(s)and depresses both fluorite and calcite as Ce(OH)3(s)can consume sodium oleate and reduce its adsorption on both minerals.

关 键 词：氟碳铈矿 白云鄂博矿 萤石 方解石 铈离子 溶液化学 浮选 油酸钠体系 

分 类 号：TD923[矿业工程—选矿]