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电化学预处理对Pb2+活化白云母可浮性的调控机理
引用本文:王鑫,王宇斌,王妍,文堪,何廷树. 电化学预处理对Pb2+活化白云母可浮性的调控机理[J]. 有色金属(选矿部分), 2021, 0(3): 135-142
作者姓名:王鑫  王宇斌  王妍  文堪  何廷树
作者单位:西安建筑科技大学 资源工程学院,西安建筑科技大学 资源工程学院,西安建筑科技大学 资源工程学院,西安建筑科技大学 资源工程学院,西安建筑科技大学 资源工程学院
基金项目:陕西省科技厅重点研发项目(2018GY—088)
摘    要:为阐明油酸钠体系下电化学预处理对Pb2+活化白云母可浮性的影响规律及作用机理,研究利用电化学预处理后的硝酸铅溶液进行纯矿物浮选试验,采用XPS、Zeta电位、红外光谱等检测手段对不同白云母样品进行表征.结果 表明,电化学预处理可有效调控Pb2+对白云母的活化作用.与未处理相比,预处理后的硝酸铅溶液作用于白云母表面可使白...

关 键 词:电化学预处理  白云母  Pb2+  调控  活化作用
收稿时间:2020-10-20
修稿时间:2020-11-09

Regulation of the Activation of Lead Ion on Muscovite through Electrochemical Pretreatment
WANG Xin,WANG Yubin,WANG Yan,Wen Kan and He Tingshu. Regulation of the Activation of Lead Ion on Muscovite through Electrochemical Pretreatment[J]. , 2021, 0(3): 135-142
Authors:WANG Xin  WANG Yubin  WANG Yan  Wen Kan  He Tingshu
Abstract:In order to understand the influence and mechanism of Pb2+ on the floatability of muscovite through electrochemical pretreatment in the sodium oleate system, a pure mineral flotation test using lead nitrate solution after electrochemical pretreatment was tested, and the muscovite samples were characterized through Zeta potential, infrared spectroscopy and XPS. The results suggested that electrochemical pretreatment could significantly regulate the activation of Pb2+ on muscovite. Compared with untreated, the pretreatment of lead nitrate solution on the muscovite surface can reduce the recovery rate of muscovite by 32.4%. The mechanism is that the pretreatment can reduce the pH value, increase the conductivity of the lead nitrate solution; meanwhile, pretreatment can also convert Pb2+ into PbO2 and lead element in lead nitrate solution, reduce the content of Pb2+, and decrease the lead hydroxyl complexes on the muscovite surface, which is not conductive to the activation of Pb2+ on muscovite. The study not only provide a theoretical basis for electrochemical pretreatment to regulate the activation of Pb2+ on non-metallic minerals, but also give a certain reference significance for the agents of electrochemical pretreatment.
Keywords:electrochemical pretreatment   muscovite   lead ion   regulation   activation
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