Depressing mechanism of copper-lead separation by density functional theory method

被引：0
|
作者：
Zhang X.-R. [1 ]
Liu C.-J. [1 ]
Zhu Y.-G. [1 ]
Zheng G.-B. [1 ]
Shang Y.-B. [1 ]
Han L. [1 ]
Ai J. [1 ]
机构：
[1] State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining and Metallurgy, Beijing
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2017年 / 27卷 / 04期
关键词：
Chalcopyrite; Density functional theory; Depressant; Galena; Separation;
D O I：
10.19476/j.ysxb.1004.0609.2017.04.022
中图分类号：
学科分类号：
摘要：
In order to discuss the separation mechanism of copper-lead ore, the crystal and surface electronic structures of chalcopyrite and galena were studied, by density functional theory (DFT), based on quantum chemistry. The results show that differences of the electronic structure of chalcopyrite and galena could directly affect their floatabilities, such as band structure, density of states, Mulliken populations, and so on. And the frontier orbitals of chalcopyrite and galena were also calculated, from which the interaction energies between minerals and TGA were obtained and compared. So, the essence of flotation separation of copper and galena were well revealed. © 2017, Science Press. All right reserved.
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页码：843 / 849
页数：6
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