Interactions of xanthate with pyrite and galena surfaces in the presence and absence of oxygen

被引：46

作者：

Chen, Jian-Hua ^{[1
,2
]}

Li, Yu-Qiong ^{[1
]}

Lan, Li-Hong ^{[3
,4
]}

Guo, Jin ^{[2
]}

机构：

[1] Guangxi Univ, Coll Resources & Met, Nanning 530004, Peoples R China

[2] Guangxi Univ, Coll Phys Sci & Engn, Nanning 530004, Peoples R China

[3] Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Peoples R China

[4] Guangxi Univ, Coll Chem & Ecoengn, Nanning 530004, Peoples R China

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2014年 / 20卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Density-functional theory; Sulfide minerals; Xanthate; Adsorption; Oxidation; DENSITY-FUNCTIONAL THEORY; DISC ELECTRODE RRDE; SULFIDE MINERALS; ADSORPTION; REDUCTION; FLOTATION; OXIDATION; COPPER; LEAD;

D O I：

10.1016/j.jiec.2013.03.039

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, first-principles calculations were performed to investigate the interactions of hydrogen xanthate (HOCS2-) with pyrite (1 0 0) and galena (1 0 0) surfaces. The calculation results suggest that strong chemisorption of HOCS2- occurs at Fe sites on the pyrite (1 0 0) surface, whereas its interaction at Pb sites on the galena (1 0 0) surface is weak. The interaction of xanthate with oxidized pyrite surface is weakened while the interaction of xanthate with oxidized galena surface is enhanced. The hydration of xanthate and mineral surfaces is discussed. Dixanthogen could be formed on the pyrite surface but not on the galena surface. (C) 2013 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：268 / 273

页数：6

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