Interaction mechanism of the adopted reagents in the flotation recovery of sphalerite and pyrite from a galena flotation tailing: First-principles calculations

被引：15

作者：

Zhang, Limin ^{[1
,2
]}

Gao, Jiande ^{[3
]}

Khoso, Sultan Ahmed ^{[4
]}

Liu, Yuling ^{[5
]}

Tian, Mengjie ^{[1
,2
,6
]}

机构：

[1] Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Peoples R China

[2] Cent South Univ, Key Lab Hunan Prov Clean & Efficient Utilizat Str, Changsha 410083, Peoples R China

[3] Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China

[4] Mehran Univ Engn & Technol, Dept Min Engn, Jamshoro 76062, Pakistan

[5] Cent South Univ, Powder Met Res Inst, Changsha 410083, Peoples R China

[6] Hubei Key Lab Efficient Utilizat & Agglomerat Met, Wuhan 430081, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2021年 / 617卷

基金：

中国国家自然科学基金;

关键词：

Sphalerite; Pyrite; Flotation separation; Cu2+; Butyl xanthate; Lime; COPPER ACTIVATION; SULFIDE MINERALS; ADSORPTION; ZINC; DEPRESSANT; PRODUCTS; SURFACE; ETHYL;

D O I：

10.1016/j.colsurfa.2021.126378

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Sphalerite (ZnS), galena (PbS) and pyrite (FeS2) are the important metallic sulphide minerals. These three sulphide minerals are often associated with each other, and large amounts of sphalerite and pyrite are lost in the galena flotation tailings. In this study, the flotation method was employed to recover sphalerite and pyrite from a galena flotation tailing waste. The reagent scheme, including Cu2+ activator and butyl xanthate (BX) collector, can efficiently recover sphalerite and pyrite to obtain a two-mineral mixed concentrate with the Zn and Fe grades of similar to 17 % and similar to 26 %, respectively, in the sphalerite-pyrite bulk rough flotation. Quicklime (CaO) depressant in combination with BX collector can efficiently separate sphalerite and pyrite to obtain the two products in the sphalerite/pyrite separation rough flotation: the sphalerite concentrate with the Zn grade of similar to 33 % and the pyrite concentrate with the Fe grade of similar to 36 %. The first-principles calculations were employed to study the interaction mechanism of the adopted reagents in the recoveries of sphalerite and pyrite from the galena flotation tailing. This study provides an important reference for the recoveries of sphalerite and pyrite from similar galena tailings.

引用

页数：13