Flotation separation of sphalerite from galena using eco-friendly and efficient depressant pullulan

被引：43

作者：

Cui, Yanfang

Jiao, Fen ^{[1
]}

Qin, Wenqing

Wang, Chen

Li, Xinchun

机构：

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

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2022年 / 295卷

基金：

中国国家自然科学基金;

关键词：

Galena; Sphalerite; Selective flotation; Pullulan; Depressant; COLLECTING PERFORMANCE; ADSORPTION MECHANISM; CHALCOPYRITE; PYRITE; ORE; GUM;

D O I：

10.1016/j.seppur.2022.121013

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Pullulan (PL), an eco-friendly and efficient reagent, was studied as a depressant in the separation of galena and sphalerite. Its depression mechanism was studied through zeta potential measurement, contact angle measurement, reagent adsorption and XPS measurement. Micro-flotation experiment showed that PL was an effective depressant for sphalerite. Artificial mixed mineral experiment resulted in a Pb concentrate with a recovery of 86.11% and a grade of 69.82% Pb and a Zn concentrate with a recovery of 84.25% and a grade of 57.21% Zn when the PL concentration was 20 mg/L. Zeta potential and XPS measurements showed that PL was adsorbed on sphalerite and galena surface by hydrogen bonding and the adsorption on sphalerite surface was stronger than that of galena. Contact angle measurement and reagent adsorption demonstrated that PL prevented the adsorption of collector on the surface of sphalerite but had no effect on galena.

引用

页数：7

共 31 条

[1] Mechanism of sodium sulfide on flotation of cyanide-depressed pyrite [J].