Adsorption and flotation mechanism of a ketoxime-dithiocarbonate surfactant to chalcopyrite

被引：13
作者：
Xiao, Jing-jing [1 ,2 ,3 ]
Yao, Chen [1 ]
Wu, Ya-xin [1 ]
Li, Chang-zhu [3 ]
机构：
[1] Univ South China, Sch Chem & Chem Engn, Hunan Key Lab Design & Applicat Actinide Complexes, Hengyang 421001, Peoples R China
[2] Cent South Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China
[3] Hunan Acad Forestry, State Key Lab Utilizat Woody Oil Resource, Changsha 410004, Peoples R China
来源：
JOURNAL OF CENTRAL SOUTH UNIVERSITY | 2022年 / 29卷 / 12期
基金：
中国国家自然科学基金;
关键词：
O-isopropyl-S- [2-(hydroxyimino) propyl] dithiocarbonate ester; chalcopyrite; hydrophobicity; adsorption mechanism; flotation; BUTYL ETHOXYCARBONYL THIOUREA; COPPER SULFIDES; NICKEL(II) COMPLEXES; XANTHATE ADSORPTION; XANTHOGEN FORMATES; TOF-SIMS; COLLECTORS; PYRITE; COBALT(II); IONS;
D O I：
10.1007/s11771-022-5217-0
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The adsorption mechanism of O-isopropyl-S- [2- (hydroxyimino) propyl] dithiocarbonate ester (IPXPO) to chalcopyrite was investigated by using contact angle, in-situ atomic force microscopy (in-situ AFM), cyclic voltammetry (CV) and X-ray photoelectron spectroscopy (XPS). The results of contact angle and in-situ AFM demonstrated that IPXPO adsorbed on chalcopyrite increases surface hydrophobicity and roughness. It was found by CV experiments that a layer passive film was formed. The results of XPS spectra further revealed that the thiol S atom, oxime N atom, and O atom in the IPXPO molecule might react with copper atoms to form Cu-S, Cu-N, and Cu-O bonds, respectively. An artificial mixed minerals flotation test indicated that under the condition of pH=6.79 and IPXPO initial concentration 5x10(-5) mol/L, the flotation recovery of chalcopyrite reached about 90%, while for pyrite only 25%, suggesting that IPXPO is an excellent collector for flotation separation and enrichment of chalcopyrite.
引用
收藏
页码：3847 / 3857
页数：11
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