Flotation separation of chalcopyrite from talc using carboxymethyl chitosan as depressant

被引：12
|
作者：
Guo Qian [1 ]
Feng Bo [2 ]
Zhang Danping [1 ]
Guo Jujie [1 ]
机构：
[1] Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
[2] Jiangxi Univ Sci & Technol, Jiangxi Key Lab Min Engn, Ganzhou, Peoples R China
来源：
PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING | 2017年 / 53卷 / 02期
基金：
中国国家自然科学基金;
关键词：
talc; chalcopyrite; flotation; separation; carboxymethyl chitosan; MOLECULAR-WEIGHT; GUAR GUM; ADSORPTION; INTERFACE; MECHANISM; CMC;
D O I：
10.5277/ppmp170244
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：
Flotation separation of chalcopyrite from talc using carboxymethyl chitosan as a depressant was studied. Flotation tests indicated that carboxymethyl chitosan had a selective depression effect on talc and the use of carboxymethyl chitosan as the depressant could achieve flotation separation of chalcopyrite from talc at pH 7. Adsorption studies showed that carboxymethyl chitosan only adsorbed on the surface of talc. This was the reason why carboxymethyl chitosan had high depression selectivity for talc. The zeta potential measurements and XPS analysis indicated that carboxymethyl chitosan adsorbed on the talc surface mainly through physical interaction and hydrophobic interaction may be the main driving force.
引用
收藏
页码：1255 / 1263
页数：9
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