Flotation separation of chalcopyrite from talc using carboxymethyl chitosan as depressant
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Institute of Geology and Geophysics, Chinese Academy of Science, Beijing, China
Jiangxi University of Science and Technology
Publication date: 2017-05-24
Corresponding author
Bo Feng   

Jiangxi University of Science and Technology, School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzho, 341000 Ganzhou, China
Physicochem. Probl. Miner. Process. 2017;53(2):1255-1263
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.
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