Utilization of N-carboxymethyl chitosan as a selective depressant for talc in flotation of chalcopyrite

• Autorzy: Liu Cheng , Feng Qiming , Shi Qing , Zhang Wencai , Song Shaoxian

Identyfikatory

DOI

10.5277/ppmp18114

• Języki publikacji: EN

Abstrakty

EN

Flotation separation of chalcopyrite from talc is difficult because of the natural hydrophobicity of two minerals. In this work, the flotation separation of chalcopyrite from talc using N-carboxymethyl chitosan as a depressant for talc was studied. The micro-flotation results indicated that the flotation separation of chalcopyrite from talc cannot be realized effectively at pH 9 with low concentration of N-carboxymethyl chitosan, in the presence of calcium ions, talc was more efficiently depressed by N-carboxymethyl chitosan, while the chalcopyrite recovery was not influenced. Contact angle, zeta potential and adsorption results showed that Ca2+ and CaOH+ absorbed on the talc surface and increased the absorption amount of N-carboxymethyl chitosan on the mineral surface, and increased hydrophilicity of talc surface, resulting the selective depression for talc in chalcopyrite flotation.

Słowa kluczowe

EN

chalcopyrite; talc; flotation separation; N-carboxymethyl chitosan

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2019
• Tom: Vol. 55, iss. 1
• Strony: 108--115
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Liu Cheng

• School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China

autor

Feng Qiming

• School of Mineral Processing and Bioengineering, Central South University, Changsha 410083, China

autor

Shi Qing

• School of Mineral Processing and Bioengineering, Central South University, Changsha 410083, China

autor

Zhang Wencai

• Department of Mining Engineering, University of Kentucky, 504 Rose Street, 230 Mining & Mineral Resources Building, Lexington, KY 40506-0107, United State

autor

Song Shaoxian

• School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).