Flotation separation of cervantite from quartz

• Autorzy: Wang J. , Hua Y. , Yu S. , Xiao J. , Xu L. , Wang Z.

Identyfikatory

DOI

10.5277/ppmp170234

• Języki publikacji: EN

Abstrakty

EN

Flotation separation of cervantite (Sb2O4) from quartz was investigated using dodecylamine (DDA) as a collector. Experiments were conducted on single minerals and on a synthetic mixture of quartz and cervantite. Flotation separation mechanisms were investigated using the zeta potential technique, solution chemistry principles, density functional calculations and Fourier Transform Infrared (FT-IR) spectroscopy. The results indicated that DDA, primarily in the form of molecules, exhibited excellent performance in flotation of cervantite and quartz at pH 10.5. The adsorption energy of the DDA molecules on the cervantite surface was greater than the adsorption energy of water molecules, while the adsorption energy of DDA on the quartz surface was less than the adsorption energy of water molecules. DDA molecules can be adsorbed on the quartz surface to a certain extent, but it was difficult for the same molecule to be adsorbed on the cervantite surface in the pulp. This resulted in flotation of quartz. DDA molecules were adsorbed on quartz not only through physical adsorption but also by hydrogen bonding. However, cervantite could not be floated at pH 10.5 since adsorption of DDA molecules occurred through weak physical bonds on cervantite.

Słowa kluczowe

EN

cervantite; quartz; dodecylamine; flotation; density functional theory

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2017
• Tom: Vol. 53, iss. 2
• Strony: 1119--1132
• Opis fizyczny: Bibliogr. 27 poz., rys., tab.

Twórcy

autor

Wang J.

• Southwest University of Science and Technology, Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education, China

autor

Hua Y.

• Central South University, Changsha, Hunan, China

autor

Yu S.

• TianJin Huakan Ming investment Co., Ltd, China

autor

Xiao J.

• Southwest University of Science and Technology, Mianyang, Sichuan, China

autor

Xu L.

• Southwest University of Science and Technology, Mianyang, Sichuan, China

autor

Wang Z.

• Southwest University of Science and Technology, Mianyang, Sichuan, China

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