Dispersive effect of low molecular weight sodium polyacrylate on pyrite-serpentine flotation system

• Autorzy: Zhao K. , Yan W. , Wang X. , Gu G. , Deng J. , Zhou X. , Hui B.

Identyfikatory

DOI

10.5277/ppmp170240

• Języki publikacji: EN

Abstrakty

EN

In this work, the dispersive effect of low molecular weight sodium polyacrylate (PAAS) on serpentine, and its dispersion mechanism were systematically investigated through zeta potential measurements, micro and batch flotation as well as adsorption tests. At pH 5, where flotation of iron sulphide was routinely performed, pyrite and serpentine minerals were oppositely charged, and therefore they were attracted to each other. Slime coatings of serpentine adhered to the surface of pyrite, decreasing the adsorption density of a collector on the pyrite surface, but also reducing the flotation recovery. PAAS increased the flotation recovery of pyrite by promoting dispersion between pyrite and serpentine. The effective flotation separation of pyrite from the refractory iron sulphide ore was possible by using PAAS as a dispersant. Anionic PAAS adjusted the surface potential of serpentine through adsorption on the serpentine surface and changed the interaction between pyrite and serpentine particles from attractive to repulsive, and then dispersed pyrite and serpentine.

Słowa kluczowe

EN

dispersant; serpentine; flotation; surface potential; dispersion mechanism

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2017
• Tom: Vol. 53, iss. 2
• Strony: 1200--1213
• Opis fizyczny: Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Zhao K.

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
• Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, Sichuan, China

autor

Yan W.

• Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, Sichuan, China

autor

Wang X.

• Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, Sichuan, China

autor

Gu G.

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

autor

Deng J.

• Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, Sichuan, China

autor

Zhou X.

• Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, Sichuan, China

autor

Hui B.

• Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, Sichuan, China

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