Recovery mechanisms of sericite in microcrystalline graphite flotation

• Autorzy: Li H. , Ou L. , Feng Q. , Chang Z.

Identyfikatory

DOI

10.5277/ppmp150202

• Języki publikacji: EN

Abstrakty

EN

Sericite is the main contaminant of concentrate in commercial microcrystalline graphite ore flotation. It was necessary to identify its recovery mechanisms so that the appropriate solution can be selected. In this study, the influence of sericite on flotation selectivity of microcrystalline graphite ore and its recovery mechanisms were investigated. Artificial mixtures flotation test suggested that sericite seriously reported into concentrate leading to poor flotation selectivity of microcrystalline graphite ore. However, the aggregation/dispersion behavior of artificial mixtures indicated that a large repulsive energy existed between sericite and microcrystalline graphite particles at pH 7.4, and sericite was not likely to report into graphite concentrate by slime coating. The results obtained from contact angle measurements and a technique of Warren showed that the floated sericite reached the froth via a combination of both entrainment and entrapment mechanisms, not via true flotation.

Słowa kluczowe

EN

microcrystalline graphite; sericite; flotation; entrainment; entrapment

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2015
• Tom: Vol. 51, iss. 2
• Strony: 387--400
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Li H.

• College of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, PR China

autor

Ou L.

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

autor

Feng Q.

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

autor

Chang Z.

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

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