Relationship between rheological behavior and flotation rate in slurry with different chalcopyrite and lizardite concentration

Abstract

The relationship between viscosity/yield stress and flotation rate in different chalcopyrite and lizardite concentrations was investigated by zeta potential measurements, rheological tests, flotation experiments, and Derjguin-Landau-Verwey-Overbeek theoretical calculation. Results indicated that the concentration of minerals would affect the viscosity and yield stress of the slurry. That is, the viscosity/yield stress in the slurry rises accordingly when the concentration of minerals increases. The increase in viscosity/yield stress in slurry is also unfavorable to the enrichment of chalcopyrite but is conducive to the entrainment of lizardite in either single or binary system. Specifically, the flotation rate of chalcopyrite decreases while that of lizardite increases with the rise in viscosity/yield stress.

Keywords

chalcopyrite / lizardite / rheology / flotation rate

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