Abstract

Abstract The interaction between sulfide ion species and malachite surfaces in relation to flotation was studied in this work using X-ray photoelectron spectroscopy analysis, surface adsorption, zeta potential determination, and micro-flotation experiments. Results demonstrate that the flotation recovery of malachite was correlated with the contents of sulfidization products and their active components as well as the residual sulfide ion species in pulp solutions. The sulfidization product was composed of cuprous monosulfide, cuprous disulfide, and cuprous polysulfide. Among them, disulfide and polysulfide positively contributed to the activity of the product.

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