Interaction mechanism of copper ions with the surface of sulfidized malachite and its response to flotation

The copper ion is a common metal in the pulp beneficiation industry, and it affects recovery of target minerals. In this study, we investigated interaction mechanism ions with surface sulfidized malachite its effect on flotation. flotation behavior hydrophobicity were studied by microflotation contact-angle tests. experimental results showed that modified suitable concentration was enhanced increased. However, after high-concentration copper-ion treatment, decreased. Adsorption tests collector consumption an appropriate amount According to zeta-potential measurement X-ray photoelectron spectroscopy analysis, modification concentration, less reactive –OH component reduced Cu–S increased, indicating reaction activity sulfidization product mineral improved. After high large number hydroxide complexes formed, resulting decrease activity. Finally, layer visually characterized time-of-flight secondary-ion mass spectroscopy. • Cu could interact surfaces form Cu-S species. index greatly affected ions. A harmful xanthate species minerals surfaces.