Shuming Wen

TL;DR: Ethanediamine was used to modify the mineral surface of malachite to improve its sulfidization and flotation behavior, and the activation mechanism was investigated by adsorption experiments, X-ray photoelectron spectroscopy (XPS) analysis, and zeta potential measurements as discussed by the authors.

TL;DR: In this article, the surface modification with chloride promotes the stable adsorption of HS− onto the cerussite surface, and the hybridization of Pb 6p orbital at the surface layer and S 3p orbital from HS− is enhanced.

TL;DR: In this paper, the interaction between sulfide-ion species and smithsonite surfaces and its response to flotation performance were investigated by means of microflotation experiments, surface-adsorption tests, zeta-potential determination, and X-ray photoelectron spectroscopy (XPS) analysis.

TL;DR: In this paper, the interaction among sphalerite surface, copper and ethyl xanthate (EX) was simulated using the density functional theory (DFT), and the results of DFT indicate that four types of stable interaction models exist among EX and copper, i.e., EX interacts with the Cu substituted for Zn.

TL;DR: In this article, a promising method of improving the sulfidization flotation of smithsonite through surface modification with ammonia was proposed, which increased the amount of sulfide ion species adsorbed onto the mineral surface, thereby facilitating the attachment of xanthate species onto the sulfified mineral surface and promoting its hydrophobicity.