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Tingsheng Qiu,Yuanqing He,Xianhui Qiu,Xiuli Yang 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.45 No.-
Density functional theory calculations,flotation behavior, X-ray photoelectron spectroscopy, and infraredspectra were combined to reveal the Cu2+ activation mechanism on a cyanide (CN )-leached sphaleritesurface. Low CN adsorption enhanced the activation capability of Cu2+ on the sphalerite surface,whereas the hydrophilicity of the sphalerite increased with increasing CN coverage, which hindered Cu2+ adsorption. As the amount of chemically adsorbed Cu2+ on the sphalerite surface increased, Cu2+ beganto desorb CN , leading to the same result, which is consistent with the low CN coverage.