Density functional theory and experimental studies of Cu2+ activation on a cyanide-leached sphalerite surface

作者：Qiu, Tingsheng^*; He, Yuanqing; Qiu, Xianhui; Yang, Xiuli

来源：Journal of Industrial and Engineering Chemistry, 2017, 45: 307-315.

DOI：10.1016/j.jiec.2016.09.040

• Sphalerite
• Density functional theory
• Cyanide-leached
• Cu2+ activation

Density functional theory calculations,flotation behavior, X-ray photoelectron spectroscopy, and infrared spectra were combined to reveal the Cu2+ activation mechanism on a cyanide (CN-)-leached sphalerite surface. 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 Cu-2 adsorption. As the amount of chemically adsorbed Cu2+ on the sphalerite surface increased, Cu2+ began to desorb CN-, leading to the same result, which is consistent with the low CN- coverage.

• 出版日期2017-1-25
• 单位江西理工大学