Electrochemistry of sphalerite activated by Cu²⁺ ion

来源期刊：中国有色金属学报(英文版)2000年第z1期

论文作者：顾帼华 胡岳华 邱冠周 刘如意

文章页码：64 - 67

Key words：sphalerite； activator； flotation

Abstract: By means of thermodynamic analyses and electrochemical tests, the electrochemical behavior of sphalerite has been studied. Results show that in the weak alkaline or alkaline media, sphalerite will be oxidized to Zn(OH)₂, ZnO^2-₂ and so on, which influences the flotation ability of sphalerite. When Cu²⁺ ion is introduced into the flotation system, due to the oxidation of Cu₂S and CuS, a series of copper sulfide compounds such as Cu₂S, Cu_1.96S, Cu_1.71～1.82S, Cu_1.75S, Cu_1.60S, Cu_1.40S, Cu_1.12S and CuS are produced on the sphalerite surface. The activating role of Cu²⁺ ion can be generalized as two points: the first, a series of activation components of copper sulfide containing different amount of copper are produced; the second, these activation components can prevent the sphalerite from overoxidizing.