所属单位：冶金工程学院

发表刊物：Characterization of Minerals,Metals and Materials /2015 TMS(EI会议)

关键字：中文关键字：黄铜矿；电位控制浮选；EIS;XPS，英文关键字：Chalcopyrite; Potential Control Flotation; Electro

摘要：Electrochemical behavior of natural chalcopyrite in electrolyte solution at pH value of 6.97 was studied by cyclic voltammetry, X-ray photoelectron spectroscopy and electrochemical impedance spectroscopy. The results showed that the electrochemical processes occurred on electrode surface were controlled mainly by the growth of sulfur species at lower applied potentials (<0.35Vvs.SHE), and the oxidative dissolution of sulfur species and the hydroxylation of iron at higher applied potential (>0.45V vs.SHE). The EIS spectra of oxide product layers could be illustrated by the equivalent circuit of Re(QdlRct(QfRf)), and the degree of hydrophilicity for chalcopyrite was higher when the value of charge transfer resistance Rct. was greater. The optimum potential range for the floatation of chalcopyrite in collectorless solution at pH value of 6.97 was between open circuit potential(OCP) of (0.165V) and 0.35V.

备注：俞娟

合写作者：YangHong-ying

第一作者：俞娟

论文类型：期刊论文

卷号：卷：

期号：期：

页面范围：页：

是否译文：否

发表时间：2015-03-01