yujuan
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- Professor
- Supervisor of Doctorate Candidates
- Supervisor of Master's Candidates
- Name (Pinyin):yujuan
- School/Department:冶金工程学院
- Education Level:With Certificate of Graduation for Doctorate Study
- Degree:Doctoral degree
- Professional Title:Professor
- Status:Employed
- Academic Titles:硕士、博士生导师
- Alma Mater:东北大学
- Discipline:Metallurgical Engineering
Other Contact Information
- Email：
- Paper Publications
EFFECT OF POTENTIAL ON CHARACTERISTICS OF OXIDE PRODUCT LAYERS ON CHALCOPYRITE
Release time:2024-08-09 Hits:
- Affiliation of Author(s):冶金工程学院
- Journal:Characterization of Minerals,Metals and Materials /2015 TMS(EI会议)
- Key Words: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
- Abstract: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.
- Note:俞娟
- Co-author:YangHong-ying
- First Author:yujuan
- Indexed by:Journal paper
- Volume:卷：
- Issue:期：
- Page Number:页：
- Translation or Not:no
- Date of Publication:2015-03-01