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Effect of Potential on Characteristics of Oxide Product Layers on Chalcopyrite

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Characterization of Minerals, Metals, and Materials 2015

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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). 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 OCP (0.165V) and 0.35V.

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Author information

Authors and Affiliations

  1. School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an, 710055, China

    Yu Juan

  2. School of Materials and Metallurgy, Northeastern University, Shenyang, 110004, China

    Yang Hong-ying

Authors
  1. Yu Juan
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  2. Yang Hong-ying
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Editor information

Editors and Affiliations

  1. Materials Science and Technology Division, Los Alamos National Laboratory, Canada

    John S. Carpenter (technical staff member) (technical staff member)

  2. Department of Metallurgical Engineering, School of Materials Science and Engineering, Chongqing University, China

    Chenguang Bai (Professor) (Professor)

  3. School of Engineering and Information Technology, UNSW Australia at the Australian Defence Force Academy, Australia

    Juan Pablo Escobedo (Lecturer) (Lecturer)

  4. Department of Materials Science and Engineering, Michigan Technological University, USA

    Jiann-Yang Hwang (Professor) (Professor)

  5. University of Jordan, Jordan

    Shadia Ikhmayies B.Sc. from the physics department

  6. Department of Materials Science and Engineering and Institute of Materials Processing, Michigan Technological University, USA

    Bowen Li (Research Associate Professor) (Research Associate Professor)

  7. CanmetMATERIALS in Natural Resources Canada, Canada

    Jian Li (research scientist) (research scientist)

  8. Military Institute of Engineering (IME), Rio de Janeiro, Brazil

    Sergio Neves Monteiro (Professor) (Professor)

  9. Department of Materials Science and Engineering, Michigan Technological University, USA

    Zhiwei Peng (Research Assistant Professor, a new faculty member) (Research Assistant Professor, a new faculty member)

  10. Central South University, China

    Zhiwei Peng (Research Assistant Professor, a new faculty member) (Research Assistant Professor, a new faculty member)

  11. ArcelorMittal Global R&D, East Chicago, Indiana, USA

    Mingming Zhang (a senior research engineer) (a senior research engineer)

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© 2015 TMS (The Minerals, Metals & Materials Society)

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Juan, Y., Hong-ying, Y. (2015). Effect of Potential on Characteristics of Oxide Product Layers on Chalcopyrite. In: Carpenter, J.S., et al. Characterization of Minerals, Metals, and Materials 2015. Springer, Cham. https://doi.org/10.1007/978-3-319-48191-3_55

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