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Metallurgical and Materials Transactions B

, Volume 27, Issue 3, pp 393–398 | Cite as

Fundamental studies of copper anode passivation during electrorefining: Part I. development of techniques

  • Xuan Cheng
  • J. Brent Hiskey
Electrometallurgy

Abstract

Anode passivation is an extremely important phenomenon in commercial copper electrorefining operations. Due to the electrochemical nature of the refining process, various electrochemical techniques have been applied to examine anode passivation behavior. In this investigation, cyclic voltammetry, linear potential sweep, and chronopotentiometry measurements were carried out on several commercial copper anodes, as well as on pure electrowon (EW) copper cathode, in synthetic electrolytes simulating the primary constituents for industrial operations. The important parameters associated with anode passivation were identified and compared for the three electrochemical techniques. Chronopotentiometry is an extremely sensitive technique and proved to be the most suitable for analyzing and characterizing copper anode passivation.

Keywords

Cyclic Voltammetry Pure Copper Copper Anode Current Density Maximum 23rd Cycle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© The Minerals, Metals & Materials Society - ASM International - The Materials Information Society 1996

Authors and Affiliations

  • Xuan Cheng
    • 1
  • J. Brent Hiskey
    • 1
  1. 1.Copper Research CenterUniversity of ArizonaTucson

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