The effect of anode composition on passivation of commercial copper electrorefining anodes

Michael S. Moats, J Brent Hiskey

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

As commercial copper electrorefineries look to expand their capacities by increasing their operating current density, the likelihood of anode passivation intensifies. To improve the industry's understanding of the passivation phenomena, the role of anode composition was evaluated. While previous studies have focused on studying one impurity element at a time, this study was conducted using forty-four commercial electrorefining anode samples supplied by ten copper companies The passivation response of each sample was evaluated under accelerated galvanostatic conditions in synthetic copper electrowinning electrolyte at 65°C. This information allows for correlations between composition and passivation tendencies over a wide range of impurity elements and concentrations. It was found that selenium, tellurium, silver, lead and nickel accelerated passivation. It appeared that oxygen accelerated passivation when increased from 500 to 1500 ppm, but further increases did not have an effect. Arsenic was the only impurity found that inhibited passivation.

Original languageEnglish (US)
Title of host publication2006 TMS Fall Extraction and Processing Division: Sohn International Symposium
Pages507-518
Number of pages12
Volume6
StatePublished - 2006
Event2006 TMS Fall Extraction and Processing Division: Sohn International Symposium - San Diego, CA, United States
Duration: Aug 27 2006Aug 31 2006

Other

Other2006 TMS Fall Extraction and Processing Division: Sohn International Symposium
CountryUnited States
CitySan Diego, CA
Period8/27/068/31/06

Fingerprint

Passivation
Anodes
Copper
Chemical analysis
Impurities
Electrowinning
Time and motion study
Tellurium
Selenium
Arsenic
Chemical elements
Industry
Silver
Current density
Lead
Electrolytes
Nickel
Oxygen

Keywords

  • Anode
  • Copper electrorefining
  • Passivation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Moats, M. S., & Hiskey, J. B. (2006). The effect of anode composition on passivation of commercial copper electrorefining anodes. In 2006 TMS Fall Extraction and Processing Division: Sohn International Symposium (Vol. 6, pp. 507-518)

The effect of anode composition on passivation of commercial copper electrorefining anodes. / Moats, Michael S.; Hiskey, J Brent.

2006 TMS Fall Extraction and Processing Division: Sohn International Symposium. Vol. 6 2006. p. 507-518.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Moats, MS & Hiskey, JB 2006, The effect of anode composition on passivation of commercial copper electrorefining anodes. in 2006 TMS Fall Extraction and Processing Division: Sohn International Symposium. vol. 6, pp. 507-518, 2006 TMS Fall Extraction and Processing Division: Sohn International Symposium, San Diego, CA, United States, 8/27/06.
Moats MS, Hiskey JB. The effect of anode composition on passivation of commercial copper electrorefining anodes. In 2006 TMS Fall Extraction and Processing Division: Sohn International Symposium. Vol. 6. 2006. p. 507-518
Moats, Michael S. ; Hiskey, J Brent. / The effect of anode composition on passivation of commercial copper electrorefining anodes. 2006 TMS Fall Extraction and Processing Division: Sohn International Symposium. Vol. 6 2006. pp. 507-518
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