Mechanical pretreatment of lead-based alloy anodes for zinc electrowinning

Taro Aichi, Rie Sato, Makoto Muramatsu, Hideyuki Takahashi, Kazuyuki Tohji

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

Abstract

There are several ways to condition lead-based alloy anodes for zinc electrowinning: electrochemical treatment, chemical treatment and physical treatment. Two advantages of physical treatments are their productivity and variety. In this report, physical treatments, including blasting with silica, alumina, steel grit and cut zinc wire, were tested. The laboratory tests confirmed there were differences in the formation of anode scales during electrowinning and in the suppression of lead dissolution from the anodes. With an increase in the surface roughness, the misfit between the PbO 2 and the MnO 2 was mitigated and the anchor effect was promoted; these effects resulted in dense Mn oxide scales on the anode.

Original languageEnglish
Title of host publicationT.T. Chen Honorary Symposium on Hydrometallurgy, Electrometallurgy and Materials Characterization - Held During the TMS 2012 Annual Meeting and Exhibition
Pages251-261
Number of pages11
Publication statusPublished - 2012 May 14
EventT.T. Chen Honorary Symposium on Hydrometallurgy, Electrometallurgy and Materials Characterization - TMS 2012 Annual Meeting and Exhibition - Orlando, FL, United States
Duration: 2012 Mar 112012 Mar 15

Publication series

NameTMS Annual Meeting

Other

OtherT.T. Chen Honorary Symposium on Hydrometallurgy, Electrometallurgy and Materials Characterization - TMS 2012 Annual Meeting and Exhibition
CountryUnited States
CityOrlando, FL
Period12/3/1112/3/15

Keywords

  • Anode
  • Electrowinning
  • Lead anode
  • Pretreatment
  • Zinc

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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  • Cite this

    Aichi, T., Sato, R., Muramatsu, M., Takahashi, H., & Tohji, K. (2012). Mechanical pretreatment of lead-based alloy anodes for zinc electrowinning. In T.T. Chen Honorary Symposium on Hydrometallurgy, Electrometallurgy and Materials Characterization - Held During the TMS 2012 Annual Meeting and Exhibition (pp. 251-261). (TMS Annual Meeting).