Evaluation of ferric ion reductants in sulfate based copper electrowinning electrolyte

Ravindra Bhide, Jinshan Li, Michael L. Free, Jan D. Miller, Brent J. Hiskey

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


In order to improve energy efficiency and avoid acid mist an alternative anodic source of oxidation of ferrous ions has been proposed as an alternative to water hydrolysis in the conventional copper electrowinning process. However, because ferrous ions are converted to ferric ions at anode, there is a need for reduction of ferric ions to ferrous ions to facilitate an acceptable overall process. In this study sulfur, mineral sulfides, sulfur dioxide and hydrogen were studied since these were found to carry out the reduction without introducing any impurities in the solution, which may affect the actual electrowinning process. The performance of these compounds was evaluated in relation to overall process requirements.

Original languageEnglish (US)
Title of host publicationHydrometallurgy 2008
Subtitle of host publicationProceedings of the 6th International Symposium
Number of pages7
StatePublished - 2008
EventHydrometallurgy 2008: 6th International Symposium - Phoenix, AZ, United States
Duration: Aug 17 2008Aug 21 2008

Publication series

NameHydrometallurgy 2008: Proceedings of the 6th International Symposium


OtherHydrometallurgy 2008: 6th International Symposium
Country/TerritoryUnited States
CityPhoenix, AZ

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Metals and Alloys


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