Stability of iridium anode in molten oxide electrolysis for ironmaking: Influence of slag basicity

Hojong Kim, James Paramore, Antoine Allanore, Donald Robert Sadoway

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

7 Scopus citations

Abstract

Molten oxide electrolysis (MOE) is a carbon-neutral, electrochemical technique to decompose metal oxide directly into liquid metal and oxygen gas upon use of an inert anode. What sets MOE apart from other technologies is its potential environmental advantage of no greenhouse gas emissions. Therefore, the primary challenge for carbon-free molten oxide electrolysis is the development of an inert anode. In the quest for an inert anode that can sustain the aggressive conditions of the process, iridium has been evaluated in two different slags for ironmaking. The basicity of the electrolyte proves to have a dramatic effect on the stability of the iridium anode, where iridium corrosion in an acidic slag with high silica content is less pronounced than the corrosion rate in a basic slag with high calcia content.

Original languageEnglish (US)
Title of host publicationMolten Salts and Ionic Liquids 17
Pages219-230
Number of pages12
Edition7
DOIs
StatePublished - Dec 1 2010
Event17th International Symposium on Molten Salts and Ionic Liquids - 218th ECS Meeting - Las Vegas, NV, United States
Duration: Oct 10 2010Oct 15 2010

Publication series

NameECS Transactions
Number7
Volume33
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other17th International Symposium on Molten Salts and Ionic Liquids - 218th ECS Meeting
CountryUnited States
CityLas Vegas, NV
Period10/10/1010/15/10

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Kim, H., Paramore, J., Allanore, A., & Sadoway, D. R. (2010). Stability of iridium anode in molten oxide electrolysis for ironmaking: Influence of slag basicity. In Molten Salts and Ionic Liquids 17 (7 ed., pp. 219-230). (ECS Transactions; Vol. 33, No. 7). https://doi.org/10.1149/1.3484779