Adapting Modern Industrial Operation Parameters in a Standardized Laboratory Cell for Measuring Current Efficiency for Aluminium Deposition: Unexpected Challenges and Lessons Learned

R. Meirbekova, O. Awayssa, G. M. Haarberg, G. Saevarsdottir

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

Abstract

“Current efficiency” is an important cell parameter which shows how efficiently current is used to produce aluminium. Operational parameters that affect current efficiency have been widely studied in the aluminium industry, and factors like electrolyte composition and superheat have been changed to improve the current efficiency. However, the industrial cell is a complex system where all parameters are closely interrelated, which makes it difficult to change any parameter independently. Sterten and Solli developed a laboratory cell specifically designed to study current efficiency. Many studies have been made using the cell to study the effect of various operational parameters on current efficiency. As a result of improved understanding, the operational parameters presently used by the industry have changed, which is reflected by new operating condition standards for the laboratory cell. This study focuses on the challenges faced when implementing new standards in the current efficiency laboratory cell; these standards (11.5% AlF3, 5% CaF2, 4% Al2O3, cryolite ratio 2.2, temperature 965 °C) are comparable to typical parameters in the aluminium industry today.

Original languageEnglish
Title of host publicationLight Metals 2020
EditorsAlan Tomsett
PublisherSpringer Science and Business Media Deutschland GmbH
Pages637-643
Number of pages7
ISBN (Print)9783030364076
DOIs
Publication statusPublished - 2020
Externally publishedYes
EventLight Metals Symposium held at the 149th Annual Meeting and Exhibition, TMS 2020 - San Diego, United States
Duration: Feb 23 2020Feb 27 2020

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

ConferenceLight Metals Symposium held at the 149th Annual Meeting and Exhibition, TMS 2020
Country/TerritoryUnited States
CitySan Diego
Period2/23/202/27/20

Keywords

  • Alumina reduction
  • Current efficiency

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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