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JOM

, Volume 22, Issue 11, pp 30–36 | Cite as

The Attainment of High Current Efficiency on Aluminum Reduction Furnaces by a Cold Running Technique

  • J. H. Kent
Technical Article
  • 6 Downloads

Abstract

For any given design of aluminium reduction furnace, there is a maximum current efficiency at which it can be made to operate. This maximum can be as high as 95%. Research work is described which was carried out in Scotland in the first part of the last decade to determine those conditions and methods of operation which are necessary to achieve maximum current efficiency. The method became known as the cold running technique. The lessons learned during the period, when the technique was introduced throughout the two smelters at which it was developed (thereby setting 88–90% current efficiency as the overall average norm) are of value when considering the future of the aluminium reduction process. In particular, the state of the art for the foreseeable future is such that no automated system can be envisaged in practical terms that will obviate the need for reduction furnace operators on the factory floor who are thoroughly experienced in practising the described technique, in order to make an aluminium smelter yield its maximum profit.

Keywords

Current Efficiency Electromagnetic Force Aluminium Reduction High Current Efficiency Current Effi 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    Pearson, T. G., and Waddington, J.; Discussions of Faraday Society, 1947, no. 1, p. 318.Google Scholar
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    Kent, J. H.; Journal of the Electrochemical Society, Vol. 105, No.10, October 1958, p. 606.CrossRefGoogle Scholar
  3. 3.
    Pearson, T. G.; “The Chemical Background of the Aluminum Industry”, The Royal Institute of Chemistry Lectures, Monographs, and Reports, no. 3, 1955, p. 43.Google Scholar

Copyright information

© The Minerals, Metals & Materials Society 1970

Authors and Affiliations

  • J. H. Kent
    • 1
  1. 1.Lochaber Works of the British Aluminum Company, Ltd.Fort WilliamScotland

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