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Determination of metal inventory and current efficiency in commercial aluminum reduction cells

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Abstract

A method for the determination of the metal inventory in commercial aluminum reduction cells, based on radioisotope dilution, has been developed, employing a198Au tracer. By taking a large number of samples from the cells, the current efficiency is evaluated from the slope of the cumulative metal inventory vs time data. The method allows a determination of the current efficiency over a period of 2 to 3 days with a relative precision of approximately 1 pct. The paper gives a thorough discussion of the sources of error inherent in the procedure suggested.

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Authors and Affiliations

  1. Institute of Inorganic Chemistry, Technical University of Norway, Trondheim, Norway

    Kai Grjotheim (Professor and Head), Conrad Krohn (Assistant Director of Studies) & Knut Tørklep (Research Associate)

  2. Institut für anorganische Chemie und Kernochemie, Kernreaktor, Johann Gutenberg Universitat, Mainz, Germany

    Roger Naeumann

Authors
  1. Kai Grjotheim
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  2. Conrad Krohn
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  3. Roger Naeumann
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  4. Knut Tørklep
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Formerly Research Associate at the same University.

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Grjotheim, K., Krohn, C., Naeumann, R. et al. Determination of metal inventory and current efficiency in commercial aluminum reduction cells. Metall Trans 2, 199–204 (1971). https://doi.org/10.1007/BF02662658

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  • DOI: https://doi.org/10.1007/BF02662658

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