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On convection in aluminum reduction cells

  • Process Metallurgy
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Abstract

The convection pattern in the bath electrolyte and the cathode metal of 150 kamp prebaked anode aluminum reduction cells has been studied by means of radioactive tracers. The initial distribution of the tracers—24Na for the bath and198Au for the metal phase-indicates a fast circulating movement with vortices at the ends in both phases. Circulation rates up to 100 cm per sec were observed, and an average value seemed to be 10 cm per sec. The implications of the convection on the mechanism of the secondary reactions, the dissolution of alumina in the bath electrolyte and the distribution of carbon particles in the cell are discussed.

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Authors and Affiliations

  1. Technical University of Norway, Trondheim, Norway

    Kai Grjotheim, Conrad Krohn, Roger Naeumann & Knut Tørklep

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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Grjotheim, K., Krohn, C., Naeumann, R. et al. On convection in aluminum reduction cells. Metall Trans 1, 3133–3141 (1970). https://doi.org/10.1007/BF03038429

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  • DOI: https://doi.org/10.1007/BF03038429

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