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Ohmic interelectrode voltage drop in alumina reduction cells

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Abstract

The large gas bubbles underneath the anode in Hall–Héroult cells not only affect the ohmic interelectrode resistance by decreasing the cross-sectional area available for current transport. They also exhibit a strong effect on the current distribution in the bubble-free layer, substantially increasing the resistance. Available relationships applied in aluminium industry do not take this effect into account. A review on attempts to describe the interelectrode resistance is given, and an improved relationship derived from a finite element model is presented.

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Authors and Affiliations

  1. TFH Berlin, University of Applied Sciences, D-13353, Berlin, Germany

    H. Vogt & H.-D. Kleinschrodt

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  1. H. Vogt
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  2. H.-D. Kleinschrodt
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Correspondence to H. Vogt.

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Vogt, H., Kleinschrodt, HD. Ohmic interelectrode voltage drop in alumina reduction cells. Journal of Applied Electrochemistry 33, 563–569 (2003). https://doi.org/10.1023/A:1024959807438

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