Ohmic interelectrode voltage drop in alumina reduction cells

Vogt, H.; Kleinschrodt, H.-D.
July 2003
Journal of Applied Electrochemistry;Jul2003, Vol. 33 Issue 7, p563
Academic Journal
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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