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The effect of electrode shape on the cell voltage of hall cells—II. Inert anodes

✍ Scribed by Paul J. Sides; Geoffrey A. Prentice

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
311 KB
Volume
33
Category
Article
ISSN
0013-4686

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✦ Synopsis

Calculated were current distributions on rectangular-wave inert anodes suspended over flat wetted cathodes in the Hall process for aluminum production. Also calculated was the cell voltage of each configuration. Designation of a region of lower conductivity adjacent to the anode simulated the presence of carbon dioxide bubbles. Cell voltages in all cases were less than the voltage of a cell having the same amount of gas spread uniformly over a flat plane. A voltage savings of 0.4 V was computed when the anode essentially consisted of narrow slots between surfaces 1.5 cm above the cathode. Voltage reduction can be substantial if the shape cut into the anode effectively removes gas from the interelectrode region.

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