Electrolytic reduction cells for aluminium production

Details Electrolytic reduction cells for aluminium production Electrolytic reduction cells for aluminium production

C - Chemistry, Metallurgy

25

C

204/151

C25C 3/08 (2006.01) C25C 3/16 (2006.01)

Patent

CA 1216254

A B S T R A C T In conventional electrolytic cells for aluminium production, heat loss through the side walls is necessary to cause the formation of a protective layer of solid electrolyte. In this invention, the side walls are lined with a ceramic material, e.g. titanium diboride, resistant to the electrolyte and to molten aluminium. Thermal insulation is provided such that a layer of solid electrolyte is not present during normal operation of the cell. A cathode current collection system is provided such that the horizontal lateral currents in the cathode are insignificant compared with the vertical current.

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