Carbone Savoie

Jean-Michel Dreyfus

Regis Paulus

The invention relates to an electrolytic cell for obtaining aluminum, including a pot shell, at least one cathode block arranged at least partially in the pot shell, at least one anode suspended above the cell and dipping into the upper portion of the electrolytic cell, and an insulation at least partially covering the internal surface of the pot shell and located between the cathode block and the pot shell, the pot shell and the elements that it contains delimiting a crucible intended to receive an electrolytic bath in contact with the cathode block, characterized in that the insulation is at least partially made of carbon-based blocks having a heat conductivity lower than 1 W/m/K.

Electrolytic cell for obtaining aluminium

This cathode ( ) contains, within the pores in its structure, a carbon-containing product fired at a temperature of less than 1600&deg; C., improving the erosion resistance by protecting the graphitized binder.

Impregnated graphite cathode for the electrolysis of aluminium

In this cathode, which is a single block, the electrical resistivity is heterogeneous along its longitudinal axis, this resistivity being higher in the end regions of the cathode ( ) than in the central region of the latter.

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Lyons, France

Jean-Michel Dreyfus