Aluminium production cell design

Details Aluminium production cell design Aluminium production cell design

C - Chemistry, Metallurgy

25

C

C25C 3/08 (2006.01)

Patent

CA 2295497

A cell of advanced design for the production of aluminium by the electrolysis of an aluminium compound dissolved in a molten electrolyte, has a cathode (30) of drained configuration, and at least one non-carbon anode (10) facing the cathode both covered by the electrolyte (54). The upper part of the cell contains a removable thermic insulating cover (60) placed just above the level of the electrolyte (54). Preferably, the cathode (30) comprises a cathode mass (32) supported by a cathode carrier (31) made of electrically conductive material which serves also for the uniform distribution of electric current to the cathode mass (32) from current feeders (42) which connect the cathode carrier (31) to the negative busbars.

Cellule d'électrolyse, de conception perfectionnée, pour la production d'aluminium par électrolyse d'un composé d'aluminium dissous dans un électrolyte fondu, qui possède une cathode (30) de configuration drainée, et au moins une anode (10) non constituée de carbone qui fait face à la cathode, l'anode et la cathode étant couvertes par l'électrolyte (54). La partie supérieure de la cellule contient un couvercle d'isolation thermique (60) amovible placé juste au-dessus du niveau de l'électrolyte (54). La cathode (30) comporte de préférence une masse (32) reposant sur un support (31) constitué d'un matériau électriquement conducteur qui sert également à répartir uniformément le courant électrique dans la masse (32) de la cathode depuis des dispositifs d'alimentation (42) en courant qui connectent le support (31) de cathode aux barres omnibus négatives.

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