Aluminum cell with gas conduit through anode with upper...

Details Aluminum cell with gas conduit through anode with upper... Aluminum cell with gas conduit through anode with upper...

C - Chemistry, Metallurgy

25

C

204/142, 204/49.

C25C 3/06 (2006.01) C25C 3/12 (2006.01) C25C 3/20 (2006.01)

Patent

CA 1208598

ABSTRACT In the production process of aluminum by electrolytic- ally reducing the alumina which is dissolved in a fused fluoride salt mainly composed of cryolite, the present inven- tion aims to reduce the cell voltage and/or to increase the inter-electrode distance of an aluminum electrolytic cell with the self baking type electrode in order to reduce the electric power consumption. The present invention also provides the apparatus to measure to eliminate the anode effect automatically. This aim is achieved by introducing a gas to the lower surface of the carbon anode being in contact with the elec- trolytic bath, via at least one passage passing in an essen- tially vertical direction through the carbon anode.

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