C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
204/43.45, 204/1
C25C 3/06 (2006.01)
Patent
CA 1181716
LOW DENSITY PARTICULATE CARBON ELECTRODE FOR REDUCTION OF ALUMINUM COMPOUND ABSTRACT OF THE DISCLOSURE One aspect of the present invention concerns an improved process for the electrolytic reduction of a metal from a metal compound and comprises the steps of providing a carbon cathode within a container, dissolving the metal compound in a molten salt electrolyte solvent bath which is disposed within the container, the molten electrolyte bath having a higher decomposition potential than the metal compound and having a lesser density than the reduced molten metal, and continuously providing a particulate, free-flowing, high purity, and highly conductive carbon material to the molten bath to serve as the anode, the particulate carbon material having a lesser density than the molten bath, placing an electrical connection in con- tact with the particulate carbon anode material and apply- ing an electric current thereto, and collecting reduced metal at the cathode. In another aspect of the present invention, a high purity and highly conductive, free-flowing particulate carbon material having a density lower than that of an electrolytic bath and floating thereon is provided to form the cell anode and in preferred embodiments is con- tinuously provided to the cell as the particulate carbon- aceous anode material is consumed.
381526
Meredith & Finlayson
Superior Graphite Company
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