Process for the electrolytic reduction of metals and an improved particulate carbon electrode for the same
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United States of America Patent
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Oct 11, 1983
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N/A
app pub date -
Jun 30, 1980
filing date -
Jun 30, 1980
priority date (Note) -
Expired
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Abstract
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 contact with the particulate carbon anode material and applying 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 continuously provided to the cell as the particulate carbonaceous anode material is consumed.
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