Method and apparatus for producing metal by electrolytic reduction
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United States of America Patent
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Mar 27, 2018
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app pub date -
Dec 20, 2013
filing date -
Dec 24, 2012
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Abstract
A method is provided for producing metal by electrolytic reduction of a feedstock comprising an oxide of a first metal. The method comprises the steps of arranging the feedstock in contact with a cathode and a molten salt within an electrolysis cell, arranging an anode in contact with the molten salt within the electrolysis cell, and applying a potential between the anode and the cathode such that oxygen is removed from the feedstock. The anode comprises a second metal, which at the temperature of electrolysis within the cell is a molten metal. The second metal is a different metal to the first metal. Oxygen removed from the feedstock during electrolysis reacts with the molten second metal to form an oxide comprising the second metal. Thus, oxygen is not evolved as a gas at the molten anode.
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