METAL ELECTROWINNING ANODE AND ELECTROWINNING METHOD
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United States of America Patent
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Apr 11, 2017
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Dec 8, 2009
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Abstract
An electrowinning system is provided that is capable of suppressing accumulation of a side reaction product on an anode and a rise of an electrolysis voltage caused thereby, and an electrowinning method is provided using the system. To solve this problem, the electrowinning system of the present invention applies predetermined electrolysis current between an anode and a cathode placed in an electrolyte, thereby depositing a desired metal on the cathode, in which the electrolyte is a sulfuric acid-based or chloride-based solution containing ions of the metal, and the anode has a catalytic layer, containing amorphous iridium oxide or amorphous ruthenium oxide, formed on a conductive substrate.
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