METHOD FOR RECOVERING METALS FROM TUNGSTEN-CONTAINING METALLIC MATERIAL
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United States of America Patent
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Aug 24, 2023
app pub date -
Jul 7, 2022
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Feb 18, 2022
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Abstract
A method for recovering metals from tungsten-containing metallic materials includes the steps of: providing a cathode and the tungsten-containing metallic material as an anode in an electrolyte solution which has a neutral, acidic or basic pH value; and subjecting the tungsten-containing metallic material to an electrolysis process under a power density that is greater than 3 W/cm2 on the anode so that a passivation layer formed on the anode during the electrolysis process is broken down to permit the tungsten-containing metallic material to be continuously dissolved and oxidized, and a tungsten-containing compound is formed in the electrolyte solution.
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