Method of recovering valuable metal from scrap conductive oxide
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United States of America Patent
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Apr 1, 2014
Grant Date -
Apr 29, 2010
app pub date -
Feb 8, 2008
filing date -
Feb 16, 2007
priority date (Note) -
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Abstract
Proposed is a method of recovering valuable metal from scrap containing conductive oxide including the steps of using scrap containing conductive oxide and performing electrolysis while periodically inverting the polarity, and recovering the scrap as hydroxide. With the foregoing method of recovering valuable metal from scrap containing conductive oxide, oxide system scrap is conductive oxide and a substance that can be reduced to metal or suboxide with hydrogen. This method enables to efficiently recover valuable metal from sputtering target scrap containing conductive oxide or scrap such as mill ends of conductive oxide that arise during the production of such a sputtering target.
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