| 摘要 |
<p>A method of recovering a valuable metal from ITO scrap, characterized in that electrolysis under periodic inversion of polarity is carried out with the use of an insoluble electrode as either an anode or a cathode and with the use of a scrap containing a conductive oxide as the opposite cathode or anode employed as the electrode counter thereto to thereby attain recovery of the scrap as a hydroxide. Further, there is provided a method of recovering a valuable metal from a scrap containing a conductive oxide, characterized in that the oxide scrap is a conductive oxide being a substance reducible by hydrogen to a metal or suboxide. By the method, a valuable metal can be efficiently recovered from scraps containing a conductive oxide, such as a sputtering target containing a conductive oxide and target end materials occurring in production process.</p> |
