Treatment of indium gallium alloys and recovery of indium...

Details Treatment of indium gallium alloys and recovery of indium... Treatment of indium gallium alloys and recovery of indium...

C - Chemistry, Metallurgy

22

B

C22B 58/00 (2006.01)

Patent

CA 2721518

There is provided a hydrometallurgical process of recovering indium and gallium values from mixtures thereof with other metal values for example recycled and scrap solar panel cells which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably via the simultaneous addition of sulfuric acid and hydrogen peroxide to the leach vessel, so as to form indium and gallium salt species of at least the major proportion of the indium and gallium values in the mixture, extracting the indium and gallium values with an organic extractant by adjusting the pH so as to extract individually the indium and gallium values with the organic extractant, stripping indium and gallium values from the extractant using an acid and an alkaline solution respectively and recovering the indium and gallium values.

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