Process for recovering gallium

Details Process for recovering gallium Process for recovering gallium

C - Chemistry, Metallurgy

22

B

53/166

C22B 58/00 (2006.01) C22B 3/28 (2006.01)

Patent

CA 1132802

ABSTRACT OF THE DISCLOSURE The invention provides a process for recovering gallium from calcined clay leached with hydrochloric acid. The leach solution containing aluminum, ferric and gallium chlorides is treated by ion exchange to first remove aluminum ions, follow- ing which the solution containing ferric and gallium chlorides is treated to reduce the ferric ions to ferrous ions. The reduced solution is acidified with hydrochioric acid sufficiently to in- sure that the gallium is present in the form GaCl4- ions, and is then again treated by ion exchange to separate the ferrous ions from the gallium for ultimate recovery of the latter.

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