Recovery of gallium

Details Recovery of gallium Recovery of gallium

C - Chemistry, Metallurgy

22

B

53/166

C22B 58/00 (2006.01)

Patent

CA 1062017

ABSTRACT OF DISCLOSURE This invention relates to the recovery of gallium from scrubber dust containing aluminium and fluoride. In carrying out the process of the invention gallium is recovered from a particulate solid of the basic material by means of a process comprising the following steps:- (a) preparing a mixture of the solid with an excess of an alkali; (b) sintering the said mixture; (c) leaching the sintered product obtained with an aqueous solution; (d) cementation of the gallium present in the resulting aqueous solution with a metal more electropositive than gallium; and (d) collecting the solid gallium precipitate obtained by cementation.

236445

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