Purification of solutions of gallium values by serial ion exchan

Details Purification of solutions of gallium values by serial ion exchan Purification of solutions of gallium values by serial ion exchan

1981-11-30

1983-09-13

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

75101BE, C01G 1500

Patent

active

044041748

ABSTRACT:
Highly pure (>99.99%) aqueous solutions of gallium chloride are obtained by a process having two major stages. The first stage, effected by passage of an aqueous acid solution containing gallium over a strongly basic ion exchange resin, makes it possible to eliminate an appreciable quantity of metal ions, such as Ca, Mg, Cr, V, Co, Zn and Pb, and further serves to concentrate the initial solution. In the second stage, the remaining ions, such as Al, Na and particularly Fe.sup.+++ are eliminated by a two-phase extraction with an organic extractant, preferably a C.sub.4 to C.sub.10 alcohol or a quaternary ammonium chloride.

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