Process for extracting gallium from bayer liquors using an impre

Details Process for extracting gallium from bayer liquors using an impre Process for extracting gallium from bayer liquors using an impre

1993-04-13

1995-06-13

Bos, Steven

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423DIG14, C22B 5800

Patent

active

054240506

ABSTRACT:
The invention also relates to a method of recovering the gallium contained in an aqueous solution of strongly alkaline sodium aluminate by chemical exchange between a stationary phase consisting of a microporous adsorbent resin impregnated with 7-(alkyl or alkenyl)-8-hydroxyquinoline and the aqueous phsae of sodium aluminate. According to the invention, the dry resin prior to its impregnation has a specific surface area measured by the BET method which is at least equal to 450 sq.m/g of resin, a pore volume at least equal to 1500 cu.mm/g of resin, a mean pore diameter comprised between 80 and 500 .ANG. with at least 80% of this volume consisting of pores with a diameter comprised between 40 and 5000 .ANG., a rate of expansion of swelling in an aqueous medium which does not exceed 20% and in that it is impregnated with 7-(alkyl or alkenyl)-8-hydroxyquinoline in the proportion of 250 to 350 g/liter of dry resin.

REFERENCES:
patent: 3637711 (1972-01-01), Budde, Jr. et al.
patent: 4220726 (1980-09-01), Warshawsky
patent: 4631177 (1986-12-01), Yotsuyanagi et al.
patent: 4865823 (1989-09-01), Minagawa et al.
patent: 5102512 (1992-04-01), Lamerant
Chemical Abstracts, vol. 99: 6483a p. 6486 (1983).
Macroporous Resins as Supports for a Chelating Liquid Ion Exchanger (Parish Analytical Chem. vol. 49 Jul. 1977).
Chemical Abstracts vol. 110 : 215653r p. 168 (1989).

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