Abstract: In the process for recovering gallium from aqueous, alkaline solutions by adsorption of the gallium on to bead-polymerized synthetic resins impregnated with 8-hydroxyquinolines and elution thereof with aqueous acids, the synthetic resins employed according to the invention are macroporous polydivinylbenzene or macroporous divinylbenzene copolymers which have been obtained by bead polymerization of divinylbenzene or mixtures of aromatic mono-, di- and/or trivinylbenzenes containing at least 50% by weight of divinylbenzene, in the presence of methyl isobutyl ketone, and which have been loaded with 160-190 g of Kelex 100 per liter of resin; in addition the resin is washed with sodium hydroxide solution after the elution step and before the commencement of each individual service cycle.
Type:
Grant
Filed:
April 13, 1989
Date of Patent:
July 24, 1990
Assignees:
Bayer Aktiengesellschaft, Ingal International Gallium GmbH
Inventors:
Alfred Mitschker, Peter M. Lange, Heiko Hoffmann, Gunter Lossmann, Andries P. van der Meer, Cornelius J. Smit