PROCESS FOR RECOVERING GALLIUM

摘要

In the process for recovering gallium from aqueous, alkaline solutions by adsorption of the gallium on to bead-polymerised synthetic resins impregnated with 8hydroxyquinolines 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 polymerisation 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 litre 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.