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US 4,765,834 AGranted
Process for the recovery of metal values
AssigneeUnion Carbide Corporation
InventorsKavssery P. Ananthapadmanabhan, Errol D. Goddard
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Abstract
A process for the selective concentration of metal values in solution wherein said metal-containing solution is contacted with a multiple-phase system having a common solvent, thereby causing the preferential migration of metal values into one phase of said multiple-phase system. The phases of the system may then be isolated and the metal values recovered therefrom by conventional techniques.
Claims10
A process for the selective concentration of metal values present in aqueous solution comprising
- (a) contacting the aqueous metal-containing solution with an aqueous bi-phase system,
- (b) isolating the phases of said bi-phase system, and
- (c) recovering the metal values from at least one of said isolated phases, wherein said aqueous bi-phase system contains at least one functionalized polymeric material in an amount such that the concentration of metal values in one phase of the bi-phase system is enhanced, said functionalized polymeric material being a polyalkylene glycol, poly(oxyalkylene) polymer or poly(oxyalkylene) copolymer to which are bound functional groups selected from the group consisting of acrylate, sulfate, xanthate, oxime, phosphate and amine moieties.
Dependencies are inferred from the claim text.