Floyd L Tewksbury

US Patent:

42750377, Jun 23, 1981

Filed:

Dec 26, 1978

Appl. No.:

5/973268

Inventors:

David J. Friedland - Snyder NY
Floyd L. Tewksbury - Williamsville NY
Martin A. Robinson - East Amherst NY

Assignee:

Allied Chemical Corporation - Morris Township, Morris County NJ

International Classification:

C01G 4300

US Classification:

423 8

Abstract:

Certain metals, and especially uranium, are recovered from an organic solvent by stripping with an aqueous solution containing polymeric phosphates under conditions in which the polymeric phosphate does not quickly hydrolize and metal preferentially dissolves in the aqueous solution. The metal may then be recovered from the aqueous solution by hydrolizing the polymeric phosphates and either precipitating the metal or reextracting the metal at higher concentrations with an organic solvent containing extractants.