Title:
METHOD OF STRIPPING URANIUM FROM ALKYL PYROPHOSPHORIC ACID
Document Type and Number:
Japanese Patent JPS57200226
Kind Code:
A
Abstract:
A process is described for the recovery of tetravalent uranium from wet-process phosphoric acid utilizing an alkyl pyrophosphoric acid extractant or the like. After extracting the tetravalent uranium from wet-process acid, iron is stripped from the pregnant extractant into an oxalic acid stripping solution and then the tetravalent uranium is stripped from the pregnant extractant into an oxalate stripping solution. The oxalate stripping solution is an aqueous solution of an alkali metal or ammonium oxalate. The barren extractant is recycled for contacting with fresh wet-process acid. The uranium is oxidized and then precipitated in the oxalate stripping solution. The precipitated solids are separated from the solution, and the uranium is dried to a UO3 product.
Inventors:
RARUFU ERITSUKU WASHINTON
ARETSUKUSU MAGUDEITSUKUSU
ARETSUKUSU MAGUDEITSUKUSU
Application Number:
JP8783282A
Publication Date:
December 08, 1982
Filing Date:
May 24, 1982
Export Citation:
Assignee:
PRODECO INC
International Classes:
C01B25/238; C01G43/00; C22B60/02; B01D11/04; C01G; (IPC1-7): B01D11/04; C01B25/234; C01G43/00