METHOD OF RECOVERING URANIUM FROM NUCLEUS FUEL SCRAP

Title:

METHOD OF RECOVERING URANIUM FROM NUCLEUS FUEL SCRAP

Document Type and Number:

Japanese Patent JPS61236615

Kind Code:

A

Abstract:

PURPOSE: To recover effectively uranium excellent in the purity by dissolving the nucleus fuel scrap contg. Gd2O3 in a mineral acid to solvent-extract uranium, washing an organic phase contg. uranium and thereafter back-extracting it with an aqueous system.

CONSTITUTION: The nucleus fuel scrap contg. Gd2O3 is dissolved in a mineral acid such as nitric acid added with NaNO3. A solvent such as tributylphosphate is added to this soln. to solvent-extract uranium. The organic phase contg. utanium is washed with water or dilute nitric acid to transfer Gd content or the like to an aqueous phase. In this washing, the volume ratio of aqueous phase/organic phase is regulated to ≤1/10. Uranium is back-extracted from the washed organic phase by using water or dilute mineral acid. In this way, uranium can be recovered in the excellent purity.

Inventors:

TANAKA CHUZABURO
YAMA TERUYOSHI
MIYAJIMA YOSHIKI

Application Number:

JP7621285A

Publication Date:

October 21, 1986

Filing Date:

April 10, 1985

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SUMITOMO METAL MINING CO

International Classes:

C22B60/02; C01G43/00; G21C3/62; G21C19/48; G21F9/34; (IPC1-7): C01G43/00; C22B60/02; G21F9/34

Domestic Patent References:

JPS59141426A	1984-08-14
JPS5924732A	1984-02-08

Attorney, Agent or Firm:

Nakamura Katsunari

Previous Patent: MANUFACTURE OF CRYSTALLINE AMMONIUM METATUNGSTATE

Next Patent: PRODUCTION OF HIGH-QUALITY IRON OXIDE