Title:
【発明の名称】次ウラン酸アンモニウムの連続析出方法
Document Type and Number:
Japanese Patent JPS5932410
Kind Code:
B2
Abstract:
A continuous process is disclosed for precipitating uranium from an aqueous solution formed by the hydrolysis of uranium hexafluoride gas. Undersized ammonium diuranate particles are formed in a first container by mixing the aqueous solution and an ammonium hydroxide solution containing about 10 to about 30% by weight ammonium. The ratio of the two solutions should be such that there are about 20 to about 30 moles of ammonium per mole of uranium. The temperature is maintained at about 30 DEG to about 50 DEG C. and the residence time in the first container is about 14 to about 57 seconds. The slurry is then transported to a second container for further particle growth where it is agitated at a temperature of about 20 DEG to 40 DEG C. for a residence time of about 2 to about 9 minutes. The resulting ammonium diuranate precipitate has a surface area of about 10 to about 20 meters squared per gram. The precipitate can then be calcined and pressed into pellets.
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Inventors:
PIITAA TAOOII CHANGU
ERITSUKU UIRUHERUMU TAIPERU
ERITSUKU UIRUHERUMU TAIPERU
Application Number:
JP186482A
Publication Date:
August 08, 1984
Filing Date:
January 11, 1982
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CO
International Classes:
C01G43/00; C01G43/025; C22B60/02; (IPC1-7): C01G43/00
Attorney, Agent or Firm:
Soga Doteru