The Creation of a Uranium Oxide Industry, from the Laboratory Stage to a Pilot Plant; CREATION D'UNE INDUSTRIE DE L'OXYDE D'URANIUM DU LABORATOIRE A L'USINE PILOTE
The physico-chemical features were studied of the phenomena accompanying the calcination of uranium peroxide or ammonium uranate to give uranium trioxide, and the subsequent reduction to dioxide as well as the sintering of the powders obtained. This work made it possible to prepare powder of known specific surface area, and to show the overriding influence of mis factor, all other things being equal, on the behavior of powders during sintering in a hydrogen atmosphere. The work led to defining two methods for sintering stoichiometric uranium oxide of high density. The technological study of the preparation of the powder and its industrial production are carried out at the plant of Le Bouchet which produces at the moment powders of known characteristics suitable for sintering in hydrogen at 1650 deg C without prior grinding. The industrial sintering is carried out in a pilot plant having a capacity of 25 metric tons/year, which operated since May 1958. (auth)
- Research Organization:
- France. Commissariat a l'Energie Atomique. Centre d'Etudes Nucleaires, Saclay
- NSA Number:
- NSA-15-022352
- OSTI ID:
- 4043815
- Report Number(s):
- CEA-1670
- Country of Publication:
- France
- Language:
- English
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