DESCRIPTION OF AN INSTALLATION FOR THE PRODUCTION OF URANIUM TRIOXIDE BY CALCINATION IN FLUIDIZED BED OF SOLUTIONS OF URANYL NITRATE (in Spanish)
The process is based on the almost instantaneous evaporation of saline solutions and the decomposition to the oxide, as rapidly as possible, of salts. These solutions are pulverized on preexistent particles of the corresponding oxides, maintained in great agitation and movement at the interior of a heated fluidized bed. Air is used as a fluidizing medium and is kept at temperatures between 300 and 350 deg C. The aims of the process are to obtain a uranium oxide with sufficient reactivity for subsequent processes and require an adequate control of the size of the oxide particles produced (80 to 400 microns). The essential parts of the calcination process are: the reactor;, preheating of the fluidizing air; equipment for gas filtration; pulverizing system, a uranyl nitrate solution feed system; and oxide product collector. The pulverization system is the critical component of the system, and its production capacity is 350 kg/hr m/sup 2/ of an oxide of highly spherical particles. An evaporator to concentrate the uranyl nitrate solutions fed to the calcinator, and an absorber of the gases produced in the calcination complete the equipment. (tr-auth)
- Research Organization:
- Junta de Energia Nuclear, Madrid
- NSA Number:
- NSA-17-040911
- OSTI ID:
- 4632968
- Journal Information:
- Energia Nucl. (Madrid), Journal Name: Energia Nucl. (Madrid) Vol. Vol: 7: No. 26
- Country of Publication:
- Country unknown/Code not available
- Language:
- Spanish
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