The FLASHCAL Process for the Fabrication of Fuel-Metal Oxides Using the Whiteshell Roto-Spray Calciner
| Autor: | T. Sampat Sridhar |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
Nuclear and High Energy Physics
Precipitation (chemistry) 020209 energy Inorganic chemistry Oxide chemistry.chemical_element 02 engineering and technology Uranium Condensed Matter Physics Chemical reaction Plutonium law.invention chemistry.chemical_compound 020303 mechanical engineering & transports 0203 mechanical engineering Nuclear Energy and Engineering chemistry Chemical engineering law 0202 electrical engineering electronic engineering information engineering Calcination Pyrolysis Filtration |
| Zdroj: | Nuclear Technology. 80:451-461 |
| ISSN: | 1943-7471 0029-5450 |
| DOI: | 10.13182/nt88-a34069 |
| Popis: | A one-step, continuous, thermochemical calcination process, called the FLASHCAL (Flash Calcination) process has been developed for the production of single- and mixed-oxide powders of fuel metals (uranium, thorium and plutonium) from the respective nitrate solutions using the Whiteshell Roto-Spray Calciner (RSC). The metal-nitrate feed solution, either by itself or mixed with a suitable chemical reactant or additive, is converted to its oxide powder in the RSC at temperatures between 300 and 600/sup 0/C. Rapid denitration takes place in the calciner, yielding the metal-oxide powders while simultaneously destroying any excess chemical additive and reaction by-products. In the production of precursor oxide powders suitable for fuel fabrication, the FLASHCAL process has advantages over batch calcination and other processes that involve precipitation and filtration steps because fewer processing and handling operations are needed. Results obtained with thorium nitrate and uranium nitrate-thorium nitrate mixtures indicate that some measure of control over the size distribution and morphology of the oxide product powders is possible in this process with the proper selection of chemical additive, as well as the operating parameters of the calciner. |
| Databáze: | OpenAIRE |
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