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AbstractAbstract
[en] The main production processes of uranium hexafluoride in pilot plants and industrial facilities are described. The known reactions confirmed in laboratory experiments that lead to Uf6 or other intermediate fluorides are discussed. For the purpose of determining a thermodinamically feasible reaction involving the sulfur hexafluoride as fluorinating agent, a mock-up facility was designed and constructed as a part of the R and D work planned at the CDTN (Nuclebras Center for Nuclear Technology Development). IN the uranium tatrafluoride synthesis employing U3O8 and SF6 several experimental parameters are studied. The reaction time, gasflow, temperature and stoechiometic relations among reagents are described in detail. (Author)
[pt]
Descrevem-se os principais processos de producao do hexafluoreto de uranio em instalacao piloto e industrial. Discutem-se tambem as reacoes que levam ao UF6 ou a algum outro fluoreto intermediario, de obtencao comprovada em escala de laboratorio. Projetou-se e construiu-se uma instalacao da laboratorio no CDTN (Centro de Desenvolvimento da Tecnologia Nuclear de Nuclebras) para a verificacao experimental de uma nova reacao, termodinamicamente viavel, que emprega como fluroretante o hexafluoreto de enxofre. Discrevem-se detalhademente parametros experimentais tais como vazao de gas, temperaturas, relacoes estequiometricas dos reagentes e tempo de reacao na sintese do tetrafluoreto de uranio, atraves da reacao entre SF6 e U3O8. (Autor)Original Title
Estudo de reacoes para producao de tetrofluoreto de uranio e hexafluoreto de uranio
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1985; 114 p
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