Published 1984 | Version v1
Miscellaneous Open

Study for the extraction of uranium from commerical phosphoric acid

Description

The extraction of uranium is discribed and for which several parameters such as choice of the extracting agent, uranium oxidation, temperature, phase volume ratio, equilibrium time and number of stages are studied. A synergic mixture constituted by 0,5M DZEHPA/0,125M TOPO in kerosene is used as extracting agent. The uranium extraction is performed by using both batch process and continuous as well as discontinuous counter-current and processes in bench scale. An overall yield of 96% is obtained when the extraction experiment is performed at 450C in a 5-stage continuous extraction process. (Author)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (Portuguese)

Estuda-se a otimizacoes dos parametros de extracao de uranio entre eles a definicao do sistema extrator oxidacao do uranio, influencia da temperatura, determinacao da relacao de fases, tempo de equilibrio e numero de estagios, tomando como base os processos de extracao com acidos dialquilfosforicos. Realizou-se o estudo de extracao em escala de laboratorio, usando camaras de extracao nos experimentos em psendo contra-corrente e misturadores-decantadores do tipo Pump-Mix no processo continuo. Usou-se como agente extrator a mistura sinergica DZEHPA 0,5M/TOPO 0,125M em querosene. Obteve-se processo de extracao continua realizada a 450C, para cinco estagios de equilibrio, um rendimento de 96%. (Autor)

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Additional details

Additional titles

Original title (Portuguese)
Estudo para extracao de uranio em acido fosforico comercial

Publishing Information

Imprint Pagination
141 p.
Report number
INIS-BR--571

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
18008107
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Thesis
Descriptors DEI
BENCHMARKS; EXTRACTION APPARATUSES; PHOSPHORIC ACID; SOLVENT EXTRACTION; URANIUM
Descriptors DEC
ACTINIDES; ELEMENTS; EQUIPMENT; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; METALS; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; SEPARATION EQUIPMENT; SEPARATION PROCESSES