Published 1985 | Version v1
Miscellaneous Open

Uranium reextraction from D2EHPA-TOPO solvent

Creators

  • 1. Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte (Brazil)

Description

A comparative study for recovering uranium from the solvent D2EHPA-TOPO (di-2-ethyl hexyl phosphoric acid - tri-n-octyl phosphine oxide) with ammonium carbonate and sodium carbonate solutions has been made. The paper discusses the precipitation of iron during stripping and the extracctant solubilization in the aqueous phases. Continuous tests showed that uranium is efficiently stripped from the solvent by using both solutions and that the choice of a specific system is dependent on the uranium precipitation mechanism to be employed. (Author)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (Portuguese)

Foi feito um estudo de reextracao de uranio contido no solvente D2EHPA-TOPO (acido di-2-etil hexil fosforico - oxido de tri-n-octil fosfina), atraves de solucoes de carbonato de amonio e carbonato de sodio. Foram discutidos os fenomenos de precipitacao de ferro no circuito e solubilizacao do extratante nas fases aquosas. Testes continuos mostraram que ambas solucoes eficientemente reextraem uranio do solvente, mas a escolha do sistema de reextracao dependera do mecanismo de precipitacao de uranio a se adotar. (Autor)

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Additional details

Additional titles

Original title (Portuguese)
Reextracao de uranio do solvente D

Publishing Information

Imprint Pagination
7 p.
Report number
INIS-BR--775

Conference

Title
11. National Meeting of Mineral Treatment and Hydrometallurgy.
Dates
23-25 Oct 1985.
Place
Natal, RN (Brazil).

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
18075885
Subject category
S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
AMMONIUM CARBONATES; COMPARATIVE EVALUATIONS; EXPERIMENTAL DATA; EXTRACTION APPARATUSES; HDEHP; IRON; PRECIPITATION; QUANTITY RATIO; SODIUM CARBONATES; SOLUBILITY; SOLVENT EXTRACTION; URANIUM
Descriptors DEC
ACTINIDES; ALKALI METAL COMPOUNDS; AMMONIUM COMPOUNDS; CARBON COMPOUNDS; CARBONATES; DATA; ELEMENTS; EQUIPMENT; ESTERS; EVALUATION; INFORMATION; METALS; NUMERICAL DATA; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; SEPARATION EQUIPMENT; SEPARATION PROCESSES; SODIUM COMPOUNDS; TRANSITION ELEMENTS