Published May 23, 1986 | Version v1
Patent Metadata-only

Process for the recovery of uranium as UF4 from phosphated solutions

Creators

Description

Uranium in solution is reduced at the tetravalent state, extracted by organic solvents (mono or dialkyphenylphosphoric acid alkylpyrophosphoric acid diluted by a hydrocarbon) and reextracted by diluted hydrofluoric acid. The emulsion obtained is separated from the desuraniated solvent which is recycled after addition of pure solvent. The process is characterized by introduction of UF4 during reextraction by HF reducing solvent consumption

Availability note (English)

Available from Institut National de la Propriete Industrielle, Paris (France).

Abstract (French)

Le procede comporte les etapes suivantes: reduction de l'uranium contenu dans la solution a l'etat tetravalent; extraction dudit uranium au moyen d'un solvant organique appartenant au groupe constitue par les melanges d'acide mono et dialkylphenylphosphoriques et les acides alkylpyrophosphoriques dilues dans un hydrocarbure; reextraction de l'uranium par une solution aqueuse d'acide fluorhydrique; separation du solvant desuranie de l'emulsion formee et recyclage a l'extraction avec un appoint de solvant pur. Ce procede est caracterise en ce que l'on introduit de l'UF4 dans la solution de reextraction reduisant ainsi la consommation de solvant

Additional details

Additional titles

Original title (French)
Procede de recuperation sous forme de fluorure tetravalent de l'uranium extrait de solutions phosphatees

Publishing Information

Imprint Pagination
13 p.
IPC:
Int. Cl. C01g43/06; B01d11/04; C01b25/237.
IPC
Int. Cl. C01g43/06; B01d11/04; C01b25/237.
Patent number
FR patent document 2573415/A/

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
18030882
Subject category
S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
PHOSPHORIC ACID; SOLVENT EXTRACTION; SOLVENTS; URANIUM; URANIUM TETRAFLUORIDE
Descriptors DEC
ACTINIDE COMPOUNDS; ACTINIDES; ELEMENTS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; METALS; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; SEPARATION PROCESSES; URANIUM COMPOUNDS; URANIUM FLUORIDES

Optional Information

Secondary number(s)
FR patent application 8417993.