Published October 2, 1987 | Version v1
Patent Metadata-only

Fabrication process for sintered mixed oxides soluble in nitric acid from nitrate solutions

Creators

Description

Mixed oxide nuclear fuels are obtained by mixing the nitrate solutions, concentration, heat treatment for an intermediary mixed oxide containing U(VI) and Pu(IV or VI), calcination to obtain U3O8, reduction in U(IV) and Pu(IV), pelletizing, sintering and machining. Less wastes are produced and the fuel pellets are soluble in nitric acid

Availability note (English)

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

Abstract (French)

On decrit un procede de fabrication dans lequel on melange les solutions de nitrates, on concentre, on prepare un oxide mixte intermediaire de Pu(IV ou VI) et U(VI), on calcine pour obtenir U3O8, on reduit pour avoir U et Pu a l'etat(IV), on met en forme par pressage puis on fritte et rectifie. Ce procede produit moins de dechet et les pastilles de combustible sont solubles dans l'acide nitrique

Additional details

Additional titles

Original title (French)
Procede d'obtention d'oxydes mixtes frittes solubles dans l'acide nitrique a partir de solutions de nitrates
Augmented title (English)
nuclear fuels

Publishing Information

Imprint Pagination
22 p.
IPC:
Int. Cl. C01g56/00; C01g43/01; C04b35/51; G21c3/62.
IPC
Int. Cl. C01g56/00; C01g43/01; C04b35/51; G21c3/62.
Patent number
FR patent document 2596384/A/

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
19066297
Subject category
S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
FABRICATION; FUEL PELLETS; MIXED OXIDE FUELS; NITRATES; PELLETIZING; SINTERING; SOLUBILITY
Descriptors DEC
ENERGY SOURCES; FUELS; MATERIALS; MOLDING; NITROGEN COMPOUNDS; NUCLEAR FUELS; OXYGEN COMPOUNDS; REACTOR MATERIALS; SOLID FUELS

Optional Information

Secondary number(s)
FR patent application 8604631.