Published March 1967 | Version v1
Report Open

Continuous precipitation process of plutonium salts

Creators

  • 1. Commissariat a l'Energie Atomique, Fontenay-aux-Roses (France). Centre d'Etudes Nucleaires

Description

This work concerns the continuous precipitation process of plutonium oxalate. Investigations about the solubility of different valence states in nitric-oxalic and in nitric-sulfuric-oxalic medium lead to select the precipitation process of tetravalent plutonium oxalate. Settling velocity and granulometry of tetravalent oxalate plutonium have been studied with variation of several precipitation parameters such as: temperature, acidity, excess of oxalic acid and aging time. Then are given test results of some laboratory continuous apparatus. Conditions of operation with adopted tubular apparatus are defined in conclusion. A flow-sheet is given for a process at industrial scale. (author)

Availability note (English)

Available from INIS in electronic form

Abstract (French)

Cette etude porte sur la precipitation continue de l'oxalate de plutonium. L'etude de la solubilite des differentes valences du plutonium dans des milieux acides nitrique-oxalique, puis nitrique-sulfurique-oxalique conduit a choisir la precipitation de l'oxalate de plutonium tetravalent. L'etude porte ensuite sur la sedimentation et la granulometrie de l'oxalate de Pu4+ obtenue en faisant varier differents parametres de la precipitation : la temperature, l'acidite, l'exces oxalique et le temps de murissement. La derniere partie traite des resultats obtenus avec plusieurs types d'appareils continus essayes au laboratoire. En conclusion sont donnees les conditions de marche de l'appareil tubulaire adopte, ainsi qu'une extrapolation a l'echelle industrielle sous forme d'un flow-sheet. (auteur)

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Additional details

Additional titles

Original title (French)
Procede continu de precipitation des sels de plutonium

Publishing Information

Imprint Pagination
[85 p.]
Report number
CEA-R--3198

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
36090302
Subject category
S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
Resource subtype / Literary indicator
Thesis
Descriptors DEI
OXALATES; PLUTONIUM; PRECIPITATION; SEDIMENTATION; SOLUBILITY
Descriptors DEC
ACTINIDES; CARBOXYLIC ACID SALTS; ELEMENTS; METALS; SEPARATION PROCESSES; TRANSURANIUM ELEMENTS

Optional Information

Notes
29 refs.