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Continuous precipitation process of plutonium salts; Procede continu de precipitation des sels de plutonium

Abstract

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) [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 Pu{sup 4+} 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  More>>
Authors:
Richard, P [1] 
  1. Commissariat a l'Energie Atomique, Fontenay-aux-Roses (France). Centre d'Etudes Nucleaires
Publication Date:
Mar 01, 1967
Product Type:
Thesis/Dissertation
Report Number:
CEA-R-3198
Resource Relation:
Other Information: 29 refs
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; OXALATES; PLUTONIUM; PRECIPITATION; SEDIMENTATION; SOLUBILITY
OSTI ID:
20650689
Research Organizations:
Commissariat a l'Energie Atomique, Fontenay-aux-Roses (France). Centre d'Etudes Nucleaires
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR05R3198090302
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
[85] pages
Announcement Date:
Nov 28, 2005

Citation Formats

Richard, P. Continuous precipitation process of plutonium salts; Procede continu de precipitation des sels de plutonium. France: N. p., 1967. Web.
Richard, P. Continuous precipitation process of plutonium salts; Procede continu de precipitation des sels de plutonium. France.
Richard, P. 1967. "Continuous precipitation process of plutonium salts; Procede continu de precipitation des sels de plutonium." France.
@misc{etde_20650689,
title = {Continuous precipitation process of plutonium salts; Procede continu de precipitation des sels de plutonium}
author = {Richard, P}
abstractNote = {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) [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 Pu{sup 4+} 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)}
place = {France}
year = {1967}
month = {Mar}
}