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Separation process of zirconium and hafnium; Procede de separation du zirconium et du hafnium

Abstract

About the separation different processes of zirconium-hafnium, the extraction by solvent in cross-current is the most easily the process usable on an industrial scale. It uses tributyl phosphate as solvent, diluted with white spirit to facilitate the decanting. Some exploratory tests showed that nitric environment seemed the most favorable for extraction; but a lot of other factors intervene in the separation process. We studied the influence of the acidity successively, the NO{sub 3}{sup -} ions concentration, the role of the cation coming with NO{sub 3}{sup -}, as well as the influence of the concentration of zirconium in the solution on the separation coefficient {beta} = {alpha}{sub Zr} / {alpha}{sub Hf}. (M.B.) [French] Des differents procedes de separation zirconium-hafnium, l'extraction par solvant en contre-courant est le procede le plus facilement utilisable a l'echelle industrielle. On utilise comme solvant le phosphate de tributyle, dilue avec du white spirit pour faciliter les decantations. Des essais preliminaires ont montre que le milieu nitrique semblait le plus favorable a l'extraction; mais beaucoup d'autres facteurs interviennent dans le processus de separation. Nous avons etudie successivement l'influence de l'acidite, celle de la concentration en ions NO{sub 3}{sup -}, le role du cation accompagnant NO{sub 3}{sup -}, ainsi  More>>
Authors:
Hure, J; Saint-James, R [1] 
  1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1955
Product Type:
Technical Report
Report Number:
CEA-R-427
Resource Relation:
Conference: Geneva Conference: communication of the CEA, Communication du C.E.A. a la conference de Geneve, Geneve (Switzerland), Aug 1955; Other Information: 3 ref
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CONCENTRATION RATIO; COUNTERFLOW SYSTEMS; DECANTATION; HAFNIUM; NITRATES; NITRIC ACID; PH VALUE; SOLVENT EXTRACTION; TBP; TECHNOLOGY ASSESSMENT; ZIRCONIUM
OSTI ID:
20846055
Research Organizations:
CEA Saclay, 91 - Gif-sur-Yvette (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR06R0427018216
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
16 pages
Announcement Date:
Mar 29, 2007

Citation Formats

Hure, J, and Saint-James, R. Separation process of zirconium and hafnium; Procede de separation du zirconium et du hafnium. France: N. p., 1955. Web.
Hure, J, & Saint-James, R. Separation process of zirconium and hafnium; Procede de separation du zirconium et du hafnium. France.
Hure, J, and Saint-James, R. 1955. "Separation process of zirconium and hafnium; Procede de separation du zirconium et du hafnium." France.
@misc{etde_20846055,
title = {Separation process of zirconium and hafnium; Procede de separation du zirconium et du hafnium}
author = {Hure, J, and Saint-James, R}
abstractNote = {About the separation different processes of zirconium-hafnium, the extraction by solvent in cross-current is the most easily the process usable on an industrial scale. It uses tributyl phosphate as solvent, diluted with white spirit to facilitate the decanting. Some exploratory tests showed that nitric environment seemed the most favorable for extraction; but a lot of other factors intervene in the separation process. We studied the influence of the acidity successively, the NO{sub 3}{sup -} ions concentration, the role of the cation coming with NO{sub 3}{sup -}, as well as the influence of the concentration of zirconium in the solution on the separation coefficient {beta} = {alpha}{sub Zr} / {alpha}{sub Hf}. (M.B.) [French] Des differents procedes de separation zirconium-hafnium, l'extraction par solvant en contre-courant est le procede le plus facilement utilisable a l'echelle industrielle. On utilise comme solvant le phosphate de tributyle, dilue avec du white spirit pour faciliter les decantations. Des essais preliminaires ont montre que le milieu nitrique semblait le plus favorable a l'extraction; mais beaucoup d'autres facteurs interviennent dans le processus de separation. Nous avons etudie successivement l'influence de l'acidite, celle de la concentration en ions NO{sub 3}{sup -}, le role du cation accompagnant NO{sub 3}{sup -}, ainsi que l'influence de la concentration en zirconium de la solution sur le coefficient de separation {beta} = {alpha}{sub Zr} / {alpha}{sub Hf}. (MB)}
place = {France}
year = {1955}
month = {Jul}
}