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Preparation of the pur uranium-metal; La preparation de l'uranium-metal pur

Abstract

A detailed description of the chemical processes used to prepare in the factory of Bouchet of the CEA (Seine-Et-Oise) pur metal uranium with either relatively rich ores, or extracts coming of physical or chemical treatment of poor ores. The nitric treatment of ores succeeds to the production of uranate of impure sodium carbonate. This last last product is dissolved in nitric acid and the uranyl nitrate is extracted by tributyl-phosphate diluted in an inert solvent. The uranyl nitrate pure is re-extracted and successively transformed in uranium peroxide, in orange oxide then in brown oxide which is transformed in fluoride by the anhydrous hydrofluoric acid. Uranate fluoride is then reduced in metal by the pure calcium with an yield superior to 99%. (authors) [French] Description detaillee des procedes chimiques mis en jeu pour preparer a l'Usine du Bouchet du Commissariat a l'Energie Atomique (Seine-et-Oise) l'uranium metal pur a partir soit de minerais relativement riches, soit de concentres provenant de traitement physique ou chimique de minerais pauvres. Le traitement nitrique des minerais aboutit a la production d'uranate de soude impur. Ce dernier est a son tour dissous dans l'acide nitrique et le nitrate d'uranyle est extrait par du tributyl-phosphate dilue par un  More>>
Authors:
Goldschmidt, B; Vertes, P [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-425
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: 0 ref
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; ORE ENRICHMENT; PURIFICATION; REDUCTION; SODIUM URANATES; SOLVENT EXTRACTION; URANIUM; URANIUM FLUORIDES; URANIUM ORES; URANIUM OXIDES; URANYL NITRATES
OSTI ID:
20846053
Research Organizations:
CEA Saclay, 91 - Gif-sur-Yvette (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR06R0425018214
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
10 pages
Announcement Date:
Apr 02, 2007

Citation Formats

Goldschmidt, B, and Vertes, P. Preparation of the pur uranium-metal; La preparation de l'uranium-metal pur. France: N. p., 1955. Web.
Goldschmidt, B, & Vertes, P. Preparation of the pur uranium-metal; La preparation de l'uranium-metal pur. France.
Goldschmidt, B, and Vertes, P. 1955. "Preparation of the pur uranium-metal; La preparation de l'uranium-metal pur." France.
@misc{etde_20846053,
title = {Preparation of the pur uranium-metal; La preparation de l'uranium-metal pur}
author = {Goldschmidt, B, and Vertes, P}
abstractNote = {A detailed description of the chemical processes used to prepare in the factory of Bouchet of the CEA (Seine-Et-Oise) pur metal uranium with either relatively rich ores, or extracts coming of physical or chemical treatment of poor ores. The nitric treatment of ores succeeds to the production of uranate of impure sodium carbonate. This last last product is dissolved in nitric acid and the uranyl nitrate is extracted by tributyl-phosphate diluted in an inert solvent. The uranyl nitrate pure is re-extracted and successively transformed in uranium peroxide, in orange oxide then in brown oxide which is transformed in fluoride by the anhydrous hydrofluoric acid. Uranate fluoride is then reduced in metal by the pure calcium with an yield superior to 99%. (authors) [French] Description detaillee des procedes chimiques mis en jeu pour preparer a l'Usine du Bouchet du Commissariat a l'Energie Atomique (Seine-et-Oise) l'uranium metal pur a partir soit de minerais relativement riches, soit de concentres provenant de traitement physique ou chimique de minerais pauvres. Le traitement nitrique des minerais aboutit a la production d'uranate de soude impur. Ce dernier est a son tour dissous dans l'acide nitrique et le nitrate d'uranyle est extrait par du tributyl-phosphate dilue par un solvant inerte. Le nitrate d'uranyle pur reextrait est transforme successivement en peroxyde d'uranium, en oxyde orange puis en oxyde brun qui est transforme en fluorure par l'acide fluorhydrique anhydre. Le fluorure uraneux est reduit en metal par le calcium pur avec un rendement superieur a 99 %. (auteurs)}
place = {France}
year = {1955}
month = {Jul}
}