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FR2370695A1 - Uranium oxide prodn. by thermal decomposition of uranyl nitrate - with catalytic reduction of the nitrogen oxide(s) produced to provide heat for the process - Google Patents

Uranium oxide prodn. by thermal decomposition of uranyl nitrate - with catalytic reduction of the nitrogen oxide(s) produced to provide heat for the process

Info

Publication number
FR2370695A1
FR2370695A1 FR7634421A FR7634421A FR2370695A1 FR 2370695 A1 FR2370695 A1 FR 2370695A1 FR 7634421 A FR7634421 A FR 7634421A FR 7634421 A FR7634421 A FR 7634421A FR 2370695 A1 FR2370695 A1 FR 2370695A1
Authority
FR
France
Prior art keywords
uranyl nitrate
thermal decomposition
prodn
produced
catalytic reduction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7634421A
Other languages
French (fr)
Other versions
FR2370695B1 (en
Inventor
Roland Bachelard
Rene Romano
Joel Verilhac
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA
Original Assignee
Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA filed Critical Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA
Priority to FR7634421A priority Critical patent/FR2370695A1/en
Publication of FR2370695A1 publication Critical patent/FR2370695A1/en
Application granted granted Critical
Publication of FR2370695B1 publication Critical patent/FR2370695B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G43/00—Compounds of uranium
    • C01G43/01—Oxides; Hydroxides
    • C01G43/025—Uranium dioxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G43/00—Compounds of uranium
    • C01G43/01—Oxides; Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G43/00—Compounds of uranium
    • C01G43/04—Halides of uranium
    • C01G43/06—Fluorides
    • C01G43/063—Hexafluoride (UF6)
    • C01G43/066—Preparation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

In the termal decomposition of uranyl nitrate into uranium oxide and oxides of nitrogen, the oxides of nitrogen produced are catalytically reduced to N2 and the resulting heat is utilised for the thermal decomposition of further uranyl nitrate. The process is autothermic and gives UO3 with sufficiently high reactivity for subsequent processing into UF6 in known manner. The process proceeds without the prodn. of contaminated effluents or of nitric acid which cannot be used in the process.
FR7634421A 1976-11-16 1976-11-16 Uranium oxide prodn. by thermal decomposition of uranyl nitrate - with catalytic reduction of the nitrogen oxide(s) produced to provide heat for the process Granted FR2370695A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7634421A FR2370695A1 (en) 1976-11-16 1976-11-16 Uranium oxide prodn. by thermal decomposition of uranyl nitrate - with catalytic reduction of the nitrogen oxide(s) produced to provide heat for the process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7634421A FR2370695A1 (en) 1976-11-16 1976-11-16 Uranium oxide prodn. by thermal decomposition of uranyl nitrate - with catalytic reduction of the nitrogen oxide(s) produced to provide heat for the process

Publications (2)

Publication Number Publication Date
FR2370695A1 true FR2370695A1 (en) 1978-06-09
FR2370695B1 FR2370695B1 (en) 1979-03-02

Family

ID=9179950

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7634421A Granted FR2370695A1 (en) 1976-11-16 1976-11-16 Uranium oxide prodn. by thermal decomposition of uranyl nitrate - with catalytic reduction of the nitrogen oxide(s) produced to provide heat for the process

Country Status (1)

Country Link
FR (1) FR2370695A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473360A1 (en) * 1980-01-09 1981-07-17 Commissariat Energie Atomique DEVICE FOR ATOMIZING A REACTIONAL MIXTURE
FR2526006A1 (en) * 1982-04-30 1983-11-04 Comurhex PROCESS FOR OBTAINING UO3 OF HIGH SPECIFIC SURFACE FROM URANYLE HYDRATE NITRATE
FR2536737A1 (en) * 1982-11-30 1984-06-01 Comurhex PROCESS FOR OBTAINING HIGH REACTIVITY UO3 BY THERMAL DECOMPOSITION IN THE SOLID FORM OF HYDRATED URANYL NITRATE
EP0143726A1 (en) * 1983-11-25 1985-06-05 COMURHEX Société pour la Conversion de l'Uranium en Métal et Hexafluorure Process for the preparation of pulverulent metal oxides from aqueous solutions or solid mixtures of metal nitrates
CN107162060A (en) * 2017-05-26 2017-09-15 中核四0四有限公司 A kind of uranyl nitrate air-blast atomization dry thermal cracking denitration prepares UO3Technique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8203357A (en) * 1981-09-11 1983-04-05 Babcock & Wilcox Co METHOD FOR PREPARING A SINTERABLE POWDER OF URANIUM DIOXIDE.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473360A1 (en) * 1980-01-09 1981-07-17 Commissariat Energie Atomique DEVICE FOR ATOMIZING A REACTIONAL MIXTURE
EP0032341B1 (en) * 1980-01-09 1983-11-23 COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel Apparatus for atomizing a reaction mixture
US4585634A (en) * 1982-04-29 1986-04-29 Comurhex Process for the production of uranium trioxide having a large specific surface from hydrated uranyl nitrate
FR2526006A1 (en) * 1982-04-30 1983-11-04 Comurhex PROCESS FOR OBTAINING UO3 OF HIGH SPECIFIC SURFACE FROM URANYLE HYDRATE NITRATE
WO1983003820A1 (en) * 1982-04-30 1983-11-10 Comurhex Method for obtaining uo3 of high specific surface from hydrated uranyl nitrate
FR2536737A1 (en) * 1982-11-30 1984-06-01 Comurhex PROCESS FOR OBTAINING HIGH REACTIVITY UO3 BY THERMAL DECOMPOSITION IN THE SOLID FORM OF HYDRATED URANYL NITRATE
WO1984002124A1 (en) * 1982-11-30 1984-06-07 Comurhex Method for obtaining uo3 of high reactivity by thermal decomposition in solid form of hydrated uranyl nitrate
EP0143726A1 (en) * 1983-11-25 1985-06-05 COMURHEX Société pour la Conversion de l'Uranium en Métal et Hexafluorure Process for the preparation of pulverulent metal oxides from aqueous solutions or solid mixtures of metal nitrates
CN107162060A (en) * 2017-05-26 2017-09-15 中核四0四有限公司 A kind of uranyl nitrate air-blast atomization dry thermal cracking denitration prepares UO3Technique

Also Published As

Publication number Publication date
FR2370695B1 (en) 1979-03-02

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Legal Events

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ST Notification of lapse