GB1350923A - Method for preparing oxides of fissile materials - Google Patents

Method for preparing oxides of fissile materials

Info

Publication number
GB1350923A
GB1350923A GB1694571A GB1694571A GB1350923A GB 1350923 A GB1350923 A GB 1350923A GB 1694571 A GB1694571 A GB 1694571A GB 1694571 A GB1694571 A GB 1694571A GB 1350923 A GB1350923 A GB 1350923A
Authority
GB
United Kingdom
Prior art keywords
zone
apparent density
product
nitrate
uranium
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.)
Expired
Application number
GB1694571A
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB1350923A publication Critical patent/GB1350923A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
    • 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
    • C01G43/01—Oxides; Hydroxides
    • C01G43/025—Uranium dioxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • 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
    • C01P2006/11—Powder tap density
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

1350923 Uranium oxides COMMISSARIAT A L'ENERGIE ATOMIQUE 25 May 1971 [25 May 1970] 16945/71 Heading ClA Uranium oxides are prepared by spraying a mixture of a uranium nitrate solution and formic acid, into a first zone in a vessel maintained at 150-300‹ C., and calcining the product from the first zone in a second zone in the same vessel. The nitrate may be aqueous uranyl nitrate and may be mixed with 0À4 ml. formic acid/gm.U. The solution may be sprayed in with air or H 2 / N 2 mixture as an atomizing gas the gas being first brought to the temperature of the first zone. The calcining may be carried out at 800‹ C. in air to yield U 3 O 8 , or in hydrogen to yield UO 2 . The intermediate product has a specific area of 2À5-7 m.<SP>2</SP>/gm. and an apparent density of 0À9-1À8 g./cm.<SP>3</SP>. A U 3 O 8 product has a specific area of 2À7 m.<SP>2</SP>/gm., an average grain diameter of 1À2 Á and an apparent density of 1À5 g./cm.<SP>3</SP>. The UO 2 products have specific areas of 1À4- 4-5 m.<SP>2</SP>/g., average grain diameter of 0À5-1À6 Á and apparent density of 1À2-2À6 g./cm.<SP>3</SP>.
GB1694571A 1970-05-25 1971-05-25 Method for preparing oxides of fissile materials Expired GB1350923A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7018979A FR2088170B1 (en) 1970-05-25 1970-05-25

Publications (1)

Publication Number Publication Date
GB1350923A true GB1350923A (en) 1974-04-24

Family

ID=9056053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1694571A Expired GB1350923A (en) 1970-05-25 1971-05-25 Method for preparing oxides of fissile materials

Country Status (3)

Country Link
BE (1) BE767322A (en)
FR (1) FR2088170B1 (en)
GB (1) GB1350923A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6656391B1 (en) 1998-11-26 2003-12-02 Commissariat A L'energie Atomique Preparation by spray-drying of a flowable uranium dioxide powder obtained by dry process conversion of UF6
RU2494479C1 (en) * 2012-04-09 2013-09-27 Российская Федерация, от имени которой выступает Федеральное государственное унитарное предприятие "Федеральный центр ядерной и радиационной безопасности" Method for obtaining solid solutions of oxides of actinides
RU2543086C1 (en) * 2013-08-26 2015-02-27 Федеральное государственное унитарное предприятие "Научно-производственное объединение "Радиевый институт имени В.Г. Хлопина" Method of obtaining individual and mixed metal oxides
RU2570510C2 (en) * 2014-04-30 2015-12-10 Федеральное государственное бюджетное учреждение науки Институт катализа им. Г.К. Борескова Сибирского отделения Российской академии наук Catalyst (versions), method of thereof preparation (versions) and method of purification of liquid radioactive wastes
RU2662526C2 (en) * 2013-10-22 2018-07-26 Коммиссариат А Л' Энержи Атомик Э Оз Энержи Альтернатив Process for preparing a powder comprising a solid solution of uranium dioxide and of a dioxide of at least one other actinide and/or lanthanide element

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT366845B (en) * 1977-05-24 1982-05-10 Oesterr Forsch Seibersdorf METHOD FOR PRODUCING SPHERICAL FUEL PARTICLES
FR2526006A1 (en) * 1982-04-30 1983-11-04 Comurhex PROCESS FOR OBTAINING UO3 OF HIGH SPECIFIC SURFACE FROM URANYLE HYDRATE NITRATE
FR2555566B1 (en) * 1983-11-25 1989-02-17 Comurhex PROCESS FOR THE PREPARATION OF POWDER METAL OXIDES FROM AQUEOUS SOLUTIONS OR SOLID MIXTURES OF METAL NITRATES
GB2210605B (en) * 1987-10-05 1991-06-26 Merck Patent Gmbh Process for the preparation of metal oxide powders
DE3805063A1 (en) * 1988-02-18 1989-08-31 Kernforschungsz Karlsruhe METHOD FOR PRODUCING NUCLEAR FUEL MIXED OXIDS FROM A NITRATE SOLUTION
FR2998484B1 (en) * 2012-11-28 2014-12-05 Commissariat Energie Atomique PROCESS FOR PRODUCING SOLID MICROSPHERLES OF ACTINIDE COMPOUNDS FROM AN ACTINIDE SALT SOLUTION AND THE ASSOCIATED DEVICE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1308621A (en) * 1961-09-13 1962-11-09 Commissariat Energie Atomique Improvements in uranium dioxide manufacturing processes
FR1588805A (en) * 1968-05-10 1970-03-16

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6656391B1 (en) 1998-11-26 2003-12-02 Commissariat A L'energie Atomique Preparation by spray-drying of a flowable uranium dioxide powder obtained by dry process conversion of UF6
RU2494479C1 (en) * 2012-04-09 2013-09-27 Российская Федерация, от имени которой выступает Федеральное государственное унитарное предприятие "Федеральный центр ядерной и радиационной безопасности" Method for obtaining solid solutions of oxides of actinides
RU2543086C1 (en) * 2013-08-26 2015-02-27 Федеральное государственное унитарное предприятие "Научно-производственное объединение "Радиевый институт имени В.Г. Хлопина" Method of obtaining individual and mixed metal oxides
RU2662526C2 (en) * 2013-10-22 2018-07-26 Коммиссариат А Л' Энержи Атомик Э Оз Энержи Альтернатив Process for preparing a powder comprising a solid solution of uranium dioxide and of a dioxide of at least one other actinide and/or lanthanide element
RU2570510C2 (en) * 2014-04-30 2015-12-10 Федеральное государственное бюджетное учреждение науки Институт катализа им. Г.К. Борескова Сибирского отделения Российской академии наук Catalyst (versions), method of thereof preparation (versions) and method of purification of liquid radioactive wastes

Also Published As

Publication number Publication date
FR2088170A1 (en) 1972-01-07
FR2088170B1 (en) 1975-01-10
BE767322A (en) 1971-10-18

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee