ES447853A1 - Metodo para preparar una composicion rica en oxido de uranioa partir de hexafluoruro de uranio. - Google Patents

Metodo para preparar una composicion rica en oxido de uranioa partir de hexafluoruro de uranio.

Info

Publication number
ES447853A1
ES447853A1 ES447853A ES447853A ES447853A1 ES 447853 A1 ES447853 A1 ES 447853A1 ES 447853 A ES447853 A ES 447853A ES 447853 A ES447853 A ES 447853A ES 447853 A1 ES447853 A1 ES 447853A1
Authority
ES
Spain
Prior art keywords
uranium
gaseous
hexafluoride
gaseous reactant
reducing gas
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
ES447853A
Other languages
English (en)
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of ES447853A1 publication Critical patent/ES447853A1/es
Expired 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14—Methods for preparing oxides or hydroxides in general
    • C01B13/20—Methods for preparing oxides or hydroxides in general by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state
    • C01B13/22—Methods for preparing oxides or hydroxides in general by oxidation of elements in the gaseous state; by oxidation or hydrolysis of compounds in the gaseous state of halides or oxyhalides
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

Método para preparar una composición rica en óxido de uranio a partir de hexafluoruro de uranio en una zona de reacción en presencia de una llama activa, que incluye las operaciones que consisten en: (a) introducir un primer reactivo gaseoso constituido por una mezcla de hexafluoruro de uranio y un gas que contiene oxígeno en una zona de reacción, (b) introducir un segundo reactivo gaseoso constituido por un gas reductor en la zona de reacción, (c) introducir separadamente un gas de apantallamiento en la zona de reacción entre el primer reactivo gaseoso y el segundo reactivo gaseoso para impedir temporalmente un mezclado y una relación sustancial entre los primero y segundo reactivos gaseosos hasta que se haya producido una difusión suficiente de los reactivos mientras estos atraviesan la zona de reacción, dando lugar a una reacción que produce una composición rica en dióxido de uranio en forma de partículas y a productos de reacción gaseosos, y (d) introducir un tercer reactivo gaseoso constituido por un gas que contiene oxígeno en contacto con la composición rica en dióxido de uranio en forma de partículas y con los productos de reacción gaseosos bajo la forma de corrientes múltiples, transformando así el gas reductor residual en la zona de reacción en una forma oxidada y oxidando la composición rica en dióxido de uranio para obtener un óxido de uranio más elevado, estando por lo menos una de las múltiples corrientes dispuesta río abajo respecto a la otra de modo que el calor de la reacción se distribuya en la zona de reacción.
ES447853A 1975-05-12 1976-05-12 Metodo para preparar una composicion rica en oxido de uranioa partir de hexafluoruro de uranio. Expired ES447853A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/576,699 US3970581A (en) 1975-05-12 1975-05-12 Multiple gas streams in the post oxidation step in a process for converting uranium hexafluoride to uranium oxide rich compositions

Publications (1)

Publication Number Publication Date
ES447853A1 true ES447853A1 (es) 1978-04-01

Family

ID=24305599

Family Applications (1)

Application Number Title Priority Date Filing Date
ES447853A Expired ES447853A1 (es) 1975-05-12 1976-05-12 Metodo para preparar una composicion rica en oxido de uranioa partir de hexafluoruro de uranio.

Country Status (5)

Country Link
US (1) US3970581A (es)
JP (1) JPS5920603B2 (es)
BE (1) BE887586Q (es)
ES (1) ES447853A1 (es)
IT (1) IT1060300B (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5950030A (ja) * 1982-09-14 1984-03-22 Mitsubishi Nuclear Fuel Co Ltd 二酸化ウラン粉末の製造法
GB9309505D0 (en) * 1993-05-08 1993-06-23 British Nuclear Fuels Plc Improvements in or relating to rotary kilns
GB9410782D0 (en) † 1994-05-28 1994-07-27 British Nuclear Fuels Plc The reaction of gases
CA2137635C (en) * 1994-12-08 2007-09-04 Brian C. Olson Reaction of uranium fluorides with mineral acids to recover hydrogen fluoride
US5752158A (en) * 1996-04-19 1998-05-12 M4 Environmental L.P. Thermal process for the conversion of uranium hexafluoride
US5875385A (en) * 1997-01-15 1999-02-23 Molten Metal Technology, Inc. Method for the control of the composition and physical properties of solid uranium oxides
FR2771725B1 (fr) * 1997-11-28 2000-02-04 Franco Belge Combustibles Procede et dispositif de conversion directe d'hexafluorure d'uranium en oxyde d'uranium
US7824640B1 (en) * 2006-07-25 2010-11-02 Westinghouse Electric Co. Llc Two step dry UO2 production process utilizing a positive sealing valve means between steps
EP2277831B1 (en) * 2009-07-20 2012-05-23 Westinghouse Electric Company LLC Two step dry UO2 production process utilizing a positive sealing valve means between steps

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3382042A (en) * 1964-06-22 1968-05-07 Pittsburgh Plate Glass Co Process for preparing metal oxides
US3365274A (en) * 1964-07-13 1968-01-23 Cabot Corp Metal and metalloid oxide production
US3260575A (en) * 1964-11-19 1966-07-12 Richard L Heestand Single-step process for preparation of uranium dioxide from uranium hexafluoride
DE1592471C3 (de) * 1966-04-02 1978-11-30 Nukem Gmbh, 6450 Hanau Verfahren zur Herstellung von Urandioxidpulvern und -granulaten
US3796672A (en) * 1970-10-02 1974-03-12 Gen Electric Process for producing uranium dioxide rich compositions from uranium hexafluoride
US3786120A (en) * 1970-10-02 1974-01-15 Gen Electric Conversion of uranium hexafluoride to uranium dioxide structures of controlled density and grain size
US3814327A (en) * 1971-04-06 1974-06-04 Gen Electric Nozzle for chemical reaction processes
US3790493A (en) * 1971-04-06 1974-02-05 Gen Electric Post oxidation process for uranium dioxide rich compositions

Also Published As

Publication number Publication date
JPS5920603B2 (ja) 1984-05-14
US3970581A (en) 1976-07-20
IT1060300B (it) 1982-07-10
JPS51137700A (en) 1976-11-27
BE887586Q (fr) 1981-08-19

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19980202