GB1500790A - Fluidized reactor reduction of uf6 to uo2 - Google Patents

Fluidized reactor reduction of uf6 to uo2

Info

Publication number
GB1500790A
GB1500790A GB3024375A GB3024375A GB1500790A GB 1500790 A GB1500790 A GB 1500790A GB 3024375 A GB3024375 A GB 3024375A GB 3024375 A GB3024375 A GB 3024375A GB 1500790 A GB1500790 A GB 1500790A
Authority
GB
United Kingdom
Prior art keywords
steam
bed
excess
uof
solids
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
GB3024375A
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.)
Framatome ANP Richland Inc
Original Assignee
Exxon Nuclear Co Inc
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 Exxon Nuclear Co Inc filed Critical Exxon Nuclear Co Inc
Priority to GB3024375A priority Critical patent/GB1500790A/en
Publication of GB1500790A publication Critical patent/GB1500790A/en
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
    • 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
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Landscapes

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

Abstract

1500790 Production of uranium dioxide EXXON NUCLEAR CO Inc 18 July 1975 30243/75 Heading C1A Sinterable UO 2 is made by contacting a fluidized bed of uranyl fluoride solids at a temperature of 730‹-780‹ C. countercurrently with excess steam to convert said uranyl fluoride to U 3 O 8 and thereafter fluidizing the U 3 O 8 at 450-500‹ C. while countercurrently contacting the bed with excess H 2 in the presence of steam to form UO 2 . The fluidized bed of UOF 2 solids may be established by introducing UF 6 (14) and steam into a bed of seed particles of UOF 2 solids (1) at a temperature of 658-780‹ C. The solids formed are passed to a second bed 1a maintained at 730-780‹ C. preferably 750-760‹ C. and excess steam 15 is passed through the bed. U 3 O 8 formed is passed to a second fluidized bed 2 where it is fluidized at a temperature of 450-500‹ C. with excess H 2 and steam, the ratio of H 2 to U 3 O 8 preferably being 2À5-3:1 and the ratio of H 2 to steam preferably being in the range 1À5-2:1. In another embodiment a single bed of UOF 2 seed crystals is employed at a temperature of 730-780‹ C. and the excess steam is used to convert UOF 2 formed to U 3 O 8 . In either event, the mole ratio of steam UF 6 introduced is preferably in the range 5-10:1.
GB3024375A 1975-07-18 1975-07-18 Fluidized reactor reduction of uf6 to uo2 Expired GB1500790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3024375A GB1500790A (en) 1975-07-18 1975-07-18 Fluidized reactor reduction of uf6 to uo2

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3024375A GB1500790A (en) 1975-07-18 1975-07-18 Fluidized reactor reduction of uf6 to uo2

Publications (1)

Publication Number Publication Date
GB1500790A true GB1500790A (en) 1978-02-08

Family

ID=10304569

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3024375A Expired GB1500790A (en) 1975-07-18 1975-07-18 Fluidized reactor reduction of uf6 to uo2

Country Status (1)

Country Link
GB (1) GB1500790A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584705A1 (en) * 1985-06-11 1987-01-16 Mitsubishi Metal Corp PROCESS FOR CONVERTING UF6 TO UO2

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584705A1 (en) * 1985-06-11 1987-01-16 Mitsubishi Metal Corp PROCESS FOR CONVERTING UF6 TO UO2
GB2178418A (en) * 1985-06-11 1987-02-11 Mitsubishi Metal Corp Process for the conversion of uf6 to uo2

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee