GB953977A - Method for preparing uo compacts - Google Patents

Method for preparing uo compacts

Info

Publication number
GB953977A
GB953977A GB12198/62A GB1219862A GB953977A GB 953977 A GB953977 A GB 953977A GB 12198/62 A GB12198/62 A GB 12198/62A GB 1219862 A GB1219862 A GB 1219862A GB 953977 A GB953977 A GB 953977A
Authority
GB
United Kingdom
Prior art keywords
uranium
uranium dioxide
compacting
sintering
pressing
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
GB12198/62A
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.)
US Atomic Energy Commission (AEC)
Original Assignee
US Atomic Energy Commission (AEC)
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 US Atomic Energy Commission (AEC) filed Critical US Atomic Energy Commission (AEC)
Publication of GB953977A publication Critical patent/GB953977A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/42—Selection of substances for use as reactor fuel
    • G21C3/58—Solid reactor fuel Pellets made of fissile material
    • G21C3/62—Ceramic fuel
    • G21C3/623—Oxide fuels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

Uranium dioxide compacts are prepared by adding 2-5% water to highly sinterable uranium dioxide, compacting at at least 3000 p.s.i. and sintering in a reducing atmosphere. After the addition of water the uranium dioxide may be converted to a free flowing powder prior to pressing and sintering by pre-pressing at at least 2500 p.s.i. and comminuting to obtain fine particles. Sintered densities of 99% of the theoretical may be obtained by compacting at 150,000 to 200,000 p.s.i. and firing at 1200 DEG Cl for 8 hours followed by 8 hours at 2000 DEG C. The uranium dioxide may be prepared by precipitating uranium values from an aqueous uranyl fluoride solution at an ammonium/uranium ratio of at least 25 to 1 with thorough agitation, contacting the precipitate with steam at 400-650 DEG C., thus forming U3O8 which is reduced to UO2 with hydrogen at 550-600 DEG C. and re-oxidized until an oxygen/uranium ratio of 2.08-2.13 is obtained. Specification 937,330 is referred to.
GB12198/62A 1961-05-19 1962-03-29 Method for preparing uo compacts Expired GB953977A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11140561A 1961-05-19 1961-05-19

Publications (1)

Publication Number Publication Date
GB953977A true GB953977A (en) 1964-04-02

Family

ID=22338351

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12198/62A Expired GB953977A (en) 1961-05-19 1962-03-29 Method for preparing uo compacts

Country Status (1)

Country Link
GB (1) GB953977A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520958A (en) * 1967-10-05 1970-07-21 Reactor Ct Nederland Dev Of Nu Method for preparing an oxidic fissile material containing a metal boride as burnable poison
GB2362497A (en) * 2000-04-04 2001-11-21 Franco Belge Combustibles Granules of nuclear fuel material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520958A (en) * 1967-10-05 1970-07-21 Reactor Ct Nederland Dev Of Nu Method for preparing an oxidic fissile material containing a metal boride as burnable poison
GB2362497A (en) * 2000-04-04 2001-11-21 Franco Belge Combustibles Granules of nuclear fuel material
GB2362497B (en) * 2000-04-04 2004-08-11 Franco Belge Combustibles Granules of nuclear fuel material

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