GB1032105A - Small spherical particles and their production - Google Patents

Small spherical particles and their production

Info

Publication number
GB1032105A
GB1032105A GB12005/63A GB1200563A GB1032105A GB 1032105 A GB1032105 A GB 1032105A GB 12005/63 A GB12005/63 A GB 12005/63A GB 1200563 A GB1200563 A GB 1200563A GB 1032105 A GB1032105 A GB 1032105A
Authority
GB
United Kingdom
Prior art keywords
sol
droplets
spherical
particles
liquid medium
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
GB12005/63A
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.)
WR Grace and Co
Original Assignee
WR Grace and 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 WR Grace and Co filed Critical WR Grace and Co
Publication of GB1032105A publication Critical patent/GB1032105A/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
    • 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
    • B01J2/06—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 liquid medium
    • B01J2/08—Gelation of a colloidal solution
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C01P2002/52—Solid solutions containing elements as dopants
    • C01P2002/54—Solid solutions containing elements as dopants one element only
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • 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
    • 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

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

Spherical particles of a substance which can be dispersed as a sol are made by forming spherical droplets of a sol of the substance in a boiling stirred immiscible liquid medium which has a density greater than that of the sol and a boiling point higher than that of the sol liquid, and solidifying the droplets in the liquid medium to spherical particles containing no sol liquid. The sol particles may comprise one or more actinide metal oxides, e.g. urania, thoria, or a mixture thereof with one or more rare earth oxides (including yttria) or zirconia. Sols of alumina, zirconia, and beryllia can also be used. The sol may be an aquasol, in which case a suitable immiscible liquid medium comprises a chlorinated hydrocarbon, or a mixture thereof, having a density of 1.1 to 1.3 at operating temperature and a b.pt. between 130 DEG and 180 DEG C. The initial size of the droplets may be 0.1 to 1.0 mm. dia., and the droplets may contain 1 to 30% by weight solids. The spherical particles produced may be 5 to 500 m dia. Spherical oxide particles may be sintered alone or together with other oxide particles or with a material which reacts with the oxides during sintering, e.g. actinide metal oxide particles when sintered with carbon form actinide metal carbides. Uranium carbide is thus prepared from urania.
GB12005/63A 1962-05-03 1963-03-26 Small spherical particles and their production Expired GB1032105A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19208862A 1962-05-03 1962-05-03

Publications (1)

Publication Number Publication Date
GB1032105A true GB1032105A (en) 1966-06-08

Family

ID=22708193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12005/63A Expired GB1032105A (en) 1962-05-03 1963-03-26 Small spherical particles and their production

Country Status (2)

Country Link
DE (1) DE1229049B (en)
GB (1) GB1032105A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19602525A1 (en) * 1996-01-25 1997-08-07 Starck H C Gmbh Co Kg Spherical shaped ceramic bodies, process for their production and their use

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1401962A (en) * 1971-06-24 1975-08-06 Atomic Energy Authority Uk Gelation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666749A (en) * 1951-11-21 1954-01-19 Universal Oil Prod Co Spheroidal alumina
DE1038541B (en) * 1956-03-17 1958-09-11 Silica Gel Ges Dr Von Luede & Process for the production of inorganic gel grains

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19602525A1 (en) * 1996-01-25 1997-08-07 Starck H C Gmbh Co Kg Spherical shaped ceramic bodies, process for their production and their use

Also Published As

Publication number Publication date
DE1229049B (en) 1966-11-24

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