GB844980A - Method of producing dense uranium oxide bodies - Google Patents
Method of producing dense uranium oxide bodiesInfo
- Publication number
- GB844980A GB844980A GB8617/58A GB861758A GB844980A GB 844980 A GB844980 A GB 844980A GB 8617/58 A GB8617/58 A GB 8617/58A GB 861758 A GB861758 A GB 861758A GB 844980 A GB844980 A GB 844980A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steam
- atmosphere
- uranium
- sintering
- oxygen
- 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
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
-
- 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
- C01P2004/62—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
- C01P2006/10—Solid 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
- C01P2006/80—Compositional purity
-
- 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)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- General Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Dense uranium oxide bodies are prepared by sintering in a steam atmosphere a body of uranium oxide grains, having an atomic ratio of oxygen to uranium not over 2.04, preferably under 2.02, and a particle size of less than 1 micron average diameter. The sintering temperature may be 1300 DEG C.-1400 DEG C. If the original grains are oversize, they may be reduced in size, for example by ballmilling, such operations tending to increase the oxygen-uranium ratio, which must be reduced to not over 2.04 before the steam sintering, for example for firing at about 1200 DEG C. for about 2 hours in a hydrogen atmosphere. The final sintered body may be cooled in a steam or a hydrogen atmosphere. Prior to the initial reduction in a hydrogen atmosphere, the body may be brought to 1200 DEG C. in a steam or hydrogen atmosphere, or in a neutral or reducing atmosphere such as nitrogen or cracked ammonia. The reduction may be carried out at any point prior to the steam sintering. The product after sintering has an oxygen-uranium ratio of about 2.19, but the final oxygen content depends on the atmosphere in which the body is cooled. In a hydrogen atmosphere the oxygen-uranium ratio is 2.03 or less, whereas in a steam atmosphere the body consists of two cubic faced crystals, UO2 and UO2,25, in the ratio of about 1:3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US844980XA | 1957-04-09 | 1957-04-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB844980A true GB844980A (en) | 1960-08-17 |
Family
ID=22185334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8617/58A Expired GB844980A (en) | 1957-04-09 | 1958-03-18 | Method of producing dense uranium oxide bodies |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE566008A (en) |
| DE (1) | DE1084188B (en) |
| FR (1) | FR1193559A (en) |
| GB (1) | GB844980A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB528025A (en) * | 1938-04-27 | 1940-10-21 | Steatit Magnesia Ag | Improvements in and relating to the manufacture of ferromagnetic material |
-
0
- BE BE566008D patent/BE566008A/xx unknown
-
1958
- 1958-03-18 GB GB8617/58A patent/GB844980A/en not_active Expired
- 1958-03-24 FR FR1193559D patent/FR1193559A/en not_active Expired
- 1958-04-03 DE DEU5259A patent/DE1084188B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BE566008A (en) | |
| DE1084188B (en) | 1960-06-23 |
| FR1193559A (en) | 1959-11-03 |
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