ES317516A2 - Improvements in or relating to the production of sintered uranium dioxide - Google Patents
Improvements in or relating to the production of sintered uranium dioxideInfo
- Publication number
- ES317516A2 ES317516A2 ES317516A ES317516A ES317516A2 ES 317516 A2 ES317516 A2 ES 317516A2 ES 317516 A ES317516 A ES 317516A ES 317516 A ES317516 A ES 317516A ES 317516 A2 ES317516 A2 ES 317516A2
- Authority
- ES
- Spain
- Prior art keywords
- dioxide
- mixture
- atmosphere
- uranium dioxide
- sintering
- 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
- FCTBKIHDJGHPPO-UHFFFAOYSA-N uranium dioxide Inorganic materials O=[U]=O FCTBKIHDJGHPPO-UHFFFAOYSA-N 0.000 title abstract 6
- OOAWCECZEHPMBX-UHFFFAOYSA-N oxygen(2-);uranium(4+) Chemical compound [O-2].[O-2].[U+4] OOAWCECZEHPMBX-UHFFFAOYSA-N 0.000 title abstract 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 12
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 6
- 239000000203 mixture Substances 0.000 abstract 6
- FLDALJIYKQCYHH-UHFFFAOYSA-N plutonium(IV) oxide Inorganic materials [O-2].[O-2].[Pu+4] FLDALJIYKQCYHH-UHFFFAOYSA-N 0.000 abstract 5
- 238000005245 sintering Methods 0.000 abstract 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 3
- UTDLAEPMVCFGRJ-UHFFFAOYSA-N plutonium dihydrate Chemical compound O.O.[Pu] UTDLAEPMVCFGRJ-UHFFFAOYSA-N 0.000 abstract 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 239000008188 pellet Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229920001490 poly(butyl methacrylate) polymer Polymers 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/51—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on compounds of actinides
-
- 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)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
A sintered body of high density containing uranium dioxide ore as mixture thereof with, preferably 10-30% plutonium dioxide, for use as a fuel element in a fast neutron reactor, is obtained by heating a compressed body of uranium dioxide, or mixture thereof with plutonium dioxide, to at least 1300 DEG C. in an atmosphere consisting of carbon dioxide, or a mixture thereof with carbon monoxide. If CO2 alone is used the maximum sintering temperature is 1550 DEG C. The CO/CO2 volumetric ratio may range from 1:100 to 100:1. The preferred range for a 10% PuO2, 90% UO2 being 1:100 to 1:10 and for a 30% PuO2 70% UO2 from 1:20 to 1:1, during sintering at 1400 DEG -1600 DEG C. A sintered body having a metal / oxygen atomic ratio 1,98 to 2.02:1 is produced by cooling in a reducing atmosphere, preferably a CO/CO2 atmosphere of volumetric composition range 1:10 to 100:1 although hydrogen or hydrogen containing water vapour may be used. The density of the sintered product, depends upon sintering time and attains a maximum value and diminishes thereafter. Optimum times, determined by experiment, are between 3-6 hours. Thus in Example 1 a mixture of 10% plutonium dioxide 90% uranium dioxide were ball milled and polybutyl methacrylate in toluene were added as a binder. After drying the granules were double pressed into pellets, which were heated at 400 DEG C. then to 1500 DEG C. in a CO2 atmosphere, and maintained at 1500 DEG C. for 4 hours. The resulting pellets had a theoretical density of 96% and had an oxygen/metal ratio of 2,14/1. Other examples refer to the use of CO/CO2 mixtures during sintering and H2 or H2 and water vapour during cooling. Specification 881,883 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3778764 | 1964-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES317516A2 true ES317516A2 (en) | 1968-03-16 |
Family
ID=10399002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES317516A Expired ES317516A2 (en) | 1964-09-16 | 1965-09-16 | Improvements in or relating to the production of sintered uranium dioxide |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE669681A (en) |
| DE (2) | DE1147163B (en) |
| ES (1) | ES317516A2 (en) |
| FR (2) | FR1290492A (en) |
| GB (1) | GB910517A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1393497A (en) * | 1964-02-12 | 1965-03-26 | Commissariat Energie Atomique | Process for the production of mixed oxides uo2-puo2 and products obtained by this process |
| NL142008B (en) * | 1966-10-05 | 1974-04-16 | Stichting Reactor Centrum | PROCEDURE FOR THE MANUFACTURE OF OXIDIC SOLID TABLETS CONTAINING AN ACTINIDE BORIDE AS DISAPPOINTING NEUTRON POISON. |
| IT1096285B (en) * | 1978-05-05 | 1985-08-26 | Agipnucleare S P A Comitato Na | METHOD OF MANUFACTURE OF CERAMIC MATERIAL PADS |
-
1960
- 1960-04-29 GB GB15240/60A patent/GB910517A/en not_active Expired
-
1961
- 1961-04-28 DE DEU7975A patent/DE1147163B/en active Pending
- 1961-04-29 FR FR860371A patent/FR1290492A/en not_active Expired
-
1965
- 1965-09-11 DE DEU12023A patent/DE1244639B/en active Pending
- 1965-09-15 BE BE669681A patent/BE669681A/xx unknown
- 1965-09-15 FR FR31560A patent/FR88646E/en not_active Expired
- 1965-09-16 ES ES317516A patent/ES317516A2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR88646E (en) | 1967-03-03 |
| DE1244639B (en) | 1967-07-13 |
| FR1290492A (en) | 1962-04-13 |
| GB910517A (en) | 1962-11-14 |
| DE1147163B (en) | 1963-04-11 |
| BE669681A (en) | 1966-03-15 |
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