ES381726A1 - Production of uranium dioxide - Google Patents
Production of uranium dioxideInfo
- Publication number
- ES381726A1 ES381726A1 ES381726A ES381726A ES381726A1 ES 381726 A1 ES381726 A1 ES 381726A1 ES 381726 A ES381726 A ES 381726A ES 381726 A ES381726 A ES 381726A ES 381726 A1 ES381726 A1 ES 381726A1
- Authority
- ES
- Spain
- Prior art keywords
- moles
- uranium
- hydrogen
- water vapor
- reaction products
- 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
-
- 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
- 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
- C01P2006/12—Surface area
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth 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
A process for converting uranium hexafluoride into high-quality ceramic uranium dioxide in a fluidized bed process having at least three stages, characterized in that in the first stage a first fluidized bed consisting essentially of uranium hexafluoride is established, steam, and hydrogen in the proportion of 1 mol; 2 to 8 moles; 1 to 8 moles, respectively, and the bed is heated to a temperature of between about 475ºC and about 600ºC to produce first intermediate reaction products including UO2F2 and U3O8; In the second stage, a second fluidized bed is established comprising a mixture of the first intermediate reaction products and additional water vapor and hydrogen, such that it provides from about 4 to 12 moles of water vapor and from about 1 to 6 moles of hydrogen per mole of uranium, and the second bed is heated to a temperature of between about 575ºC and about 650ºC to produce a second intermediate reaction products including UO2, and in the third stage a third fluidized bed is established comprising a mixture of the second intermediate reaction products and additional water vapor and hydrogen, such that it provides from about 2 to 11 moles of water vapor and from about 0.5 to 6 moles of hydrogen per mole of uranium, and the third bed is heated to a temperature between approximately 575ºC and approximately 650ºC to produce ceramic quality uranium dioxide ica capable of being formed into compact pieces and calcined into tablets that have a density of between 90% and 96% of the theoretical density and with a recovery of uranium greater than 99.9%. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US84306269A | 1969-07-18 | 1969-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES381726A1 true ES381726A1 (en) | 1972-11-16 |
Family
ID=25288982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES381726A Expired ES381726A1 (en) | 1969-07-18 | 1970-07-13 | Production of uranium dioxide |
Country Status (11)
| Country | Link |
|---|---|
| AT (1) | AT301488B (en) |
| BE (1) | BE753410A (en) |
| CA (1) | CA926583A (en) |
| CH (1) | CH546207A (en) |
| DE (1) | DE2033433A1 (en) |
| ES (1) | ES381726A1 (en) |
| FI (1) | FI51166C (en) |
| FR (1) | FR2051856B1 (en) |
| GB (1) | GB1281508A (en) |
| NL (1) | NL7010016A (en) |
| SE (1) | SE357948B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4020146A (en) * | 1969-07-18 | 1977-04-26 | Westinghouse Electric Corporation | Production of uranium dioxide |
| US3808145A (en) * | 1971-11-03 | 1974-04-30 | Gen Electric | Ceramic defluorination and reduction process |
| US4053559A (en) * | 1976-06-14 | 1977-10-11 | Westinghouse Electric Corporation | Production of uranium dioxide |
| DE2951451A1 (en) * | 1979-12-20 | 1981-07-16 | Alkem Gmbh, 6450 Hanau | METHOD FOR PRODUCING NUCLEAR FUEL OXIDS |
| GB9411096D0 (en) * | 1994-06-03 | 1994-07-27 | British Nuclear Fuels Plc | Uranium oxide production |
-
1970
- 1970-06-04 CA CA084628A patent/CA926583A/en not_active Expired
- 1970-06-22 GB GB30139/70A patent/GB1281508A/en not_active Expired
- 1970-06-29 FI FI701822A patent/FI51166C/en active
- 1970-07-06 DE DE19702033433 patent/DE2033433A1/en active Pending
- 1970-07-07 NL NL7010016A patent/NL7010016A/xx not_active Application Discontinuation
- 1970-07-13 ES ES381726A patent/ES381726A1/en not_active Expired
- 1970-07-13 BE BE753410D patent/BE753410A/en not_active IP Right Cessation
- 1970-07-17 FR FR7026516A patent/FR2051856B1/fr not_active Expired
- 1970-07-17 SE SE09916/70A patent/SE357948B/xx unknown
- 1970-07-17 AT AT652570A patent/AT301488B/en not_active IP Right Cessation
- 1970-07-20 CH CH1100770A patent/CH546207A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB1281508A (en) | 1972-07-12 |
| DE2033433A1 (en) | 1971-02-04 |
| FI51166B (en) | 1976-08-02 |
| FR2051856B1 (en) | 1974-08-09 |
| SE357948B (en) | 1973-07-16 |
| FI51166C (en) | 1976-11-10 |
| CH546207A (en) | 1974-02-28 |
| AT301488B (en) | 1972-09-11 |
| FR2051856A1 (en) | 1971-04-09 |
| NL7010016A (en) | 1971-01-20 |
| CA926583A (en) | 1973-05-22 |
| BE753410A (en) | 1970-12-16 |
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