http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-910517-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e7b59574be3a6f45c6ef63a1ef657320 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E30-30 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-51 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G21C3-623 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-51 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G21C3-62 |
| filingDate | 1960-04-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_06966524ae521c66487d805e1612b1a3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_614a1e894746db157419db396d67d870 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ed1ed9fa688edca91169ac6a24a8df8 |
| publicationDate | 1962-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-910517-A |
| titleOfInvention | Improvements in or relating to the production of sintered uranium dioxide |
| 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. |
| priorityDate | 1964-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.