http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1164810-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e7b59574be3a6f45c6ef63a1ef657320 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F9-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-653 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-653 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F9-10 |
| filingDate | 1966-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9601f96c142be58edc3e0f9e1c010aa0 |
| publicationDate | 1969-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1164810-A |
| titleOfInvention | Improvements in or relating to Production of Particulate Refractory Material |
| abstract | 1,164,810. Processing spent nuclear fuel. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 11 Dec., 1967 [19 Dec., 1966], No. 56718/66. Heading G6R. [Also in Divisions C1 and H5] Nuclear fuel such as uranium or plutonium oxide or carbide which has been subjected to fission in a nuclear reactor undergoes a meltreprocessing by a process which comprises establishing an arc between an electrode and a cooled crucible, feeding the fuel to be melted by the arc into the crucible and simultaneously rotating the crucible about its axis of symmetry, whereby the molten material is flung therefrom and allowed to solidify without substantial contact with a solid surface. The process will remove the volatile and gaseous fission products but the material will still be contaminated with heavy metal fission products. The fuel to be reprocessed by melting may contain sodium and after the process the fuel can be reloaded into cans ready for re-use in a nuclear reactor. The arc is struck between the electrode and crucible prior to feeding the refractory material to the crucible and the gas atmosphere is argon at reduced pressure. The crucible is rotated preferably at speeds between 200 and 2000 r.p.m. The apparatus comprises a copper crucible 1 located within a furnace drum 4. A vacuumtight connection is made between the crucible mounting means 5 and the base 6 of the drum furnace 4. Water inlet and outlet pipes 7 are provided for conveying cooling water to cooling passages 2. The mounting means 5 include a spur gear 8 which is in mesh with a second spur gear 9 on shaft 10 for rotating the crucible. Power supplies for crucible 1 are provided by conductors 11 and brushes 12. At the top of the furnace extension 14 is a top plate 19 carrying a central column 21 which houses an electrode support 22 which is water cooled by means of pipes 23 and carries a bus-bar 24 for connection to the electricity supply by conductors 25. At the lower end of support 22 is a water-cooled graphite electrode 26 which has an internal bore 28. Provision is made by a screw mechanism 30 for adjusting the effective axial position of electrode 26 and the assembly comprising the support 22 and electrode 26 is capable of axial movement within the column 21 so as to permit the arc to be struck by engaging the electrode 26 with crucible 1. A container 31 mounted on top plate 19 is provided with flow control means and is connected by means of a flexible pipe 32 to bore 28 of electrode 26 through which refractory material is fed from container 31. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6744006-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2365876-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2117417-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7727460-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7022155-B2 |
| priorityDate | 1966-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.