| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_765425bebfe2c0dcad184d8404b9e9e3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G21F9-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G21F9-32 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G25-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G43-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G21F9-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G21F9-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G21F9-32 |
| filingDate |
1992-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3cfddb93c928af88a7ee4ebe0babcf55
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2d2340e2544b48acd814c66f6bf8a158
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7c13c5dfbfd2074606710e90a02e0f0c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8ebf4a6027f2df5fc8cb36ec9420bc84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fa1cb70af2bdf46ae1913ff1b5547769 |
| publicationDate |
1992-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9218985-A1 |
| titleOfInvention |
Removal of radioactivity from zircon |
| abstract |
The specification discloses a process for removing radionuclides from zircon. The process involves thermally decomposing the zircon in the presence of suitable additives, extracting the radionuclides chemically and recovering zirconia and silica. Suitable additives include fluxes, silica and any oxide capable of forming a silicate with silica when heated. Chemical treatments disclosed include leaching with mineral acids and strong organic acids. Methods of stabilizing the radionuclides extracted by leaching are also disclosed. One method involves spray roasting. Another method involves neutralization of leach liquor and recovery of radionuclide solids by filtration or other suitable liquid/solid separation techniques. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113429224-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0708742-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0708742-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113429224-B |
| priorityDate |
1991-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |