http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110144471-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-006 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B61-00 |
| filingDate | 2019-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110144471-B |
| titleOfInvention | Method for extracting technetium from nuclear fuel post-treatment waste liquid |
| abstract | The invention provides a method for extracting technetium from nuclear fuel post-treatment waste liquid. The method comprises the following steps: firstly, adjusting the nitric acid concentration of the nitric acid waste liquid containing pertechnetate to be less than 2 mol/L; (II) extracting pertechnetate ions in the waste liquid, and separating to obtain an organic phase; thirdly, washing the organic phase obtained in the second step by using a nitric acid solution containing oxalic acid; and (IV) back extracting the technetium in the organic phase by using an alkaline aqueous solution to obtain a technetium product liquid. The invention effectively realizes the extraction and purification of technetium in the post-treatment nitric acid waste liquid of the nuclear fuel. The technetium extracting method is simple in operation, can be suitable for a traditional PUREX process post-treatment factory, the technetium concentration and the nitric acid concentration of a treatment object can be higher, the composition of waste liquid can be more complex, and the radioactive waste generation amount in the treatment process is smaller. |
| priorityDate | 2019-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.