http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0031172-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_97795a34ae1870ae198e437d5b4a11a5 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B60-026 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B60-02 |
| filingDate | 1980-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_db999817aaff72ce52fb6f9e81cf9aa8 |
| publicationDate | 1981-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0031172-A1 |
| titleOfInvention | Method for the reductive reextraction of uranium from an organic extractant |
| abstract | (a) la mise en contact de l'extractant organique avec la phase aqueuse, (b) la séparation de la phase organique appauvrie en uranium de la phase aqueuse uranifère, (c) le recyclage d'une fraction de la phase aqueuse résultant de l'étape (b) vers l'étape (a), et (d) l'adjustement de la teneur en ions ferreux de la fraction qu'on recycle. An improved process for the multi-stage re-extraction of uranium from an organic extractant comprising a dialkylphosphoric acid and a trialkylphosphine oxide, using an aqueous solution of phosphoric acid containing ferrous ions, each stage comprising the following steps: (a) bringing the organic extractant into contact with the aqueous phase, (b) separation of the organic phase depleted in uranium from the aqueous uranium phase, (c) recycling a fraction of the aqueous phase resulting from step (b) to step (a), and (d) adjusting the ferrous ion content of the fraction being recycled. n n n The ferrous ion content of the recycled fraction is adjusted by bringing the aqueous phase resulting from step (b) into contact with metallic iron, each time the ferrous ion content of said fraction drops below a value. predetermined. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0106376-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2515689-A1 |
| priorityDate | 1979-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.