http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0347625-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c2f4f7b17dabc90df9774793cb3e6427 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G21F9-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G21F9-06 |
| filingDate | 1989-06-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c36f2943c832d7a8053344ddda31db11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b03875e7b3aa1f5e519d91f7cbb7d7ed http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_790adb594f22af7d9516d14e5b48e1e9 |
| publicationDate | 1989-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0347625-A2 |
| titleOfInvention | Method for separating technetium, ruthenium and palladium from solutions of nuclear fuels |
| abstract | The invention relates to a process for separating the valuable materials technetium, ruthenium and palladium from material flows which arise during the reprocessing of irradiated nuclear fuel, the valuable substance being isolated by precipitation and ion exchange from a nitric acid containing the valuable substances and other fission / activation products.n n n The object of the invention is to selectively separate the valuable materials technetium, ruthenium and palladium from acidic solutions of irradiated nuclear fuel and with high efficiency.n n n a) Zugabe von Diäthylthioharnstoff (DETH) zu der Stammlösung, wobei Palladium selektiv ausgefällt wird, und Abtrennung des Niederschlags; b) Einleiten der von Palladium befreiten Lösung in ein Bett eines stark sauren Kationenaustauschers zur Abtrennung von Technetium und Ruthenium; c) Waschen des Kationenaustauschers mit verdünnter, verzugsweise etwa 2-molarer Salpetersäure; d) selektive oxidierende Eluierung des Technetiums mit einer verdünnten Salpetersäurelösung, die ein Oxidationsmittel enthält; e) selektive Eluierung des Rutheniums mit Hilfe von konzentrierter, vorzugsweise 6-8-molarer Salpetersäure. The process according to the invention is characterized by the following process steps: a) addition of diethylthiourea (DETH) to the stock solution, whereby palladium is selectively precipitated, and separation of the precipitate; b) introducing the palladium-freed solution into a bed of a strongly acidic cation exchanger to separate technetium and ruthenium; c) washing the cation exchanger with dilute, preferably about 2-molar nitric acid; d) selective oxidizing elution of the technetium with a dilute nitric acid solution containing an oxidizing agent; e) selective elution of the ruthenium with the aid of concentrated, preferably 6-8 molar nitric acid. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113406114-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023170354-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-3133390-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0893450-A1 |
| priorityDate | 1988-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.