http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2013130120-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-34 |
| filingDate | 2013-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2013130120-A |
| titleOfInvention | METHOD FOR EXTRACTING MOLYBDENE-99 FROM A SOLUTION OF IRRADIATED URANIUM TARGETS |
| abstract | 1. A method for extracting molybdenum-99 from a solution of irradiated uranium targets, including dissolving the target in nitric acid, preparing the solution for extraction, extracting molybdenum from a nitric acid solution with a solution containing dialkyl phosphoric acid in a diluent, washing the extract and stripping Mo with a solution of hydrogen peroxide in nitric acid, characterized in that the preparation of the solution is carried out by filtration of the solution and reduction in the flow of the main part of iron (III) to iron (II), the extraction of molybdenum and co-extracting impurities from the nitric acid solution is carried out continuously or cyclically on multistage extraction devices in a counter-current mode with a synergistic dialkyl-phosphoric solution acid and trialkyl phosphate in a paraffinic diluent, the extract is washed with strong nitric acid, Mo is re-extracted with a solution of hydrogen peroxide in nitric acid of increased concentration, and the acid and peroxide are introduced into the cascade together or separately and the process is carried out ess with reextract return - reflax to the extraction zone, and extractant regeneration - with a solution of a mixture of a weakly alkaline reagent and a complexing agent, combining it with the reextraction of uranium, impurities of zirconium, iron and molybdenum residues. 2. The method according to claim 1, characterized in that the dissolution of the uranium target in an aluminum shell and / or based on uranium and aluminum cermet is carried out in the presence of mercury salts, and in the process of preparation for extraction from the initial solution, if necessary, mercury is removed by precipitation of mercury iodide in the presence of a reducing agent such as hydrazine nitrate. 3. The method according to claim 1, characterized in that for ec |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9896738-B2 |
| priorityDate | 2013-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.