http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103526058-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B59-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-40 |
| filingDate | 2013-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2014-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103526058-B |
| titleOfInvention | Technique for preparing high-purity praseodymium from industrial praseodymium raw material |
| abstract | The invention discloses a technique for preparing high-purity praseodymium from an industrial praseodymium raw material. According to the technique, a high-purity praseodymium (99.99%-99.9995%) product is prepared from industrial praseodymium (98%-99.9%). The technique consists of three fractional extraction systems: cerium-praseodymium/praseodymium-neodymium grouping separation, cerium/praseodymium separation and praseodymium/neodymium separation, wherein separation of cerium-praseodymium from neodymium is realized in an extraction section of the cerium-praseodymium/praseodymium-neodymium fractional extraction system; separation of cerium from praseodymium-neodymium is realized in a washing section of the cerium-praseodymium/praseodymium-neodymium fractional extraction system; the cerium/praseodymium separation fractional extraction system is directly serially connected to the praseodymium/neodymium separation fractional extraction system. Compared with an existing technique, the technique has the advantages that alkali consumption (including alkali for saponification and alkali for neutralization) is reduced by 13%, and acid consumption (including acid for washing and acid for reextraction) is reduced by 13%. |
| priorityDate | 2013-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.