http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20070032317-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G25-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G27-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G25-003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G27-003 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G27-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G25-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G27-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G25-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-00 |
| filingDate | 2005-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2007-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20070032317-A |
| titleOfInvention | Separation and Purification Methods of Hafnium and Zirconium |
| abstract | The present invention,n n n Introducing a mixture of ZrCl 4 and HfCl 4 in vapor form into a continuous extraction distillation column (1),n n n The step of selectively absorbing the ZrCl 4 and HfCl 4 vapor, ZrCl 4 and HfCl 4 in an extraction solvent for reverse circulation into a vapor stream from the distillation column (2),n n n ZrCl 4, further comprising: rich, and separate the liquid or gas phase mixture of ZrCl 4 and HfCl 4 (3),n n n HfCl 4, further comprising: rich, and separate the liquid or gas phase mixture of ZrCl 4 and HfCl 4 (4),n n n Hydrolyzing the mixture obtained in step (4) in an aqueous solution of inorganic acid to form an aqueous solution comprising 7 to 12 mol / l of acid (5),n n n Passing the solution obtained in step (5) through an anion-exchange resin (6) andn n n A process for the separation of hafnium and zirconium from ZrCl 4 and HfCl 4 containing mixtures comprising eluting and recovering a hafnium-rich fraction (7).n n n n Zirconium, hafnium, continuous extraction distillation column, extraction solvent, anion exchange resin, ion interaction. |
| priorityDate | 2004-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.