http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2668467-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3492a7406879265b1f567f37d98dbbaf |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G27-003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G25-003 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G27-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G25-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-14 |
| filingDate | 1991-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6c9976b4cf58de5aab22e42f7d7dd7f8 |
| publicationDate | 1992-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | FR-2668467-A1 |
| titleOfInvention | PROCESS FOR SEPARATING HAFNIUM / ZIRCONIUM BY LIQUID / LIQUID EXTRACTION WITH PRE-PURIFICATION OF ZIRCONIUM. |
| abstract | A process is provided for producing nuclear grade zirconium by separating the zirconium from hafnium. The process employs an aqueous feed of ZrOCl2 in the presence of thiocyanate, an organic solvent and an acid, and a series of high mass transfer efficiency pulse columns in which iron extraction, hafnium extraction, Zirconium scrubbing, hafnium washing, and zirconium hafnium thiocyanate recovery processes required to produce substantially hafnium-free nuclear grade zirconium. A feed zone mixer-separator separates the thiocyanate and zirconium injection points and enables the pre-purification of the zirconium before the main purification operation. All of the thiocyanate and of the washed solvent is regenerated. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111041241-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2835260-A1 |
| priorityDate | 1990-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 60.