http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-3017299-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6bd0cdbc5c67cf4957ed83c89140748e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D11-0492 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B59-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B59-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-26 |
| filingDate | 2017-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9c5368e063ba8fd78d582d417a3338c9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c66a1ba23a7a4a1226fc82687a4636d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bdda9471c85d72e7bf9e4dd4c9f1f4cd |
| publicationDate | 2017-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-3017299-A1 |
| titleOfInvention | Scandium purification method |
| abstract | In separating scandium and thorium from a leachate obtained by adding sulfuric acid to a nickel oxide ore containing scandium and thorium, scandium is recovered from only one system so as to simplify the process and achieve a high yield at the same time. The method according to the present invention comprises: an extraction step S1 for treating a nickel oxide ore containing scandium and thorium with sulfuric acid to give an acidic solution (a feed solution for extraction), and then solvent-extracting the feed solution with the use of a scandium extractant containing an amide derivative to thereby divide the feed solution into an organic extract (a first organic phase) containing scandium and thorium and a liquid extract (a first aqueous phase) containing impurities; and a washing step S2 for adding sulfuric acid to the organic extract (the first organic phase) and thus dividing the same into washed organic matters (a second organic phase) containing thorium and a washed liquid (a second aqueous phase) containing scandium. In this method, the pH value in the extraction step S1 is regulated to 1.0-3.0 inclusive and the pH value in the washing step S2 is regulated to 1.0-2.5 inclusive. |
| priorityDate | 2016-03-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 68.