http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2016501984-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-065 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B59-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J39-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J49-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B59-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 |
| filingDate | 2013-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2016501984-A |
| titleOfInvention | Method for recovering rare earth metals from solid minerals and / or by-products of solid mineral processing |
| abstract | The present invention relates to a technique for recovering rare earth metals from solid minerals and from by-products of solid mineral processing. The method for recovering rare earth metals includes acid leaching of solid minerals and solid mineral processing by-products pulverized to less than 100 μm using a mixture of sulfuric acid and nitric acid in a ratio of 6: 1 to 1: 1 parts by mass. Wherein the concentration of the acid mixture is less than 15% by weight and the liquid-solid ratio is 2: 1 to 6: 1 parts by weight. During leaching, a pulsed vacuum action is applied throughout the process of converting the rare earth metal compound to a solution to obtain residual solid mineral and solid mineral processing by-product residues. The solid mineral and solid mineral processing by-product residues are separated from the leach solution. The rare earth metal is separated from the leaching solution using an ion exchange filter or membrane filter. As a result, in a simplified manner, a higher recovery rate of rare earth metals into solution from both phosphogypsum and solid minerals containing rare earth metals can be obtained. |
| priorityDate | 2012-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.