http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2013128536-A1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B09B3-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B59-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B59-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D11-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B09B3-00 |
| filingDate | 2012-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-WO2013128536-A1 |
| titleOfInvention | Separation of rare earth elements from waste optical glass |
| abstract | It is an object to efficiently separate rare earth such as La and Gd from waste optical glass. Carbon is added to the pulverized optical glass waste, and reduction roasting is performed in a non-oxidizing atmosphere to reduce zinc oxide to zinc and to selectively remove zinc by volatilization. After the rare earth element remaining in the roasting residue is eluted with hydrochloric acid or nitric acid, Gd is extracted into the organic phase under an acidic condition of pH 2 or less using an extractant PC-88A (trade name, manufactured by Daihachi Chemical Industry Co., Ltd.). La remaining in the aqueous phase is extracted into an organic phase under acidic conditions of pH 3-4 using PC-88A (trade name, manufactured by Daihachi Chemical Industry Co., Ltd.). |
| priorityDate | 2012-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.