http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-269627-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b1a8c1642aeb028cc131abb7c9d20817 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-50 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-77 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F17-00 |
| filingDate | 1987-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1548e405d207b85f1081b3c97e69d69b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d4e5d3f86c7a41ec6a1c6d9497965447 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f6a053a5233b38fa6f84ef4347ce4021 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_665bda72f686b8754317194669e2796b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33909e428217da6dd7aea989cab7b7ba |
| publicationDate | 1989-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-269627-A1 |
| titleOfInvention | METHOD FOR RECOVERING RARE CONNECTIONS |
| abstract | The invention relates to the recovery of rare earth compounds from washes and aqueous suspensions, which are obtained as waste products in the production and use of red phosphors. According to the invention, the red phosphor particles contained in the wash washes and aqueous suspensions are separated by filtration and, after comminuting the filter devices, are separated from the filter material by washing with water. The contaminated red phosphorus concentrate is digested with nitric acid. Impurities on Fe3 and Al3 are precipitated from the resulting rare earth nitrate solutions by blunting with ammonia until p H. The rare earths are separated from other impurities by precipitation as hydroxides of alkaline earths and by transformation as oxalates. The resulting pure rare earth oxalates can be used directly or after conversion to oxides for the preparation of new red phosphors. |
| priorityDate | 1987-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.