http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109604615-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F2998-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F2999-00 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F8-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-0577 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-057 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F8-00 |
| filingDate | 2018-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109604615-B |
| titleOfInvention | Method for preparing sintered neodymium-iron-boron permanent magnet at low cost |
| abstract | The invention relates to a method for preparing a sintered neodymium-iron-boron permanent magnet at low cost, which comprises the following steps: collecting sintered neodymium iron boron processing waste materials, and removing pollutants on the surfaces of the neodymium iron boron processing waste materials; removing an oxide layer and residual dirt on the surface of the neodymium iron boron processing waste; washing neodymium iron boron processing waste with hot water and drying; collecting neodymium iron boron waste powder by using a sealed container, and introducing nitrogen or argon for protection; adding 40-100ml/kg of solvent oil into a sealed container, and stirring for 30-180 minutes to dissolve the neodymium iron boron waste powder in the solvent oil; replacing air in the sealing press with nitrogen or argon to control oxygen concentration in the sealing press between 0-50 ppm. The invention fully utilizes the waste materials generated in each procedure in the production process of the sintered neodymium iron boron, including the neodymium iron boron waste magnet, the stub bar and the material skin, and realizes 100 percent recovery of the waste materials in the production process. |
| priorityDate | 2018-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.