http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111072023-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E60-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B32-215 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M10-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01M4-587 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M10-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M4-587 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B32-215 |
| filingDate | 2019-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111072023-B |
| titleOfInvention | Method for recycling graphite from scrapped lithium ion battery |
| abstract | The invention relates to a method for recycling graphite from a scrapped lithium ion battery, which comprises the following steps: carrying out alkaline leaching and acid leaching on the mechanically crushed lithium ion full-cell waste to obtain a graphite crude product and a filtrate containing Co, Fe, Ni and Mn metals; sieving the crude graphite product to remove large-particle Cu generated in mechanical crushing of the waste lithium ion battery, residual diaphragms after air separation and large-particle Al which is not subjected to separation reaction, so as to obtain primarily purified graphite; carrying out secondary acid leaching treatment on the primarily purified graphite to remove small-particle Fe and Cu metal impurities in the graphite; stirring and washing the reaction product to be neutral, and performing suction filtration and drying to obtain secondary purified graphite, wherein the acid filtrate after suction filtration can be reused in the third step; and carrying out heat treatment on the obtained secondary purified graphite in an air atmosphere to remove the conductive agent and the binder in the secondary purified graphite, thus obtaining the final graphite with higher purity. The method has the advantages of simple process, low cost and energy consumption, and excellent stability of the recovered graphite. |
| priorityDate | 2019-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.