| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a3954f30a7bc175a94d8e8717f532b17 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D7-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D7-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D15-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D21-01 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D21-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D15-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D7-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D7-24 |
| filingDate |
2019-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2020-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6f68a1f2dd3eaef904bd0566de602e00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_777ce5c5e6d979c078e8733c6fb641a4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_47ea1a440d95acf9892b57dc79cbd01e |
| publicationDate |
2020-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-102085016-B1 |
| titleOfInvention |
Purification of lithium carbonate by removing sulfate ion impurities |
| abstract |
According to the present invention, lithium carbonate is dissolved in low temperature water at high solids concentration ratio (S / L) to remove insoluble matters by filtration to remove sulfate ions firstly, and a precipitant for forming sulfate ions and water insoluble salts is added. There is provided a method for purifying lithium carbonate that removes sulfate ions by secondary removal of precipitated water-insoluble sulfate by filtration to remove sulfate ions and heating the resulting solution to recrystallize lithium carbonate. The lithium carbonate refining method of the present invention can provide a high-purity lithium carbonate that can be utilized as a battery-grade lithium carbonate by economically and efficiently removing impurity sulfate ions from lithium carbonate recovered from commercial lithium carbonate or spent lithium batteries. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102253829-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102190786-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114014342-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20200090741-A |
| priorityDate |
2019-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |