http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20120063069-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4c30e8a2248ee5bef57f852132563d86 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-4604 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25C1-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25C7-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25C1-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25C3-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25C7-04 |
| filingDate | 2010-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_313eb3091412585d3ecbd87a956a052d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2312d4adda26133fb06ee67cc3a7efb5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_49b51e50af68323b8df921c9b5d3a2fe http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a6417c59edf3c9b4e4f8dc8460560cc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2ee5958cf5dbc86c02565e5f03ad5e66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d0d9f2748556bacc5427f9e7c656ec49 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bf4f17cf3edd6e1b9d0b20bed5d48a0f |
| publicationDate | 2012-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20120063069-A |
| titleOfInvention | Process for producing high purity lithium hydroxide and lithium carbonate from brine |
| abstract | The present invention comprises the steps of precipitating and removing impurities of magnesium, boron and calcium contained in the brine by adding NaOH to the brine; Injecting phosphoric acid or a phosphate compound into the remaining filtrate after the impurities are removed and heating the precipitate to recover lithium contained in the filtrate with lithium phosphate; Dissolving the recovered lithium phosphate in phosphoric acid to prepare an aqueous lithium phosphate solution; Preparing an aqueous lithium hydroxide solution by electrolyzing the prepared lithium phosphate aqueous solution with an electrolysis device in which a positive electrode cell and a negative electrode cell are partitioned by a cation exchange membrane; A method of recovering high purity lithium hydroxide from brine, comprising recovering solid lithium hydroxide by heating the prepared lithium hydroxide aqueous solution; Adding NaOH to brine to precipitate and remove impurities of magnesium, boron and calcium contained in the brine; Injecting phosphoric acid or a phosphate compound into the remaining filtrate after the impurities are removed and heating the precipitate to recover lithium contained in the filtrate with lithium phosphate; Dissolving the recovered lithium phosphate in phosphoric acid to prepare an aqueous lithium phosphate solution; Preparing an aqueous lithium hydroxide solution by electrolyzing the prepared lithium phosphate aqueous solution with an electrolysis device in which a positive electrode cell and a negative electrode cell are partitioned by a cation exchange membrane; Reacting the prepared lithium hydroxide aqueous solution with CO 2 gas or sodium carbonate to precipitate lithium carbonate; It provides a high-purity lithium carbonate recovery method from brine comprising the; filtering the precipitated lithium carbonate to recover lithium carbonate. According to the present invention, impurities can be removed from the brine at a low cost while minimizing the loss of lithium, and the salt-dissolved lithium is precipitated using lithium phosphate having low solubility, thereby eliminating the need for evaporation and concentration of the brine for a long time and eco-friendly. In addition, economically, lithium hydroxide and lithium carbonate can be produced with high purity. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110357055-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101674393-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110357055-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101674394-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20160002573-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20160002572-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3290393-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2684384-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2016182337-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2683080-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2016175613-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3326974-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102382209-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10759671-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20160129657-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20160133860-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10661227-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021145488-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20210036844-A |
| priorityDate | 2010-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 78.