| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e22fad13c1cf5ad1691d6d910794a202 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B82Y30-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B82Y40-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B35-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25C3-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B35-023
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B32-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-762 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B35-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B35-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-762 |
| filingDate |
2012-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2013-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_946c47c2bdb48ffba5d6cf09abc48ffa
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_59e4d3fec8e851f0921fc6262c9c445a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fceecae361c3fc531c41c8315cc35b7f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7bc1fccb3dbc7922a6207ae9ac023918
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f9cc6a858bff97cda365d22a1a058507 |
| publicationDate |
2013-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8557209-B2 |
| titleOfInvention |
Method for cyclically preparing elemental boron and coproducing sodium cryolite using sodium fluoborate as intermediate material |
| abstract |
A method for cyclically preparing elemental boron and coproducing sodium cryolite using sodium fluoborate as an intermediate material, which includes the following steps: A) adding hydrofluoric acid to boric acid or boron oxide to enable a reaction to form fluoboric acid; B) adding a sodium carbonate aqueous solution to the fluoboric acid to enable a reaction to form the sodium fluoborate; C) putting the sodium fluoborate into a reactor, adding aluminum to react with the sodium fluoborate to form the elemental boron and sodium cryolite; D) extracting the sodium cryolite, sending the sodium cryolite to a rotary reaction kettle together with concentrated sulphuric acid to enable a reaction to form hydrogen fluoride gas and aluminum sodium sulphate, collecting the hydrogen fluoride gas and dissolving it into water to obtain the hydrofluoric acid; E) recycling the obtained hydrofluoric acid to Step A to leach the boric acid or boron oxide. |
| priorityDate |
2012-02-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |