http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101700338-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-228 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-231 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-231 |
| filingDate | 2010-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-101700338-B1 |
| titleOfInvention | Method for producing phosphoric acid |
| abstract | The present invention relates to a process for the production of phosphoric acid, comprising: attacking phosphorus by sulfuric acid at 70 ° C to 90 ° C to form the first calcium sulfate dihydrate crystal slurry, wherein the acid aqueous phase of the slurry An unreacted P 2 O 5 content of from 38 to 50 wt% and an SO 3 content of greater than 0.05 wt% to less than 0.5 wt%; Converting said first slurry by heating at a temperature of at least 90 < 0 > C to produce a second slurry of calcium sulfate hemihydrate crystals; And separating the calcium sulfate half-hydrate filter cake with the product phosphoric acid having a free SO 3 content of less than 2%, in a second slurry. |
| priorityDate | 2009-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.