http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105253867-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-2295 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-2204 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-466 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-226 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-46 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-38 |
| filingDate | 2015-09-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105253867-B |
| titleOfInvention | A kind of production method of phosphoric acid by wet process by-product αsemiwatergypsum |
| abstract | The invention discloses a kind of production method of phosphoric acid by wet process by-product αsemiwatergypsum.Ground phosphate rock and part dilute sulfuric acid are first added in extraction tank by this method, carry out extractive reaction, and the clear liquid that obtained mixed slurry is isolated sends into sour storehouse as finished product phosphoric acid, and the solid isolated is transferred to together with remaining mixed slurry in brilliant groove.Sulfuric acid and crystal modifier are added into turn brilliant groove, carry out turning brilliant reaction 1.5~7.5 hours at 60 DEG C~130 DEG C, obtained nitration mixture slurry carries out separation of solid and liquid, and solid can be dried into land plaster, and also can directly be added water without baking step is made the plasterings such as plasterboard, gypsum block, gypsum component.The present invention improves traditional handicraft and prior art, eliminates the content of phosphorus in the discharge of ardealite and acid non-soluble substance, reduction gypsum, improves the utilization rate of phosphorus, make full use of the heat of dilution of the concentrated sulfuric acid, energy-saving and emission-reduction. |
| priorityDate | 2015-09-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.