http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104477943-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D5-06 |
| filingDate | 2014-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104477943-B |
| titleOfInvention | A kind of method of preparing potassium sulfate |
| abstract | The invention discloses a kind of method of preparing potassium sulfate, comprising: 1) potassium ores, potassium chloride, sodium sulphate and solvent are stirred and obtain solidliquid mixture; 2) regulating the solid-liquid volume ratio of solidliquid mixture is 1:3～5, adds floating agent to carry out flotation, then the flotation froth obtaining is filtered, is separated, and obtains picromerite and the first mother liquor; 3) picromerite obtaining and potassium chloride are pressed to the mass mixing of 1.6～2.0:0.8～1.2, and add cleaning solution by the Na in mixture + Substantially clean, then filter, separate, obtain solid phase and the second mother liquor; 4) by step 3) in solid phase add fresh water with the solid water mass ratio of 1.0～1.5:1, under 60～70 DEG C of conditions, transform 1～1.5h, then cold filtration, separation, obtains potassium product and the 3rd mother liquor. The present invention can make full use of salt lake sodium sulfate byproduct, and in production process, has saved freshwater resources, shortens growth cycle, enhances productivity, and has reduced one-tenth and produced cost. |
| priorityDate | 2014-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.