http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2261227-C1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05C5-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D9-12 |
| filingDate | 2004-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2005-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0bcd52f58af183a2ef2b5aed3732268f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8b6c86e6cfe63cbd43a93e3b3bc8c6a1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_663c6fd3460642c5756356a06ca0689b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ec898f1bce829c164719feb66c1570b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b37485052b6e5c763d8a0cd6a53fb8a4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_84704d2953a08ffc700fd05913adc1c5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f062ea845ef4dc1423b1a456fd7cb89e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a4103cb09a92d113e8026df6bd7dd28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fa539d31689de3683303c98d9318e1dc |
| publicationDate | 2005-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2261227-C1 |
| titleOfInvention | Method of production of potassium nitrate |
| abstract | FIELD: chemical industry; methods of production of potassium nitrate. n SUBSTANCE: the invention is pertaining to the field of chemical industry, in particular, to methods of production of potassium nitrate and by-products on the basis of calcium chloride. The method provides, that solution of calcium nitrate extracted from nitrate drawing is neutralized up to pH 4-8, the sediment is separated from admixtures, and concentration of calcium nitrite in the cleared solution keep within the limits of 38-45 mass %. Neutralization of solution of calcium nitrate can be conducted using calcium carbonate or in succession - first - using calcium carbonate and then - using a water suspension of calcium hydroxide. The produced solution of calcium nitrate is treated with engineering potassium chloride in conditions of excess of calcium nitrate in respect to stoichiometry, preferably, at the temperature of 30°÷ 60°C during 40 ÷ 60 minutes at a molar ratio of calcium nitrate to potassium chloride - within the limits of 1.05 ÷ 1.2 : 2. Products of treatment are cooled at the temperature within the limits from 0 up to minus 10°C, the sediment is separated and flushed with a saturated solution of potassium nitrate. Produce potassium nitrate with contents of the main substance of 99.2 ÷ 99.8 %. The technical result is increased production of potassium nitrate up to 84-90 %. n EFFECT: the invention ensures increased production of potassium nitrate up to 84-90 %. n 5 cl, 4 ex |
| priorityDate | 2004-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.