http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2010104438-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05D3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05C5-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05C1-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-38 |
| filingDate | 2008-07-09^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2011-08-20^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2010104438-A |
| titleOfInvention | METHOD FOR PRODUCING GRANULATED INDUSTRIAL NITROGEN-CALCIUM FERTILIZER |
| abstract | 1. The method of obtaining granular industrial nitrogen-calcium fertilizer by decomposing the mineral salts of calcium cations with nitric acid and processing the obtained melt, characterized in that! from the reaction mixture obtained by the decomposition of mineral salts of calcium cations with nitric acid, under the action of the main agent at pH from 6 to 10 and at a temperature of from 65 to 120 ° C, unwanted cations precipitate, they separate, in the resulting solution the ratio Ca2 +: NH4 + is adjusted to values from 4.5 to 9.4 by adding an aqueous solution of nitric acid and gaseous and / or liquid ammonia and / or ammonium nitrate; the solution thickens, a superheated solution having a temperature of from 100 to 170 ° C is injected into the granulator, a powder phase is added, granulated at a temperature of from 40 to 135 ° C and adjusted to a temperature of the obtained granulate not exceeding 110 ° C, the granular material is sieved, a suitable fraction granular fertilizers are separated, too large a fraction is crushed and together with too small a fraction is cooled and returned to the granulator. ! 2. The method according to claim 1, characterized in that! precipitation of unwanted cations is carried out at a pH of from 6.5 to 8.5 and at a temperature of from 65 to 90 ° C. ! 3. The method according to claim 1, characterized in that! the main agent is gaseous ammonia and / or aqueous ammonia and / or a solid and / or aqueous solution of an alkali metal hydrate and / or calcium oxide hydrate. ! 4. The method according to claim 1, characterized in that! to the reaction mixture obtained by the decomposition of mineral salts from calcium cations with nitric acid, add an aqueous solution of hydrogen peroxide in an amount necessary for oxidation |
| priorityDate | 2007-07-09^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Showing number of triples: 1 to 45 of 45.