http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0396043-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_64c646df6ba6e35dbd2ed120542598d2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-45 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05D3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05B7-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-45 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05D3-02 |
| filingDate | 1990-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e6ad890327f76aaa9d07794cb736ea8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2a5024d25b59f01b0c55418ff8c3e764 |
| publicationDate | 1990-11-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0396043-A2 |
| titleOfInvention | Method for the production of potassium magnesium phosphate |
| abstract | Process for the preparation of potassium magnesium phosphate hexahydrate by reacting calcium dihydrogen phosphate with potassium sulfate and a basic magnesium compound in two stages, isolating the gypsum produced as a second solid, which comprises the combination of the following measures: - The potassium sulfate required in the first stage is introduced into the second stage before or together with the addition of the magnesium oxide and / or hydroxide and after the crystallization and separation of the potassium magnesium phosphate with the mother liquor to the first stage, where the mother liquor according to the rate of reaction to a slurry of the finely divided calcium dihydrogen phosphate in fully reacted sludge which has already formed gypsum as inoculum and is added to the wash filtrate of the gypsum, the practically fully reacted sludge running off from the first stage is divided into the part which is returned for slurrying the calcium dihydrogen phosphate and the part which, after the gypsum has been separated off, provides the potassium dihydrogen phosphate solution required in the second stage, - The clarified potassium dihydrogen phosphate solution from the first stage is together with or immediately after the addition of the magnesium oxide and / or hydroxide and the potassium sulfate in the from the end of the second stage metered in at the entrance of the reacted sludge which already contains potassium magnesium phosphate which has already formed as inoculum, ammonia is introduced as a crystallization stimulator in the second stage, - The fully reacted sludge from the second stage is divided into the part which returns to its entry and the part which is filtered by filtering into the potassium magnesium phosphate hexahydrate to be carried out as product, which is not washed with water before drying, and into mother liquor to be led to the first stage is broken down. |
| priorityDate | 1989-05-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 70.