http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109179504-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-61 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-32 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G31-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G31-00 |
| filingDate | 2018-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109179504-B |
| titleOfInvention | Method for preparing large-particle-size ammonium metavanadate |
| abstract | The invention relates to a method for preparing large-particle-size ammonium metavanadate, which comprises the following steps: adding an ammonium metavanadate solution into a crystallizer, and controlling the cooling rate to be 0.1-2 ℃/h until the temperature of the solution in the crystallizer is reduced to 25-35 ℃; and after the temperature of the solution reaches 25-35 ℃, continuously adding an ammonium metavanadate solution into the crystallizer, controlling the cooling rate to be 3-5 ℃/h, keeping the temperature of the solution in the crystallizer at 25-35 ℃, and crystallizing to obtain spherical ammonium metavanadate with the particle size of more than 200 mu m. According to the invention, spherical ammonium metavanadate products with the granularity of more than 200 mu m are prepared by controlling conditions and parameters in the cooling crystallization process of the ammonium metavanadate solution, and the obtained products have uniform size, high sphericity and high particle strength, and can meet the requirements of the vanadium pentoxide product granularity in the fields of vanadium alloys and vanadium electrolytes. Meanwhile, the equipment has high automation degree, the process operation is simple, the industrial production is facilitated, and the method has a good application prospect. |
| priorityDate | 2018-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.