http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103395838-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G31-00 |
| filingDate | 2013-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103395838-B |
| titleOfInvention | A kind of high purity potassium metavanadate and preparation method thereof |
| abstract | The invention provides a kind of high purity potassium metavanadate and preparation method thereof.Described method comprises: add desiliconizing agent to containing in vanadium leachate, removing insolubles, obtains low-silicon and low-phosphorous containing vanadium scavenging solution; Add solubility ammonium salt to low-silicon and low-phosphorous carry out precipitation containing vanadium scavenging solution, obtain ammonium vanadate; Dissolve ammonium vanadate with potassium hydroxide, salt of wormwood or saleratus, removing insolubles, obtain potassium vanadate solution, evaporative crystallization obtains by weight percentage containing the KVO being no less than 99.5%n 3 , no more than 0.01% Ca, the Cr of no more than 0.01%, Si, the Fe of no more than 0.01%, the high purity potassium metavanadate of no more than 0.2%Na of no more than 0.01%.Advantage of the present invention comprises: only need a step removal of impurities, once return and moltenly can obtain the high purity potassium metavanadate that purity is not less than 99.5%, and technique be simple and easy to, easy to operate, wide accommodation, cost are low. |
| priorityDate | 2013-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.