http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EA-015190-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_685bf42c4de8435af030397600efb55f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-0081 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D13-00 |
| filingDate | 2010-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d1edd7d2e72f444ca644f0b1e1b6af0 |
| publicationDate | 2011-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EA-015190-B1 |
| titleOfInvention | METHOD AND DEVICE FOR OBTAINING ALKALINE METAL FERRATES |
| abstract | The invention relates to methods for producing alkali metal (predominantly sodium) ferrates, containing iron in oxidation states (VI), (V) and (IV), by the solid-phase reaction of an activated iron compound (oxide or hydroxide) with an alkali metal peroxide at temperatures above 200 ° WITH. Activated oxide (hydroxide), for example, FeO, is obtained by keeping at a temperature above 70 ° C a mixture of powdered FeO and a composite activator, whose content in the mixture is greater than 1 wt.%. The activator is a mixture of powders of sodium difluoride NaHF (potassium or ammonium) and sodium hexafluorosilicate NaSiF, and in the activator the mass ratio of the difluoride of alkali metal and sodium hexafluorosilicate is in the range of 1: 3-3: 1. The activated oxide FeO and sodium peroxide NaO is mixed in a molar ratio of 1: 4 (mass ratio ~ 1: 2) and the mixture obtained is subjected to tabletting. The resulting tablets are continuously fed to a conveyor belt moving through a slit furnace with a hot zone (synthesis zone) located in the middle of the furnace. The hot zone has a constant temperature in the range from 210 to 250 ° C, and the length of this zone is from 1: 7 to 1:10 of the total length of the furnace. When moving along the furnace along with the ribbon, the tablets are in the atmosphere of air purified from CO and water (oxygen, inert gas) for a time sufficient to complete the reaction. To prevent tablets from sticking to the metal tape, it is covered with a polymer film that can withstand the synthesis temperature (for example, a fluoroplastic-4 film). When exiting the furnace, tablets of ferrata are poured into hermetic receiving containers. Instead of oxide FeO in the synthesis, you can use other oxides and hydroxides of iron (II) and (III). |
| priorityDate | 2010-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 65.