http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2259321-C2
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G35-00 |
| filingDate | 2003-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2005-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_952f2aa56b4666f49dbb9f103c9ebc50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_16cacf2b219838153c91ac8402efe678 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a384f9f07dd2ea00500ef1e2f532a8e9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33ccefae7ec5807143710c67eef0c700 |
| publicationDate | 2005-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2259321-C2 |
| titleOfInvention | Tantalum pentoxide preparation method |
| abstract | FIELD: industrial inorganic synthesis. n SUBSTANCE: invention relates to the area of hydrochemical fluoride processing of tantalum stock into pure tantalum an niobium compounds. Potassium fluorotantalate is heated to 220-250°C 1-3 times with intermediate coolings to 70-80°C to achieve 85% of product with fineness -100+40 μm. Product is then subjected to ammonia treatment at ambient temperature followed by hydrochloric acid treatment. Ammonia and hydrochloric acid treatments are performed 2-4 times each. n EFFECT: achieved full decomposition of potassium fluorotantalate to form granulated precipitate, increased purity of tantalum pentoxide, moderated purity requirements for starting material and reagents, and reduced corrosion of equipment. n 1 dwg, 1 tbl |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2611869-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103274468-A |
| priorityDate | 2002-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.