http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103332731-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_411c14781a3cbe50f7165af8f1395915 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G19-04 |
| filingDate | 2013-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6035fb8e478a1b3f5793af1cea44bbcf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f954b39fad33998b88fc30e4700e2c4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a24ff4be489563cd6c59ac8a87d6e53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a4a460b336a999912032d5518bcb9f90 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_851b46bf9d0654b61632d0f49a1dd175 |
| publicationDate | 2014-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103332731-B |
| titleOfInvention | Method for preparing stannous fluoride by sing hydrofluoric acid |
| abstract | A method for preparing stannous fluoride by sing hydrofluoric acid. The method uses hydrofluoric acid and stannous oxide as raw materials, and includes the following steps: (1) first adding hydrofluoric acid into a reactor, staring to stir, then adding a tin granular package in the equivalent of 8-12 wt% of the theoretical amount of stannous oxide, then adding the theoretical amount of stannous oxide into hydrofluoric acid at a speed of 15-25g / min, after material addition, continuing the reaction for 15-30 min, and after the reaction, removing the tin granular package; and from the addition of stannous oxide to the end of the reaction, introducing nitrogen into hydrofluoric acid, wherein the flow is controlled that no liquid spills; and (2) heating to 75-95 DEG C, maintaining the temperature, stirring for concentrating, and conducting vacuum drying to obtain a finished product. The stannous fluoride prepared by the method provided by the invention has low cost, high product yield and high purity. |
| priorityDate | 2013-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.