http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2091310-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_44d2fb38aace200fa0425f604a6542c5 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-22 |
| filingDate | 1994-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1997-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_082a1391e838a1d43ce34434b0cfa496 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ebbbf25e9e37a8fb1cd453e6b4dc92ff http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d9feb87a7382a274fc46ba054ef16540 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_71a602032f178209e68332aa9bdde0b0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b4ec577d299b6aa0cb93966bd7181605 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7fc43642c79614e822334787204c492d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_766e663b933f169fd2f29a27fe5aa22a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7005822dc74771451ebc5f1f99d7e093 |
| publicationDate | 1997-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2091310-C1 |
| titleOfInvention | Method of calcium fluoride producing |
| abstract | FIELD: chemical technology, inorganic chemistry. SUBSTANCE: method involves precipitation of sodium silicofluoride from fluoride-containing solution with sodium salt, hydrolysis of sodium silicofluoride with ammonia in an aqueous medium, preparing ammonium fluoride, chalk addition and producing the end product. About 15-70% of total ammonium fluoride solution amount is treated with sodium chloride and sodium fluoride deposit formed is separated from mother liquor and used for sodium silicofluoride precipitation. The parent chalk is treated with mother liquor and the obtained solid product containing unreacted chalk is separated from liquid and used for ammonium fluoride conversion. Method ensures to replace soda with more available sodium chloride. EFFECT: decreased reagent consumption and cost. 2 cl, 1 tbl |
| priorityDate | 1994-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.