http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-297624-A5
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ed9f1af9631c0c6a9ed2482577410141 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-228 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-46 |
| filingDate | 1990-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_89be2f4a2ff1a602b0edbd3c72ae3b29 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86d99d6e30484ccf9990cb4ed568bedd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1dbac59d1d53c95b65e269e28e71d4e8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_41c7d14bbad57b0bc7fe653f0817f003 |
| publicationDate | 1992-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-297624-A5 |
| titleOfInvention | METHOD FOR THE PRODUCTION OF FLUOROLE CALCIUM SULPHATE DIHYDRATE IN THE PREPARATION OF PHOSPHORIC ACIDS FROM CALCIUM FLUORIDE-CONTAINING RAW PHOSPHATES AFTER THE WET PROCESS |
| abstract | A process for the preparation of low-fluorine calcium sulphate dihydrate in the extraction of phosphoric acid from calcium fluoride-containing crude phosphates by the Naszverfahren, wherein in a preliminary stage of the Aufschlusz of the crude phosphate with Naszprozeszphosphorsäure resulting CaF2-containing residue and anschlieszend the Ausfaellung a fluorine-poor Phosphorgipses by addition of sulfuric acid is made. The digestion of crude phosphate in the precursor is carried out with a Naszprozeszphosphorsaeure with a concentration of 25-40 * P2O5 while maintaining a temperature of 80C and a Phosphorsaeureueberschusses of about 300% compared to the stoichiometric amount necessary {calcium sulfate; calcium sulfate dihydrate; Phosphoric acid; Naszprozeszphosphorsaeure; Calcium fluoride; rock phosphate; Clean; Entfluorieren} |
| priorityDate | 1990-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.