http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2503021-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8d9665587f1abcd1aed4d29d8b20d06b |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B19-18 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B30-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B9-04 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B19-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F27B5-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B30-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B9-04 |
| filingDate | 2003-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2011-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2b422c1ee38f8aa6f7b46c9d0ecf50b7 |
| publicationDate | 2011-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2503021-C |
| titleOfInvention | The non-pollution process of extracting arsenic in vacuum and the equipment thereof |
| abstract | A low pollution process for extracting arsenic in vacuum, including: heat and keep the smelting chamber to a temperature of 100-300°C under the reduced pressure lower than 50Pa to remove the water vapor and some dust; then heat and keep the temperature of the melting chamber and condensing chamber to 300-500°C to remove volatile arsenic sulfide; maintain the condensing chamber temperature while heating and keeping the temperature of the smelting chamber to 500-600°C to remove the decomposed gas sulfur; heat the smelting chamber to 600-700°C but reduce the temperature of condensing chamber to 270-370°C and keep them still to obtain arsenic; now stop heating and introduce gas, take off arsenic and discharge the slag. The present invention also provides an equipment for carrying out the said process which comprises a heating device, a smelting device, a temperature-keeping condenser, a liquid-pressure driven discharging device, a dust collector, an automatic temperature-controlling device, a vacuum measure device and a vacuum pump. The present invention reduces arsenic pollution and solves the long-term problem for safe-production, it also simplifies the applied process. |
| priorityDate | 2002-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.