| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bf11a3bfaa3518fedf953609ee4940aa |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S210-912
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-103
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-61 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D1-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G28-005
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-02 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-66 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B30-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D9-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G28-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D7-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D1-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-02 |
| filingDate |
2001-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81ed6e4f690ff37bc60744e94334b427
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dc6f17c6097079598c387abccfb32b38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_176684e3a7078bc0cf280de6c6f863c5 |
| publicationDate |
2002-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2431403-A1 |
| titleOfInvention |
Process for recovering arsenic from acidic aqueous solution |
| abstract |
A process for the recovery of arsenic trioxide from acid solutions, particularly the aqueous acid effluent produced by a gas-washing process in the pyrometallurgy of copper sulfide ores is provided. Generally, the process comprises concentrating the acid solution in one or more evaporators in series; crystallizing arsenic contained in the concentrated solution as arsenic trioxide crystals; filtering the crystallized solution to obtain a solid phase comprising impure arsenic trioxide crystals; and purifying the solid phase to obtain a purified crystal product comprising arsenic trioxide. The process produces a commercially salable arsenic trioxide product without producing any solid or liquid residues subject to special handling or treatment regulations. |
| priorityDate |
2000-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |