| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8b15fc00099de41431d5e645ace9290f |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B19-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B30-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B11-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B11-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B1-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B11-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B11-08 |
| filingDate |
1996-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8d9cad98085763f017811338e0ae45df |
| publicationDate |
1998-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2183124-A1 |
| titleOfInvention |
Process for obtaining access to refractory gold and/or silver in arsenical ore |
| abstract |
A process for obtaining access to refractory gold and/or silver carried by arsenopyrites and/or arsenical pyrites comprises first heating dry ore concentrate containing arsenopyrites and/or arsenical pyrites at a temperature from 450°C to 850°C in an oxidizing atmosphere of sulfur devoid of free oxygen to volatile the larger part of arsenic from the starting ore and then roasting the non-volatile residue at a temperature of 850°C or less leaving a residue of iron oxide substrate from which gold may be retrieved by cyanide extraction. |
| priorityDate |
1996-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |