| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_76a948cc16c38aeca253002778fc3383 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B15-0097
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B15-0078
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B15-0021 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B15-00 |
| filingDate |
1974-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1975-04-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_218de18ee048e33b69b7d7687b76dbf8 |
| publicationDate |
1975-04-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3880650-A |
| titleOfInvention |
Recovery of copper from chalcopyrite |
| abstract |
Copper concentrate is mixed with iron and a fusible salt or fusible salt mixture which is molten at the roasting temperature. The mixture is roasted in a non-oxidizing atmosphere at a temperature below 475*C (preferably between 350*C-390*C) to produce a product containing free copper and pyrrhotite. The salt acts as a solvent for the reaction and enables copper to be recovered economically from copper concentrate without the evolution of sulfide pollutants into the atmosphere. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4110106-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5074910-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4149880-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8470271-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011058997-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5849172-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5104445-A |
| priorityDate |
1974-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |