http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2326081-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ab70b0045d476e771b32c120c42c2b77 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_818fbbe2614febeac2cb2879f6a224e9 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B15-0008 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B15-0002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B15-0071 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B03D1-025 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B15-00 |
| filingDate | 2000-11-14^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3b24f21890ffb0ade25e739f5dd8d0fb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4e4e382408e74f5b922d3c9be01f2167 |
| publicationDate | 2001-05-24^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2326081-A1 |
| titleOfInvention | Recovery of copper values from copper ores |
| abstract | Copper values are efficiently recovered from a copper ore, including secondary sulfides, by first crushing the ore to a particle size P-80 of about 1 to 2 inches, then grinding the so crushed ore to a particle size P-80 of between Tyler 4 mesh and 20 mesh, and then classifying the ground ore into a fines fraction of less than 65 mesh and one or more coarse fractions of more than 65 mesh. The fines are then leached or subjected to flotation to form a concentrate which is leached to form a pregnant leach solution. In parallel, the coarse fraction or fractions are leached also to form a pregnant leach solution. The leaching operations are carried out with ferric sulfate lixiviant at atmospheric pressure and elevated temperature. During leaching ferric sulfate is reduced to ferrous sulfate. The pregnant leach solutions are then subjected to solvent extraction to recover the copper values and subsequently to electrowinning to produce copper metal. During the solvent extraction operation, free sulfuric acid is produced and is then used together with oxygen to oxidize the ferrous sulfate produced during the leaching steps back to ferric sulfate with is then re-used in the leaching of the fines and coarse fractions. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007115377-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8871162-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2016090458-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1320137-C |
| priorityDate | 1999-11-24^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Showing number of triples: 1 to 57 of 57.