http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2645176-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_748107463af258c025bdfa3f525fae30 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B11-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B11-08 |
| filingDate | 1990-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_846709da2e546807cafd1547ff7fa020 |
| publicationDate | 1990-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | FR-2645176-A1 |
| titleOfInvention | MANUFACTURE OF PEROXIDES |
| abstract | Gold and silver are usually obtained by stirring leaching of the ore, after grinding, with an aqueous alkaline cyanide solution containing oxygen. Problems that can arise during leaching include long leach times, maintaining sufficient dissolved oxygen, and high cyanide consumption, which can result in slow or incomplete extraction of the precious metal. . The addition of small amounts of poorly soluble inorganic peroxides and in particular of calcium peroxide, for example at 0.1 to 20 parts w / w per 1000 parts of ore, provides an effective means of adjusting and maintaining appropriate levels. of dissolved oxygen and may provide one or more of the benefits of increasing or accelerating the extraction of the precious metal as well as reducing the consumption of cyanide. Insoluble divalent metal peroxides can be produced at a controlled rate by the leaching process by controlling the dissolved oxygen and pH levels in the leaching process and using the controlled levels to regulate the rate of release. addition of hydrogen peroxide to the divalent metal compound as well as the molar ratio of the two reactants. |
| priorityDate | 1989-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.