http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109706310-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B1-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B11-00 |
| filingDate | 2018-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109706310-B |
| titleOfInvention | Low-temperature oxygen-enriched roasting pretreatment-leaching gold extraction process for carbon and arsenic-containing refractory gold ore |
| abstract | The invention discloses a low-temperature oxygen-enriched roasting pretreatment-leaching gold extraction process for carbon-and arsenic-containing refractory gold ores, wherein a rotary roasting furnace is adopted as low-temperature oxygen-enriched roasting main equipment, the roasting furnace is externally heated, a low-temperature oxygen-enriched roasting environment (300 ℃ plus 550 ℃) is established by controlling the air flow and the flow velocity in the rotary roasting furnace, the uniform roasting of materials is realized by the rotation of a furnace body, arsenic sulfide in the ores is decomposed, micro-fine gold particles wrapped in the arsenic sulfide are exposed and dissociated, and organic carbon in the ores is completely oxidized and eliminated; adding water into roasted calcine, mixing the slurry and cooling, leaching and extracting gold by adopting an environment-friendly gold leaching reagent CG505, recovering gold in a leaching solution, adjusting a barren solution to return to a leaching system, piling leaching residues as general solid wastes in a tailing pond, and absorbing harmful impurities such as arsenic oxide and the like remained in roasted smoke fully by adopting an alkali liquor efficient spraying method to realize standard discharge. |
| priorityDate | 2018-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.