http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2020114936-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6bd0cdbc5c67cf4957ed83c89140748e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-08 |
| filingDate | 2019-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fdb42538125c6cd023c365de09681ca3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b0e68b0bef4297975364b51c7469853 |
| publicationDate | 2020-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2020114936-A |
| titleOfInvention | Method for producing nickel-cobalt mixed sulfide from nickel oxide ore by hydrometallurgy |
| abstract | PROBLEM TO BE SOLVED: To provide a hydrometallurgical method capable of increasing the nickel recovery rate by reducing the amount of nickel coprecipitated with impurities. SOLUTION: A leaching step S1 for leaching a nickel oxide ore slurry under high temperature and high pressure with sulfuric acid to obtain a leaching slurry, and a solid-liquid separation step for separating a leaching residue from the leaching slurry to obtain a leaching solution containing impurities together with nickel and cobalt. S2, a neutralization step S3 in which the neutralized precipitate produced by adjusting the pH of the leachate is separated by sedimentation to obtain a neutralized final solution containing nickel and cobalt, and the neutralized final solution is treated with hydrogen sulfide. A dezincification step S4 for obtaining a dezincified final solution by separating sulfides such as zinc obtained by the above step, and a mixed sulfide containing nickel and cobalt obtained by treating the dezincified final solution with hydrogen sulfide. A method for producing a nickel-cobalt mixed sulfide including the nickel recovery step S5, wherein the Fe(III) concentration of the neutralized final liquid is adjusted to 0.18 g/L or less. [Selection diagram] |
| priorityDate | 2019-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.