http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2018090889-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6bd0cdbc5c67cf4957ed83c89140748e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B23-0461 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B23-043 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-44 |
| filingDate | 2017-01-11^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_10c88ee27b5e0026103d4e15d879c47e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_101c5b7efbde65f3e6cb856d39a06321 |
| publicationDate | 2018-06-14^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2018090889-A |
| titleOfInvention | Method for hydrometallizing nickel oxide ore |
| abstract | PROBLEM TO BE SOLVED: To improve a nickel recovery rate in a dezincing step for removing zinc contained in ore in a hydrometallurgical method by high pressure acid leaching of nickel oxide ore. SOLUTION: A leaching step S1 in which nickel oxide ore is acid leached under high pressure to obtain a leaching solution, and a neutralized starch produced by adding a neutralizing agent to the leaching solution is removed to obtain a solution after neutralization. Summing step S3, dezincification step S4 for removing zinc starch produced by blowing hydrogen sulfide gas into the post-neutralization solution to obtain a post-dezincification solution, and adding a sulfurizing agent to the post-dezincification solution In the hydrometallurgy method comprising the nickel recovery step S5 for recovering nickel as sulfides, in the above blowing, all the reaction tanks are sequentially flowed through the plurality of post-neutralization liquids in a plurality of reaction tanks connected in series. The amount of hydrogen sulfide gas blown into the second and subsequent reaction tanks is adjusted to 50% or more and 90% or less with respect to the total amount of hydrogen sulfide gas blown into the reactor. [Selection] Figure 1 |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-7095606-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020149122-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2020114936-A |
| priorityDate | 2016-11-30^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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