http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109110826-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B17-0232 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D5-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G53-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G53-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B17-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D5-14 |
| filingDate | 2018-09-05^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-11-06^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-11-06^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109110826-B |
| titleOfInvention | Production method of battery-grade nickel sulfate |
| abstract | The invention relates to a production method of battery-grade nickel sulfate, which comprises the following steps: a) leaching nickel sulfide: leaching nickel sulfide under the conditions of concentrated sulfuric acid, high temperature and micro negative pressure, dissolving in water, and performing solid-liquid separation to obtain a nickel sulfide leaching solution and nickel sulfide leaching residues; b) removing impurities: neutralizing residual acid with hydroxide, removing impurities, extracting, deoiling, evaporating and crystallizing to obtain battery-grade nickel sulfate product; c) and (3) sulfur recovery: washing and drying the nickel sulfide leaching residues, and producing and recovering high-purity commercial sulfur through a hot melting filtering process. The method adopted by the invention has the advantages of high nickel leaching rate, short required flow, low energy consumption, capability of quickly and efficiently realizing the production and slagging-free of the elemental sulfur, and contribution to maximization of resource recycling benefit. |
| priorityDate | 2018-09-05^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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