http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108862369-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-64 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G9-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B32-50 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B32-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G9-02 |
| filingDate | 2018-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-02-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108862369-B |
| titleOfInvention | Method for producing nano zinc oxide by using leached residues of electrolytic zinc acid method |
| abstract | The present disclosure relates to a method for producing nanometer zinc oxide by using leaching residue of an electrolytic zincate method, which comprises a primary leaching step, an optional purification step, a desulfurization step, a calcium zincate synthesis step, a primary calcination step, a secondary leaching step, a pressurization crystallization step, a decompression decomposition step, an optional rinsing step and a secondary calcination step. The method disclosed by the invention realizes secondary utilization of leaching slag while solving the environmental protection problem, realizes resource utilization while solving various heavy metal pollution, changes the sulfate ions as pollution sources into valuables by calcium sulfate conversion, realizes calcium zincate synthesis under the zinc ammonia environment for the first time, obtains nano zinc oxide by calcium zincate, does not need ammonia distillation, is simple and easy to implement, greatly reduces the energy consumption of the process, also avoids the problems of high-temperature and high-pressure potential safety hazards and equipment corrosion caused by ammonia distillation, creatively utilizes the decomposition condition of ammonium carbonate in the process, and realizes the recycling of carbon dioxide by pressure difference. |
| priorityDate | 2018-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 65.