http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111876607-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21B15-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B1-005 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21B15-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B1-00 |
| filingDate | 2020-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-02-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-02-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111876607-B |
| titleOfInvention | Leaching, enriching and separating process for iron and chromium elements in electric furnace dust |
| abstract | The invention discloses a leaching, enriching and separating process of iron and chromium elements in electric furnace dust, which comprises the following steps: putting the electric furnace dust into a ball mill for dry grinding; taking the dry-ground sample, and heating the dry-ground sample in a muffle furnace at a programmed temperature under an air atmosphere; adding a leaching agent into the heated sample, oscillating, leaching and filtering to obtain a filtrate, namely a chromium leaching solution, and drying filter residues; and adding coke into the dried filter residue, grinding and mixing the filter residue and the coke, putting the mixture into a corundum crucible, putting the crucible into a tubular resistance furnace, heating the crucible under the nitrogen atmosphere, keeping the temperature for a period of time, cooling the crucible to room temperature, and taking out the crucible. The invention skillfully utilizes the physicochemical properties of all metal elements and compounds thereof in the dust and the change of the properties of reduction products of the metal elements and the compounds under the oxidation and nitrogen atmosphere in the air, and simply and effectively realizes the leaching, enrichment and separation of the iron, chromium elements and the like. |
| priorityDate | 2020-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 68.