http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112239808-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/C22B34-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B1-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B1-005 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B1-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-22 |
| filingDate | 2020-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112239808-B |
| titleOfInvention | Method for extracting vanadium from vanadium-containing high-calcium high-phosphorus slag |
| abstract | The invention relates to the technical field of vanadium extraction, in particular to a method for extracting vanadium by utilizing vanadium-containing high-calcium high-phosphorus slag. The method comprises the following steps: a: carrying out primary crushing and primary sieving on the vanadium-containing high-calcium high-phosphorus slag to obtain a material with the particle size of less than 5mm, and then carrying out wet grinding and secondary sieving to obtain a material with the particle size of less than 0.175 mm; b: mixing the material obtained in the step a with water, then introducing sulfur dioxide gas under stirring until the pH value is 4-7, and then filtering to obtain low-calcium vanadium-containing slag and a calcium-rich solution; c: roasting the low-calcium vanadium-containing slag to obtain clinker, crushing the clinker, and then performing acid leaching to obtain vanadium-containing solution; d: heating the calcium-rich solution to obtain sulfur dioxide gas, and then returning to the step b for use. The method pretreats the vanadium-containing high-calcium high-phosphorus slag, and greatly reduces the content of calcium in the vanadium-containing high-calcium high-phosphorus slag and improves the grade of vanadium through the processes of iron removal, water grinding, decalcification and vanadium extraction. |
| priorityDate | 2020-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.