http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107055612-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-80 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G37-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G37-02 |
| filingDate | 2017-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107055612-B |
| titleOfInvention | A kind of method for preparing vanadium trioxide and chrome green using vanadium chromium reducing slag |
| abstract | The invention discloses a kind of methods for preparing vanadium trioxide and chrome green using vanadium chromium reducing slag, reducing agent is added after vanadium chromium reducing slag and water slurry, V (IV) in system is reduced into V (III) by the oxidation-reduction potential of adjustment system；Alkali is added into reduction reaction system, alkali leaching process is carried out, the Cr (III) in system is converted to Cr (OH) 4 ‑ , separation of solid and liquid is then carried out, obtains leachate containing chromium and vanadium trioxide filter cake；Vanadium trioxide filtration cakes torrefaction obtains vanadium trioxide product；To acid adding Precipitation hydrated chromium oxide in leachate containing chromium；Hydrated chromium oxide is through calcining to obtain calcining material；Chrome green product is obtained after the pickling of calcining material, drying.The method of the present invention reducing agent dosage is few, production process will not generate severe toxicity containing hexavalent chromium wastewater and waste residue, the content of V is more than 65.8% in obtained vanadium trioxide；The purity of chrome green is more than 98.2%；Vanadium chromium recovery ratio is high, and the rate of recovery of vanadium is more than 99.1%, and the rate of recovery of chromium is more than 96.1%. |
| priorityDate | 2017-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.