http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110882831-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B03B7-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B03B7-00 |
| filingDate | 2019-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110882831-B |
| titleOfInvention | Beneficiation method for primary niobium ores |
| abstract | The invention discloses a beneficiation method of primary niobium ores. The ore dressing method comprises the following steps of grinding raw ores, carrying out weak magnetic separation on ground products to obtain iron ore concentrates and weak magnetic tailings, carrying out strong magnetic roughing on the weak magnetic tailings to obtain strong magnetic rough concentrates and strong magnetic roughing tailings, carrying out strong magnetic concentration on the strong magnetic rough concentrates to obtain strong magnetic products and strong magnetic middlings, combining the strong magnetic roughing tailings and the strong magnetic middlings to obtain strong magnetic tailings, carrying out calcium-sulfur synchronous flotation on the strong magnetic tailings to obtain calcium-sulfur products and calcium-sulfur tailings, carrying out niobium flotation on the calcium-sulfur tailings to obtain niobium flotation concentrates and niobium flotation tailings, heating and acid leaching the niobium flotation concentrates, and filtering to obtain high-grade niobium concentrates. The method combines the process flows of weak magnetic separation, strong magnetic separation, reverse flotation, direct flotation and heating acid leaching to recover pyrochlore from the primary niobium ore, obtains niobium concentrate with high grade and good quality, has high recovery rate and strong adaptability, and can also recover iron, calcium and sulfur in the niobium concentrate. |
| priorityDate | 2019-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.