http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113061715-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/C21B13-008 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B1-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21B13-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B1-02 |
| filingDate | 2021-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113061715-B |
| titleOfInvention | Sodium iron polysulfide additive for strengthening low-temperature rapid reduction of refractory iron ore and application method thereof |
| abstract | The invention relates to an additive for strengthening solid reduction of refractory iron ore and application thereof: the additive contains Na, Fe and S; the valence state of S in the additive is less than 0, and the Na, the Fe and the S exist in the form of compounds. The application method of the additive comprises the following steps: uniformly mixing fine-fraction refractory iron ore and a sodium iron polysulfide additive for agglomeration, drying the obtained agglomerate, placing the dried agglomerate in a reducing atmosphere for high-temperature roasting, and grinding and magnetically separating the cooled roasted product to obtain a magnetic metal iron/iron alloy product and nonmagnetic tailings. The non-magnetic tailings containing sodium, iron and sulfur can be further separated to recover sodium iron polysulfide, so that the additive can be recycled. The additive is mainly obtained from metallurgical solid waste, is low in price and environment-friendly, can provide technical support for efficient utilization of iron ores which are difficult to treat, has the advantage of synergistic treatment of the solid waste, is easy to realize industrialization, and has very wide popularization and application prospects. |
| priorityDate | 2021-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.