http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105648138-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21C5-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21C5-30 |
| filingDate | 2016-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105648138-B |
| titleOfInvention | A kind of method for reducing converter semi-steel making nitrogen content |
| abstract | The invention belongs to metallurgical technology field, and in particular to a kind of method for reducing converter semi-steel making nitrogen content.The inventive method includes：A, converter smelting control hot metal ratio, makes hot metal ratio ＞ 0.9；B, blowing the later stage, using low rifle position operate：On the basis of Converter Oxigen Blowing amount, when blowing oxygen quantity reaches the 70~80% of total oxygen demand, oxygen lance position is reduced, until tapping；Dolomite is added when c, tapping to 2/3, while adds lime, one layer of top slag, thickness of slag layer ＜ 60mm are formed in molten steel face；D, tapping adds top slag modifier after terminating；E, tapping hole is safeguarded, ensures that tapping steel stream does not dissipate.A kind of method for reducing converter semi-steel making nitrogen content of the present invention, tapping nitrogen content is controlled by converter smelting, so that tapping Control of Nitrogen Content can meet the needs of the steel grade higher to requirement of nitrogen, the inventive method has a good application prospect and promotional value within 15ppm. |
| priorityDate | 2016-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.