基本信息:
- 专利标题： 전로의 조업 방법
- 专利标题（英）：METHOD FOR OPERATING CONVERTER FURNACE
- 申请号：KR1020197032902 申请日：2018-05-07
- 公开(公告)号：KR102254941B1 公开(公告)日：2021-05-21
- 发明人： 아마노쇼타 , 다카하시유키오 , 기쿠치나오키 , 미키유지
- 申请人： 제이에프이 스틸 가부시키가이샤
- 申请人地址： *-*-* UCHISAIWAICHO, CHIYODA-KU, TOKYO, JAPAN
- 专利权人： 제이에프이 스틸 가부시키가이샤
- 当前专利权人： 제이에프이 스틸 가부시키가이샤
- 当前专利权人地址： *-*-* UCHISAIWAICHO, CHIYODA-KU, TOKYO, JAPAN
- 代理人： 이철
- 优先权： JPJP-P-2017-092258 2017-05-08
- 国际申请： PCT/JP2018/017585 2018-05-07
- 国际公布： WO2018207718 2018-11-15
- 主分类号： C21C5/32
- IPC分类号： C21C5/32 ; C21C5/52
摘要：
상취랜스로부터산소가스를상취하여용철의탈탄정련을실시하는데에있어서, 용철의요동을억제하고, 또한, 버블버스트및 버블버스트에수반되는스핏팅을억제한다. 하단에라발노즐이설치된상취랜스를이용하여, 라발노즐로부터전로내의용선욕면에산소가스를분사하여전로내의용철을탈탄하는전로의정련방법으로서축적산소지표 S(F)가 40 이하가되도록, 상취랜스로부터의송산속도및 랜스높이 LH의어느한쪽또는양쪽을조정한다.
摘要（英）：
When the decarburization refining of molten iron is performed by top-blowing oxygen gas from the top blowing lance, the oscillation of molten iron, a bubble burst, and spitting due to the bubble burst are suppressed. A refining method for a converter includes decarburizing molten iron in the converter with a top blowing lance having Laval nozzles disposed at the lower end thereof by blowing oxygen gas on the surface of the molten iron in the converter through the Laval nozzles, in which one or both of an oxygen feeding rate from the top blowing lance and lance height LH are adjusted in such a manner that an oxygen accumulation index S(F) is 40 or less.
信息查询:
EspacenetIPC结构图谱:
| C | 化学；冶金 |
| --C21 | 铁的冶金 |
| ----C21C | 生铁的加工处理，例如精炼、熟铁或钢的冶炼；熔融态下铁类合金的处理 |
| ------C21C5/00 | 碳钢的冶炼，例如普通低碳钢，中碳钢，或铸钢 |
| --------C21C5/04 | .平炉钢，例如西门子—马丁炉钢的冶炼 |
| ----------C21C5/30 | ..吹炼的调节或控制 |
| ------------C21C5/32 | ...顶吹 |