炼钢 ›› 2015, Vol. 31 ›› Issue (3): 5-8.

• 生产实践 • 上一篇    下一篇

转炉双渣冶炼工艺优化

管挺   

  1. 1. 江苏省(沙钢)钢铁研究院,江苏 张家港 215625;2.江苏沙钢集团有限公司 宏发炼钢厂,江苏 张家港 215625
  • 收稿日期:2014-08-11 修回日期:2014-10-23 接受日期:1900-01-01 出版日期:2015-06-05 发布日期:2015-06-08
  • 通讯作者: 管挺 E-mail:guanting1999@163.com

Optimization of double slag process in BOF

  • Received:2014-08-11 Revised:2014-10-23 Accepted:1900-01-01 Online:2015-06-05 Published:2015-06-08

摘要: 通过对转炉冶炼过程的平衡计算及脱磷规律的研究,优化了转炉双渣工艺。实践表明:在满足钢种要求的出钢钢水成分前提下,将铁水比由84%提高到88%,转炉终点出钢温度可稳定控制在1680℃以上;前期炉渣w(MgO)控制在6%~8%,碱度控制在1.6~1.8,终点炉渣碱度控制在3.5~4.0,转炉终点磷质量分数基本可控制在0.02%以下,达到了生产冷轧基板对转炉出钢要求温度高、磷含量低的工艺指标。

关键词: 双渣, 转炉, 脱磷

Abstract: The double slag process of BOF was optimized by balance calculation and research of dephosphorization law. Then the requirement of the tapping temperature was satisfied by raising the hot metal ratio from 84% to 88%. Moreover,results showed that w(MgO) of slag was best satisfy to 6%~8% with the basicity was 1.6~1.8 at the first deslagging and the final slag basicity was controlled at 3.5~ 4.0 , then the phosphorus mass fraction could be lower than 0.02% and the temperature of steel was higher than 1680℃ at BOF steelmaking end.

Key words: double slag, BOF, dephosphorization