ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2021, Vol. 42 ›› Issue (2): 31-34.

• 工艺技术 • 上一篇    下一篇

120t转炉高碳出钢工艺研究和应用

管挺,叶磊,万文华   

  1. 中天钢铁集团有限公司,常州213011
  • 出版日期:2021-04-01 发布日期:2022-04-15
  • 作者简介:管 挺(1985-),男,硕士(2017年重庆大学),工程师,河南 科技大学(本科)毕业,转炉炼钢工艺开发。

Technical Study and Application of High Carbon Liquid Tapping of 120t Converter

Guan Ting, Ye Lei, Wan Wenhua   

  1. Guan Ting, Ye Lei and Wan Wenhua
  • Published:2021-04-01 Online:2022-04-15

摘要: 理论计算高碳出钢冶炼所需的铁水比较常规工艺高2.9%。研究了转炉冶炼前期的脱磷规律。结果表明:转炉冶炼前期炉渣碱度控制在1.8~2.2,炉渣FeO含量控制在15%左右,熔池温度控制在1 400~1 450℃,转炉冶炼前期平均脱磷率可控制在75%。优化了冶炼过程的供氧制度、加料制度、底吹制度等,转炉终点碳含量可由原来的0.07%提高到0.21%,终点磷含量可由原来0.016%降低到0.011%。

关键词: 120t 转炉, 高碳出钢, 双渣, 脱磷

Abstract: The amount o£ molten iron for high carbon liquid tapping is 2.9% higher than the conventional process by theoretical calculation. The dephosphorization law at initial smelting period of BOF is studied, The results show that at the first stage with control of ( FeO) 15% ,slag basicity 1.8 to 2. 2 and bath temperature 1400 ~ 1450 t ,then the average dephosphorization rate up to 75% at initial smelting period of BOF. The oxygen blowing system, feeding system and bottom blowing system of smelting process are optimized, that the end-point carbon content can be increased from original 0. 07 % to 0.21% , and the end-point phosphorus content can be reduced from original 0.016% to 0.011%.