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 ›› 2015, Vol. 36 ›› Issue (2): 32-35.

• 工艺技术 • 上一篇    下一篇

避免原辅料对KB-150 t BOF-RH-CC流程MA超低碳钢水增碳的生产实践

邓力1,彭其春1,宋佳霖1,邱雷1,盛喜松2,邓品团2   

  1. 1. 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,武汉 430081 ;
    2. 武汉钢铁(集团)公司,武汉 430083;
  • 收稿日期:2014-10-20 出版日期:2015-04-01 发布日期:2022-08-23
  • 作者简介:邓 力(1989-),男,硕士研究生,从事钢种研发成套技术、铸坯与轧材质量缺陷控制与解决方案等方面的研究。

Production Practice of Avoiding Raw and Supplement Materials on Increase Carbon in MA Ultra-Low Carbon Steel Liquid during KB-150 t BOF-RH-CC Flowsheet

Deng Li1 , Peng Qichun1 , Song Jialin1 , Qiu Lei1 , Sheng Xisong2 , Deng Pintuan2   

  1. 1. Key Laboratory for ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081 ;
    2. Wuhan Iron and Steel (Group) Co, Wuhan 430083;
  • Received:2014-10-20 Published:2015-04-01 Online:2022-08-23

摘要: MA超低碳钢(/%:≤0.005C,0.007~0.012Si,0.07~0.15Mn,≤0.025P,≤0.025S,≤0.035Als,≤0.0020N)的生产流程为KB-150 t BOF(终点[C]≤0.020%)-RH-200 mm板CC工艺。试验分析了结晶器保护渣,中间包覆盖剂,钢包耐火材料对钢液增碳量影响。结果表明,结晶器增碳量(△C 0.0003%~0.0008%)明显高于中间包增碳量(△C 0.0001%~0.0005%),通过稳定冶金操作,控制保护渣原始碳量为1%~2%,向保护渣中添加MnO2(3.5%~4.0%),控制覆盖剂量等工艺措施,可有效地减少钢液增碳。

关键词: MA超低碳钢, KB-150 t BOF-RH-CC流程, 结晶器保护渣, 中间包覆盖剂, 钢水增碳

Abstract: The production flowsheet for MA ultra-low carbon steel (/% : ≤0.005C, 0.007-0.012Si, 0.07-0.15Mn, ≤0.025P, ≤0.025S, ≤0.035Als, ≤0.0020N) is KB-150 t BOF (end [C] ≤0.020%)-RH-200 mm slab CC flowsheet. The effect of mold flux, tundish shielding agent and ladle refractory materials on incremental carbon content in liquid has been tested and analyzed. Results show that the incremental carbon content in liquid in mold ( AC 0.0003%-0.0008% ) is obviously higher that in tundish (AC 0.0001%-0.0005% ) , through using the measures including defining metallurgy operation, controlling initial carbon content in mold flux 1% -2% and adding 3.5%-4.0% MnO2 in flux, controlling the amount of tundish shielding agent, it is available to decrease the incremental carbon content in liquid.

Key words: MA Ultra-Low Carbon Steel, KB-150 t BOF-RH-CC Flowsheet, Mold Flux, Tundish Shielding Agent, Incremental Carbon Content in Liquid