炼钢

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150 t LF生产工艺优化及实践

朱学谨   

  1. (河钢集团承钢公司 生产计划部,河北 承德 067000)
  • 接受日期:1900-01-01 出版日期:2018-12-05

Production process optimization and practice of 150 t LF

  • Accepted:1900-01-01 Online:2018-12-05

摘要: 河钢集团承钢公司通过优化进站钢水温度控制、吹氩控制、造渣控制,使得进站钢水平均温度从1 552 ℃提高到1 573 ℃,转炉下渣量由60 mm降至45 mm,精炼脱硫时钢水搅拌能在9 000 W/t左右,进站钢水炉渣平均w(FeO)达到1.04 %,精炼过程w(FeO)控制在0.5 %左右,炉渣碱度达到2.9~3.2,平均一次脱硫率从59.87 %提高到到85.54%,炉均精炼周期从58.3 min缩短到47.9 min,加快了生产节奏,降低了生产成本。

关键词: LF, 温度控制, 吹氩, 造渣, 一次脱硫率, 精炼周期

Abstract: By optimizing the temperature control of LF inlet molten steel, argon blowing control and slagging control, the average temperature of LF inlet molten steel increased from 1 552 ℃ to 1 573 ℃, the roughing slag amount decreases from 60 mm to 45 mm, the stirring energy of molten steel is about 9 000 W/t in LF desulphurization, the average w(FeO) of LF inlet steel slag reaches 1.04 %, and was about 0.5 % in refining process. The basicity of refining slag reached 2.9—3.2, the average first desulfurization rate increased from 59.87 % to 85.54 %, and the refining cycle shortened from 58.3 min to 47.9 min. The production rhythm was accelerated and the production cost was reduced.

Key words: LF, temperature control, argon blowing, slaging, the first desulphurization rate, refining cycle