炼钢 ›› 2016, Vol. 32 ›› Issue (6): 19-26.

• 转炉及电炉冶炼 • 上一篇    下一篇

钢包热状态对钢水温降影响因素分析算法优化

  

  1. 北京科技大学 1.冶金与生态工程学院,北京 100083;
    2.钢铁冶金新技术国家重点实验室,北京 100083;
    3.计算机与通信工程学院,北京 100083)
  • 接受日期:1900-01-01 出版日期:2016-12-05

The analysis about effect of ladle thermal status on liquid steel temperature drop and algorithm optimization

  • Accepted:1900-01-01 Online:2016-12-05

摘要: 针对Q炼钢厂转炉出钢温度过高及钢水温度管控精度低的情况,通过建立钢包传热模型,研究钢包热状态对钢水温降的影响,并将双因素耦合叠加值(将包龄、上线前烘烤时间两者耦合影响结果与空包时间、上线后烘烤时间两者的耦合影响结果直接线性叠加,得到的转炉出钢温度补偿值)与多因素耦合值进行对比分析,从而优化算法。结果表明:当上线前离线位烘烤时间较短且包龄数较少时,多因素耦合值与双因素耦合叠加值差距为0.4~1.024 ℃;当上线后进行离线烘烤时,多因素耦合值与双因素耦合叠加值差距为0.4~3.338 ℃,两种情况下,多因素耦合和双因素耦合的差距都较大,应该使用多因素耦合值。否则,可以使用双因素耦合叠加值。所得结论应用于钢包热状态影响因素研究中,能够减少计算量;研究结果应用于实际生产中能够使转炉出钢温度补偿制度更加合理。

关键词: 钢包, 热状态, 钢水温降, 耦合

Abstract: There are the problems of high temperature steel converter and low liquid steel temperature control precision in Q steel works. To study the effect of ladle thermal status on liquid steel temperature, the multi factor coupling value has been compared with the double factors coupling superposition values by building and solving the heat transfer computation model for ladle, the result and algorithm has also been analyzed and optimized. The results have shown that the difference between multi-factor coupling and the double-factors coupling superposition values is 0.4—1.024 ℃ when offline preheating before being put into use or having short ladle life, and the difference is 0.4—3.338 ℃ when offline preheating after being put into use. The difference shows that the multifactor coupling should be used in liquid temperature compensation, otherwise the doublefactors coupling superposition should be used. The results are applied to the study on influence factors of ladle thermal state, can reduce the amount of calculation. The results are applied in production can make the tapping temperature compensation system more reasonable.

Key words: ladle, thermal status, liquid steel temperature drop, coupling