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采用多相流体积法对某钢厂的LF炉底吹钢包建立了氩气/钢液/钢渣三相瞬态数学模型.描述了钢包内多相流动的基本形貌,并与稳态计算的结果进行了对比;研究了不同吹气流量对渣滴卷入深度和渣眼直径的影响.计算结果表明,渣滴卷入深度和渣眼直径随吹气流量的增加而增加,且在吹气流量为600L/min时发生骤增,该流量为临界卷渣吹气流量;在保持吹气流量为300L/min的条件下,当渣层厚度从150mm增加到300mm时,渣眼直径由455mm减小至110mm,且此时更容易发生卷渣现象.
A multi-phase flow volumetric method was used to simulate the three-phase transient state of argon / molten steel / steel slag in ladle LF ladle of a steel mill.The basic morphology of multiphase flow in ladle was described and compared with steady state calculated The results show that the influence of different air flow on the entrainment depth of slag droplet and the diameter of slag droplet are studied.The calculation results show that the entrainment depth of slag droplet and the diameter of slag droplet increase with the increase of gas flow rate, When the flow rate is 600L / min, the flow rate is the critical flow rate of entangled air. When the thickness of the slag layer is increased from 150mm to 300mm while the flow rate of air is 300L / min, the diameter of the slug decreases from 455mm As small as 110mm, and at this time more prone to entrainment phenomenon.