150 t钢包底吹氩气物理模拟

为评估国内某钢厂150 t钢包底吹氩工艺中供气流量、比例和底吹元件类型对精炼工艺的影响,建立了1:4物理模拟模型,研究了总供气量、供气方式和底吹元件类型对混匀时间的影响。结果表明,随总供气量的增加,使用两种类型底吹元件的钢包混匀时间下降,在小气量下使用弥散型底吹元件混匀时间小于狭缝型,较大气量下两者相反,且使用狭缝型底吹元件混匀时间受供气方式影响更大。试验条件下离钢包中心较远的底吹位置使用较大的底吹流量有利于混匀。

Physical simulation of bottom blowing argon in 150 t ladle

In order to evaluate the influence of gas supply flow, proportion and bottom blowing element type on bottom blowing argon process of 150 t ladle in a domestic steel plant, a 1:4 physical simulation model was established to study the influence of total gas supply, gas supply mode and bottom blowing element type on mixing time. The results show that the mixing time of ladle with two types of bottom blowing elements decreases with the increase of total gas supply. The mixing time of diffusion type bottom blowing element is less than that of slit type under small gas supply, but the two are opposite under large gas supply, and the mixing time of slit type bottom blowing element is more affected by gas supply model. Under the experimental conditions, the bottom blowing position far away from the center of the ladle has larger bottom blowing flow, which is conducive to mixing.