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依据相似原理建立钢包的物理模拟体系,采用水模型对110tLF钢包底吹氩过程进行研究,分析了吹气量、吹氩位置、钢包覆盖渣和钢包液面高度对钢包混匀的影响,并进行了相应的试验验证。研究结果表明:水模型试验结果和大工业应用具有较好的一致性,验证了水模型的可行性;钢包液面高度越高,混匀时间越长;吹气量越大,混匀时间越短;相同的液面高度和吹气量下,底吹氩最佳位置为0.33r附近;钢包覆盖渣较黏时会使钢液流动显著减慢,增大吹气量容易产生卷渣现象。
Based on the principle of similarity, the physical simulation system of ladle was established. The water model was used to study the process of blowing argon on the bottom of 110tLF steel. The effects of air blowing volume, argon blowing position, ladle slag and ladle height on ladle mixing were analyzed. Corresponding test verification. The results show that the water model test results are in good agreement with those of large industrial applications, and the feasibility of the water model is verified. The higher the liquid surface height of the ladle, the longer the mixing time; the larger the air blowing volume, the shorter the mixing time ; Under the same liquid level and blowing capacity, the optimum position of bottom blowing argon is near 0.33r; when the ladle slag is more viscous, the flow of molten steel will be significantly slowed down, and the volume of blowing air will tend to generate entrainment slag.