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以300t RH为研究背景装置,建立了整个装置的三维数学模型。用双流体模型处理气液两相流,分析了吹氩喷嘴个数、垂直间距、排数和分布形式对钢液流场和循环流量的影响。结果表明:在工况吹氩量时,钢液流场变化趋势不大,循环流量随吹氩喷嘴个数增加先增加后降低;吹氩喷嘴垂直间距为150 mm更合适;吹氩喷嘴上下两排交错分布更合理。
Taking 300t RH as the research background device, a three-dimensional mathematical model of the whole device was established. The two-fluid model was used to treat the gas-liquid two-phase flow and the influence of the number of argon blowing nozzles, vertical spacing, row number and distribution on the flow field and the circulating flow of the molten steel was analyzed. The results show that the trend of the flow field of molten steel is not obvious when the amount of argon is blown at the working condition. The circulating flow rate first increases and then decreases with the increase of the number of argon blowing nozzles. The vertical spacing of argon blowing nozzles is 150 mm, Row staggered distribution more reasonable.