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基于相似原理,按照相似比1∶4对武汉钢铁(集团)公司150 t钢包建立了水力模型,通过水模试验考察了吹氩孔位置、角度以及吹氩流量变化对钢包混匀时间的影响,并考察了不同底吹布置条件下钢包流场变化情况。水模试验结果表明,原型方案中,最佳吹气流量为0.64 m3/h;0.65R-90°为底吹透气喷嘴最佳布置方式;底吹喷嘴布置不仅要考虑低吹气流量下的混匀效果,而且要考虑到气体对钢包内壁的冲刷作用。
Based on the similarity principle, a hydraulic model was established for 150 t ladle of Wuhan Iron and Steel (Group) Corporation according to the similarity ratio of 1: 4. The influence of the position and angle of argon blowing hole and the change of argon flow on the ladle mixing time was investigated by water model test. The changes of ladle flow field under different conditions of bottom blowing were investigated. The results of water model test showed that the optimum blowing air flow was 0.64 m3 / h in the prototype scheme and 0.65R-90 ° was the best arrangement for the bottom blowing ventilation nozzles. The bottom blowing nozzle arrangement not only had to consider the low blowing flow mixing Even effect, but also to take into account the impact of gas on the inner wall of the ladle erosion.