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渣钢间传质速度决定了熔池元素的反应速度(尤其是脱碳和脱磷反应速度),并直接影响元素在渣钢间分配.本文以邯钢250 t转炉为研究对象,利用相似比1∶9建立水模型,考虑供气流量、枪位和底吹位置因素研究转炉内传质能力.结果表明:加大顶吹供气强度和底吹供气强度能够大大提高熔池元素在渣钢间的分配;渣钢间传质系数随底吹气体流量降低而明显降低,建议底吹气体流量不低于0.06 m~3·t~(-1)·min~(-1);底吹孔数越多,渣钢间传质系数越大;底吹流量分配方案优于流量平均分配方案,建议采用.
The mass transfer rate between slag steel determines the reaction speed of the molten pool elements (especially the decarburization and dephosphorization reaction rate), and directly affects the distribution of the elements in the slag steel.This paper takes the Handan Iron and Steel 250 t converter as the research object, 1:9 to establish a water model, considering the gas flow, gun position and bottom blowing position of the mass transfer ability of the converter.The results show that: to increase the top blowing air supply and bottom blowing air supply can greatly enhance the molten pool element in the slag The mass transfer coefficient between slag and steel is obviously decreased with the decrease of the bottom blowing gas flow rate. It is suggested that the bottom blowing gas flow rate should not be less than 0.06 m 3 · t -1 · min -1; The larger the number of holes, the larger the mass transfer coefficient between slag steel; bottom blowing flow distribution scheme is superior to the average flow distribution scheme, it is recommended.