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本文是通过水力模型试验,对新抚钢厂的6吨转炉进行顶底复合吹炼法的研究。为保证底吹有稳定性的效果,而选择其合理的工艺参数。试验表明底吹喷枪2支,枪间距离为0.6d(d为炉底直径),底吹气体流量((Q底)/(Q顶+Q底))在10～20％为佳。此时炉口喷溅量可较顶吹法减少21.5～54％;钢液内部的均匀混合时间缩短35～44％;同时钢-查间的体积传质系数(K_B·a)增大1.87倍,为同类型炉子开展复合吹炼新工艺提供参考依据。
This article is through the hydraulic model test, Xin Fu Steel 6 tons converter top and bottom compound blowing method research. In order to ensure the stability of the bottom blowing effect, and choose its reasonable process parameters. The test shows that there are 2 bottom blowing lances and the distance between guns is 0.6d (d is the bottom diameter). The bottom blowing gas flow rate ((Q bottom) / (Q top + Q bottom)) is preferably 10-20%. At this time, the amount of spout of the furnace mouth can be reduced by 21.5% ~ 54% compared with that of the top-blowing method. The uniform mixing time in the molten steel can be shortened by 35% ~ 44%, and the mass transfer coefficient (K_B · a) , For the same type of furnace to carry out composite blowing new technology provide a reference.