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在冷态情况下,根据相似理论和气体动力学理论,对武钢二炼钢的复吹工艺进行了研究.水模实验结果表明: 转炉底部风口靠近炉中心布置或者采用底风口不在同一圆周上的交错布置均能加强转炉钢液搅拌特性,并获得较理想的固体渣料运动的效果。气体动力学表明:在不漏钢的前提下,采用较宽缝隙的扁平风口或圆形风口能提高气体流量减少压力损失、增强复吹工艺的效果。二炼钢的转炉复吹的调查结果进一步说明:按以上原则所进行底透气砖的布置可降低转炉内的氧化铁含量、钢液的氧含量以及增强炉渣脱磷的效果。
Under the condition of cold condition, according to the similar theory and gas dynamic theory, the double blowing technology of Wuhan Iron and Steel Co., Ltd. was studied.The results of water modeling experiment show that the bottom tuyere of the converter is arranged near the center of the furnace or the bottom tuyere is not on the same circumference Staggered layout can enhance the converter molten steel stirring characteristics, and obtain a better effect of solid slag movement. Gas dynamics shows that, in the condition of no leakage of steel, the use of a wide-gap flat or circular tuyere can increase the gas flow rate and reduce the pressure loss, and enhance the effect of the double blowing process. The results of the second BF BOF further illustrate that the arrangement of the bottom BEF according to the above principles can reduce the content of iron oxide in the BOF, the oxygen content of the molten steel and the dephosphorization of the slag.