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一、前言转炉后搅拌作为复吹转炉处理低碳钢水的重要精炼手段,取得了优于顶吹炼钢的技术经济效益。但是,在工艺操作中,炉底供气强度低(≤0.04标米~3/分吨),影响了后搅拌冶金作用的充分发挥。因此,提高熔池搅拌能力,更经济地生产低碳、超低碳钢是目前急待解决的技术问题。本文拟从改变炉型提高熔池搅拌能力和搅拌条件对冶金效果的影响两方面,对上述问题进行探讨。二、改变炉型提高搅拌能力转炉后搅拌条件下驱动钢水的能量由气泡浮力作功提供,引起钢水流动的功率消耗可以从理论上导出: ε=0.014(Q/Mm)Tlg(1+H/1.48) (1)
I. Introduction After the converter stirring as a complex blowing converter for the treatment of low-carbon steel, an important means of refining, made better than the top blowing steel, the technical and economic benefits. However, during the process operation, the gas supply intensity at the bottom of the furnace is low (≤0.04 standard meters ~ 3 / tonne), which affects the full play of the post-mixing metallurgy. Therefore, to improve the mixing ability of the molten pool and to produce the low-carbon and ultra-low carbon steel more economically is a technical problem that needs to be solved urgently. This article intends to change the furnace type to improve the pool mixing capacity and mixing conditions on the metallurgical effect of the two aspects of the above problems are discussed. Second, change the type of furnace to improve the mixing capacity of the furnace after stirring the molten steel driven by the buoyancy of the energy provided by the work, causing the flow of molten steel can be theoretically derived from the power consumption: ε = 0.014 (Q / Mm) Tlg (1 + H / 1.48) (1)