Based on the introduction of the sublance system,the relationship between the TSC measur-ing parameters of sublance and the composition and temperature of molten steel is studied by the means of steelmaking static model and the data analysis of converter production,and obtains the boundary conditions of the direct tapping steel.TSC phosphorus content increases linearly with the increase of TSC temperature,and the appropriate TSC temperature is 1 600～1 620℃.TSC phosphorus content increases with the increase of TSC carbon content,and the appropriate TSC carbon content is 0.30%～0.40%.The end-point phosphorus content decreases with the increase of end-point oxygen con-tent,and the optimal control range of end-point oxygen content is(400～500)×10-6.The produc-tion practice shows that the smelting cycle shortens by 1.2 min and the average end point oxygen con-tent reaches 443×10-6 with the direct tapping steel technology base on sublance measurement.The direct tapping steel technology can meet the smelting requirements of converter and provides a reliable way to improve the smelting efficiency and reduce the process energy consumption.
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万方数据
