300t转炉底吹布置优化研究  

The Research on Flow Field Characteristic of Bottom-blowing Arrangement in 300 t Converter

作　　者：裴培[1] 刘福海[2] 朱荣[2] PEI Pei LIU Fuhai ZHU Rong(Shougang Jingtang United Iron ＆ Steel Co. Ltd., Tangshan 063200, China School of Metallurgical and Ecological Engineering, Beijing University of Science and Technology, Beijing 100083, China)

机构地区：[1]首钢京唐钢铁联合有限责任公司,河北唐山063200 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《工业加热》2017年第3期20-22,26,共4页Industrial Heating

摘　　要：根据转炉实际结构尺寸,采用ANSYS14.0软件进行了不同底吹布置模式的多相流数值模拟研究,本研究条件下所得熔池平均速度与平均湍动能在数值上存在相反关系,同时结合水模拟结果可知,影响熔池混匀效果的主要因素,为熔池的流动速度。将优化后转炉底吹位置应用于300 t转炉,工业试验表明,复吹转炉平均冶炼时间为14.6 min,终点含碳量满足钢种需求,脱磷率达90%以上,利用设计底吹方案为转炉冶炼提供了良好的动力学条件。此外,终钢平均碳氧积为0.00244,碳氧积反应接近平衡,保证了冶炼钢水的质量。Based on the structural parameters of converter, a numerial simulation of multiple flow values has been carried out usirg AN- SYS14.0 in this work. At the tested condition, the average velocity of molten bath increases with its turbulent-kinetic-energy reduces, and the average velocity determines the mass transfer in molten bath based on the results. To test the simulation results, the bottom-blown ar- rangment applied to a 300 t converter. The industrial experiment shows the smelting time is 14.6min, the end-point carbon content meets the demand of steel grade and the dephosphorization rate is above 90%. The designed bottom-blowing arrangemmt improve dynamic conditions for metallurgical reactions. Moreover, the avarege carbon oxygen product is 0.00244 which means that the carbon-oxygen reaction is almost in equilibrium state ensuring the quality of the molten steel.

关 键 词：转炉 底吹 数值模拟 脱磷 

分 类 号：TF715[冶金工程—钢铁冶金]