Abstract: Based on a 120 t converter, the 3-dimensional mathematical model has been established and the calculation of Euler two phases is carried out to get reasonable eccentric position of gas permeable elements for bottom blowing. O- riginal even distribution mode of 8 permeable elements with eccentric position 0. 56 R ( radius of converter bath) at an angle of 45 ° is optimized and modified to 6 permeable elements of which 2 elements with eccentric position 0. 53 R, 2 elements with 0. 65 R and 2 elements with 0. 46 R, center angle of two group combined gas permeable brick being 180° and inner angle 30°. Production practice shows that after optimization it is available to decrease consumption of bottom blowing gas, increase bath stirring energy and decrease carbon-oxygen concentration product to 0. 002 513 from original 0. 002 674.

摘要： 根据120 t转炉建立三维数学模型,并进行Euler两相流计算,找出底吹透气元件合理的偏心位置,由原8个透气元件均布方式,偏心位置为0.56R(转炉熔池半径)、夹角为45°,优化为6个透气元件,偏心位置0.53R2个、0.65R2个、0.46R2个,两组组合透气砖中心夹角180°,内部夹角30°。生产实践表明,优化后有效地减少底吹气体消耗,提高熔池搅拌功能,碳氧浓度积由优化前的0.002 674降低到0.002 513。

关键词: 120 t顶底复吹转炉, 底吹系统, 三维数学模型, 工艺优化