并罐式无钟炉顶布料数学模型的研究  

Research of mathematical model of burden distribution on bell-less top for furnace with two parallel hoppers

作　　者：石琳[1] 赵广胜[2] 马祥[3] 

机构地区：[1]内蒙古科技大学数理与生物工程学院,内蒙古包头014010 [2]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [3]包头钢铁(集团)有限责任公司炼铁厂,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2016年第1期67-74,共8页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然基金资助项目(61263015)

摘　　要：将计算颗粒能量耗散系数的碰撞模型与水力学模型、科氏力模型、曳力模型相结合,建立了预测并罐高炉炉料堆尖位置的混合模型,并利用实测数据验证了该模型的正确性.该模型计算得出：左罐烧结矿科氏力加速度约为3.9~4.7 m/s2,右罐焦炭为1.5~4.8 m/s2,分别约占重力加速度的40%~48%和15%~49%;炉料在空区下落时,炉喉径向和切向的单位质量焦炭气体曳力分别为0.4 m/s2和0.1 m/s2,重力方向达到2.44 m/s2,是重力加速度的1/4.计算结果表明,并罐高炉堆尖位置计算必须考虑左、右料罐的差别,同时不可忽略气体曳力.Based on the combination of collision model calculating the particle＇s energy dissipation coefficient,which was combined with hydraulic model,the Coriolis force model and the drag force model,a mixture model was established to predict charging＇s tip position for blast furnace with parallel hoppers,and the experimental data were used to verify the correctness of the model. By the research of the mixture model,conclusions were drawn as follows：（ 1） the Coriolis acceleration of sinter in left hopper was about 3. 9 ~ 4. 7 m / s2,and coke in right hopper was about 1. 5 ~ 4. 8 m / s2,accounting for about 40% ~ 48% and 15% ~ 48% of gravity acceleration respectively;（ 2） with burden falling on space area,the gas drag force per unit mass of the coke in the radial and tangential directions of furnace throat was 0. 4 m / s2 and 0. 1 m / s2,respectively,while it achieved 2. 44 m/s2 in the gravity direction,being 1 /4 of the gravitational acceleration. Results show that the difference between the left and the right hopper must be considered during the calculation of charging＇s tip position for blast furnace with parallel hoppers,neither should the gas drag force be ignored.

关 键 词：并罐高炉 能量耗散系数 科氏力 气体曳力 

分 类 号：TF512[冶金工程—钢铁冶金]