无料钟炉顶高炉中炉料流动轨迹的模拟  

Simulation of Burden Trajectory in a Bell-less Top Blast Furnace

作　　者：邱家用[1] 高征铠[1] 张建良[1] 国宏伟[1] 王春龙[1] 孔德文[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《过程工程学报》2011年第3期368-375,共8页The Chinese Journal of Process Engineering

基　　金：国家"十一五"科技支撑计划基金资助项目(编号:2008BAB32B05)

摘　　要：结合炉料在无料钟炉顶高炉中的实际运动情况,对炉料颗粒的运动和受力进行分析,建立了料流轨迹运动方程,改进了前人提出的模型,并利用实际高炉开炉装料实测数据对模型进行验证.结果表明,该模型计算的落点半径与实际测量数据较接近;沿溜槽长度方向单位质量炉料所受的科氏力不断增大,在溜槽倾角41o条件下,单位质量的焦炭所受科氏力约为2.2～5.5m/s2,矿石约为2.1～4.6m/s2,分别约占重力加速度的22%～56%和21%～47%;当煤气流速为0时,气体曳力系数焦炭为1.83～1.88,矿石为3.32～3.40,单位质量炉料所受阻力为2.4～4.9m/s2,约占单位质量炉料所受重力的1/4～1/2.An equation of motion trajectory of blast furnace burden can be established by analyzing the movement and the acting force conditions of burden in a bell-less top blast furnace. Consequently, the previous model can be improved. The accuracy of simulation model has been proven by the experimental data of a domestic 3200 m^3 blast furnace charging before blowing in. The results indicate that the calculated values coincide with measured data of the radius of impact point of burden preferably. Along the chute length, the Coriolis force per unit mass increasing continuously. When the chute inclination angle is 41°, the Coriolis force per unit mass of coke approximately is 2.2～5.5 m/s^2 while that of ore is about 2.1～4.6 m/s^2, which accounts for 22%～56% and 21%～47% of acceleration of gravity respectively. When the flow velocity of gas is 0 m/s, the gas drag coefficient at coke is 1.83～1.88 while that at ore is 3.32～3.40, and the resistance acting on unit mass of burden is about 2.4～4.9 m/s^2, which accounts for 1/4～1/2 of gravity per unit mass.

关 键 词：无料钟炉顶高炉 料流轨迹 科里奥利力 气体阻力系数 

分 类 号：TF512[冶金工程—钢铁冶金]