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为了减少风口小套前端碰撞磨损的发生,利用离散单元模型和计算流体力学的耦合模型对焦炭在风口前的运动行为进行了研究,并根据得到的焦炭速度矢量场分析了风口小套前端物理磨损的机理。结果表明:风口小套前端处于靠近高炉壁面的区域时,焦炭颗粒运行速度较小,磨损不会很严重,但小套长度较短,会导致炉体中心气流不盛;处于远离高炉壁面的区域时,焦炭运行速度快、粒度较大、数量较多,磨损严重;处于离高炉壁面最远的区域时,焦炭运行速度快,但速度方向与小套前端相切,且焦炭粒径小,因此磨损很小。
In order to reduce the occurrence of collisions and wear of the front end of the tuyere, the kinematic behavior of coke in front of the tuyere was studied by using the coupled model of discrete element model and computational fluid dynamics. The physical front wear of the tuyere was analyzed based on the obtained coke velocity vector field The mechanism. The results show that when the front end of the tuyere is close to the wall of the blast furnace, the coke particles run at a relatively low speed and the wear will not be very serious. However, the short sleeve length will result in the gas flow in the center of the furnace will not be over. , The coke runs fast, the particle size is larger, the number is larger and the wear is serious. In the farthest area from the wall of the blast furnace, the coke runs fast but the velocity direction is tangent to the tip of the small sleeve and the coke particle size is small Small wear.