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为探究炉缸炉底在正常侵蚀的情况下和出现挂渣之后侵蚀的情况下炉缸内铁水流场的区别。以流体力学理论基础,建立了炉缸炉底在侵蚀前后铁水流场的三维数学模型和炉缸内生成结渣之后铁水流动对炉缸炉底的侵蚀情况的三维数学模型。利用CFX软件,研究不同时期炉缸炉底的速度矢量和不同位置的流线。结果表明,生成挂渣前后炉缸出现环流现象,但是由于挂渣粘附在炉缸上,对炉缸有一定的保护作用,同时炉缸内出现挂渣之后减小了炉缸的内部构造,使铁水流出出铁口的速度加快。在生产中可利用生成挂渣,加快出铁速度,同时依靠挂渣的保护作用,延长高炉炉缸的使用年限。
In order to explore the hearth bottom of the furnace in the case of normal erosion and erosion occurs after the case of slag hearth molten iron flow field difference. Based on the theory of fluid mechanics, the three-dimensional mathematical model of the molten iron flow field before and after the hearth and the erosion of the hearth after the slag was formed in the hearth were established. CFX software was used to study the velocity vector of hearth and hearth at different positions and flowlines at different positions. The results show that the hearth appears to circulate before and after the dross is formed. However, since the dross adheres to the hearth, it has a certain protective effect on the hearth. At the same time, the internal structure of the hearth diminishes after the dross appears in the hearth, So that the speed of hot metal out of the iron mouth. The production can be used to generate dross, to speed up the tapping speed, while relying on the role of dross protection, to extend the useful life of the blast furnace hearth.