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Development of particle flow simulator in charging process of blast furnace by discrete element method

机译：高炉装料过程颗粒流模拟器的离散元法开发

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The objective of this paper is the development of a particle flow simulator for a blast furnace charging process using the discrete element method. A full model of the bell-less type charging process; i.e. a surge hopper, conveyors, a parallel hopper, a rotating chute and top layer of blast furnace, was modeled. The history of particle segregation during charging/discharging can be considered using this model. The particle segregation not only spatially-distributed but also temporal-distributed in each process can be analyzed in detail. The larger particles are stayed near the side walls due to segregation during flowing on the heap, when the particles are charged into the surge hopper or the parallel hopper. The segregation during flowing in the chute, which is installed above the parallel hopper, also affects segregation in the hopper. The larger particles tend to be discharged last, because they are near the side wall in the surge hopper or the parallel ones. The particles flow toward the center of the blast furnace with increasing the number of chute rotations, and are segregated during flowing. Thus, the mean particle size nearer the center increases.
机译：本文的目的是开发一种使用离散元方法的高炉装料过程颗粒流模拟器。无钟型充电过程的完整模型;即，对缓冲料斗，输送机，平行料斗，旋转溜槽和高炉顶层进行了建模。使用此模型可以考虑充电/放电过程中颗粒偏析的历史。可以详细分析每个过程中不仅在空间上分布而且在时间上分布的粒子偏析。当将较大的颗粒装入料斗或平行料斗时，由于在堆上流动期间的分离，较大的颗粒会留在侧壁附近。安装在平行料斗上方的斜槽中流动时的偏析也会影响料斗中的偏析。较大的颗粒倾向于最后排出，因为它们靠近缓冲料斗或平行颗粒中的侧壁。随着溜槽转数的增加，颗粒流向高炉的中心，并在流动过程中分离。因此，靠近中心的平均粒径增加。

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