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竖炉内煤气流的分布主宰着其内温度分布、煤气利用率和金属化率的高低,其上部调节方式仅有布料模式。通过引入离散颗粒动力学理论,基于经典牛顿力学和颗粒碰撞软球模型建立了针对COREX 3000竖炉布料过程的离散元数值模拟模型,模型直观可视化再现装料过程,可定量获得料流轨迹、炉料落点及形成料堆的过程。应用模型进一步分析混装2种不同粒径颗粒,获得了炉料运动及形成的料堆过程,发现混装布料过程粒度偏析严重。建立的模型可为寻找和优化合理的布料模式提供重要研究基础。
The shaft furnace gas flow distribution dominated its temperature distribution, gas utilization and metallization rate, the upper part of the adjustment mode is only the cloth mode. Based on the theory of discrete particle dynamics and the classical Newtonian mechanics and the particle collision softball model, a discrete element numerical simulation model for the COREX 3000 shaft furnace fabricating process was established. The model visualized and visualized the loading process, and the flow trajectory, Placement and the formation of material pile process. The application model was further analyzed to mix two kinds of particles with different particle sizes, and the movement of the charge and the formation of the material piles were obtained. It was found that the particle size segregation was serious in the mixed fabric. The established model can provide an important research foundation for finding and optimizing the reasonable cloth pattern.