Abstract：A three-dimensional DEM-based model was used to investigate the effect of scaffolding on the burden behavior such as the solid flow pattern and the interactive force in COREX shaft furnace. The improvement of the discharge rate on the solid flow under scaffolding conditions was also explored. The results confirm that the scaffolding occurred near the bustle pipe zone would directly affect the movement trajectory of the burden, resulting in the changes of solid flow pattern. Meanwhile, the interactive force was increased obviously compared to the normal condition. The solid flow pattern was also changed significantly when the scaffolding was generated in the guiding cone, and the particle segregation can be observed under the scaffolding. Comparing with the condition where scaffolding was generated near the bustle pipe zone, the interactive force was enhanced further. The force between the particles was decreased dramatically by increasing the speed of screw under the scaffolding, and the probability density distribution of interactive force shows a similar tendency as the normal condition. The findings of this work can provide guidance and theoretical basis for the optimized operation of COREX shaft furnace.
杜斌斌, 吴胜利, 周恒, 寇明银. COREX竖炉结瘤对物料运动行为影响的DEM模拟[J]. 钢铁, 2020, 55(1): 12-19.
DU Bin-bin, WU Sheng-li, ZHOU Heng, KOU Ming-yin. Effect of scaffolding on solid flow in COREX shaft furnace by discrete element simulation method. Iron and Steel, 2020, 55(1): 12-19.
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2020, Vol. 55 
