Abstract
The simultaneous charging at the top and discharging at the bottom inevitably have the combined effects on granular segregation in the shaft furnace. Herein, we first establish a 1:1 full mathematical model of shaft furnace and validate the parameters for the discrete element method (DEM) simulation. Then a quantified method based on an equilateral triangle is updated to characterize the ternary-component (coke, sinter, and pellet) granular segregation. The results show that compared with the sole operation, the simultaneous charging and discharging operations make the overall ternary segregation worse in the central and peripheral regions of the shaft furnace. Furthermore, transient granular behaviors in terms of the granular profile, the instantaneous segregation, the particle-scale trajectory and vertical velocity, and the granular number distribution are given full discussions to provide a data-driven insight into the combined effects on granular segregation.
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