Abstract
The utilization of a high pellet ratio in blast furnace smelting represents a pivotal strategy for achieving green and low-carbon ironmaking, which can improve raw material quality, reduce energy consumption, and decrease CO2 emissions. In this study, the impact of pellet proportion and charging sequence on the burden distribution was investigated using the discrete element method. The results revealed that the pellet mass fraction and the porosity of the ore layer gradually increase from the furnace wall toward the center under different pellet proportion conditions. As the pellet proportion increases, the radial segregation index of the pellets decreases and the porosity of the ore layer slightly increases. Furthermore, alternating charging can reduce pellet rolling, thereby lowering the flowability of the burden. The research outcomes can offer valuable insights for optimizing blast furnace charging operations when using a high pellet ratio, contributing to an improved smelting efficiency.
Published Version
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