Research on the velocity distribution law of the coke in the chute of blast furnace based on discrete element method

Zhou, Ke; Jiang, Zhaohui; Pan, Dong; Gui, Weihua; Huang, Jiancai; Xu, Chuan

doi:10.1007/s40571-022-00494-6

Cited by 1 publication

(1 citation statement)

References 28 publications

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“…Xu et al [15] further evaluated the effect of the cross-section shape (including semicircular and rectangular types) of the rotating chute on burden distribution and granular flow during the charging process of a bell-less top BF using DEM. Using DEM, Zhou et al [16] focused on the movement trend and velocity distribution law of coke in the chute. In the research of Mio et al [17], the melting behavior and combustion of the burden material were modeled by introducing a shrinking particle model into DEM, and then they observed the particle pulsating flow and collapse of the coke layer at the top of a BF.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of the Performance of Different Particle Models in Simulating Particle Charging and Burden Distribution in a Blast Furnace within the DEM Framework

Xia

Zhou

et al. 2023

Energies

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There has been growing interest in applying the DEM (discrete element method) to study the charging and burden distribution in a BF (blast furnace). In practice, the real particles in a BF are non-spherical. However, spherical particles have mostly been used in previous DEM investigations. Furthermore, various particle models have been developed to describe non-spherical particles. However, the effects of using different particle models on particle behavior in a BF are still unclear. Therefore, a comparative study of how the particle shape model impacts the burden charging in a BF was conducted. Specifically, the DEM using a multi-sphere model, polyhedral model, and super-ellipsoid model was first established. Then, experiments and DEM simulations of the charging and burden distribution of non-spherical quartz sand particles in a lab-scale bell-less top BF were performed. The results indicated that the number of sub-spheres, the principle of creating the particle for multi-spheres, the number of planes for polyhedrons, and the shape indices for super-ellipsoids could all affect the accuracy and efficiency. Moreover, applying the super-ellipsoid model and multi-sphere model could achieve reasonable accuracy and efficiency, with the highest simulation accuracy for the polyhedral model but at the cost of a rather heavy computational burden.

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Section: Introductionmentioning

confidence: 99%