Analysis of the Effect of Ventilation Bars on the Packing Structure of Sinter Bed by DEM Simulation

Ishihara, Shingo; Kushimoto, Kizuku; Kano, Junya

doi:10.3390/en13153836

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…Terui et al developed a numerical simulator capable of measuring coke blending in the upper layer of a blast furnace [15]. Ishihara et al utilized DEM to simulate the behavior of charged materials in order to investigate the impact of ventilation bars on the porosity of the sinter bed [16].…”

Section: Reinforcing Sinter Charging Segregationmentioning

confidence: 99%

Development of Cycloid-Shaped Roll Charging Chute for Sintering Process for Energy Decarbonization and Productivity Improvement in Steel Plants

Kwon,

Choi,

Lee

2024

Energies

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The global steel industry is rapidly transitioning towards energy decarbonization to address the climate crisis. Sintering is one of the main sources of greenhouse gas emissions from steel mills. Traditional sintering processes use straight inclined chutes to feed raw materials into the sinter machine. However, this design suffers from insufficient horizontal momentum, resulting in poor segregation of the layered materials. This study proposes an improved charging chute design profile that uses a cycloid curve and rolls to enhance segregation, thus reducing coal consumption and increasing productivity. To achieve this, we first modeled a charging chute using the cycloid curve. Secondly, building upon the cycloid concept, we created a roll-type chute by strategically placing rollers along the cycloid trajectory. Finally, the cycloid roll-type charging chute, integrating the cycloid trajectory with the roll-shaped charging chute, was simulated. Pilot tests comparing the cycloid roll-type and straight chute models demonstrated a significant increase in dispersion for the cycloid roll-type design, with a 65% improvement in the Strand-ward segregation (Sw) index compared to the straight chute. Furthermore, actual filed implementation in a sintering process achieved a 2.9% increase in operational productivity and a 6% reduction in fuel consumption. This study is significant not only for proposing an optimal chute design, but also for successfully implementing it in a full-scale steel mill, contributing to a reduction in fuel consumption and carbon reduction in steel mills.

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Section: Reinforcing Sinter Charging Segregationmentioning

confidence: 99%

Development of Cycloid-Shaped Roll Charging Chute for Sintering Process for Energy Decarbonization and Productivity Improvement in Steel Plants

Kwon,

Choi,

Lee

2024

Energies

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Effect of particle packing structure on the elastic modulus of wet powder compacts analyzed by persistent homology

Ishihara

Franks

Kano

2023

Advanced Powder Technology

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Development of Simpler Coarse-Grain Model for Analyzing Behavior of Particles in Fluid Flow

et al. 2021

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A new simpler coarse-grain model (SCG) for analyzing particle behaviors under fluid flow in a dilute system, by using a discrete element method (DEM), was developed to reduce calculation load. In the SCG model, coarse-grained (CG) particles were enlarged from original particles in the same way as the existing coarse-grain model; however, the modeling concept differed from the other models. The SCG model focused on the acceleration by the fluid drag force, and the CG particles’ acceleration coincided with that of the original particles. Consequently, the model imposed only the following simple rule: the product of particle density and squared particle diameter is constant. Thus, the model had features that can be easily implemented in the DEM simulation to comprehend the modeled physical phenomenon. The model was validated by comparing the behaviors of the CG particles with the original particles in the uniform and the vortex flow fields. Moreover, the usability of the SCG model on simulating real dilute systems was confirmed by representing the particle behavior in a classifier. Therefore, the particle behavior in dilute particle-concentration systems would be analyzed more simply with the SCG model.

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Analysis of the Effect of Ventilation Bars on the Packing Structure of Sinter Bed by DEM Simulation

Cited by 3 publications

References 28 publications

Development of Cycloid-Shaped Roll Charging Chute for Sintering Process for Energy Decarbonization and Productivity Improvement in Steel Plants

Development of Cycloid-Shaped Roll Charging Chute for Sintering Process for Energy Decarbonization and Productivity Improvement in Steel Plants

Effect of particle packing structure on the elastic modulus of wet powder compacts analyzed by persistent homology

Development of Simpler Coarse-Grain Model for Analyzing Behavior of Particles in Fluid Flow

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