Experimental investigation on the effect of granulation moisture on the flame front propagation and pore structure in the high-temperature zone of the sinter bed

Zhou, Hao; Meng, Hanxiao; Ma, Pengnan; Wang, Jiankang; Cheng, Fangzheng; Fang, Hao

doi:10.1016/j.powtec.2021.11.026

Cited by 7 publications

(2 citation statements)

References 40 publications

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“…In severe cases, the pallet floor may be damaged, resulting in a shortened lifespan of the equipment. The mentioned disadvantages are inherently related to the heat propagation phenomenon in the downward suction sintering process [4]. Immediately after ignition, the combustion of the coal component in the mixed raw materials takes place within the raw material layer, and due to downward suction, a narrow combustion layer progresses in the form of a heat wave.…”

Section: Problem Statement and Research Objectivesmentioning

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: Problem Statement and Research Objectivesmentioning

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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“…H. Zhou et al [73][74][75] carried out CFD calculation and analysis of the pressure drop and effective thermal conductivity of the sintering bed based on the porous medium structure. In this study, the real pore structure in the sintering bed was reproduced based on X-ray microtomography.…”

Section: Simulation Considering Actual Production Parameters and Prod...mentioning

confidence: 99%

Numerical Simulation of Heat and Mass Transfer Behavior during Iron Ore Sintering: A Review

Liu

Wang

et al. 2023

Metals

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Accurate computational models of sintering behavior would assist to enhance sinter quality and are anticipated to play a role in yield prediction. Sintering is a vital process in the manufacturing of iron and steel. As a consequence, the primary objective of these models will be a thorough simulation of mass and heat transport during the sintering process. In this paper, based on the examination and integration of previous studies, the fundamental physical formula and chemical reactions of the numerical simulation of the sintering process are introduced in depth with mechanism analysis. Furthermore, in view of the current numerical simulation methods and sintering process technology innovation development, the studies on sintering numerical simulation are reviewed from different angles, of which the main methods and assumptions are discussed. Finally, the current state of sintering simulation including the numerical simulation of innovative algorithm and optimized sintering technology is discussed in detail, along with potential implications for model development.

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Super-high bed sintering for iron ores: behaviors, causes and solutions of horizontal segregation on strand

Xu,

Liu,

Dong

et al. 2023

J. Iron Steel Res. Int.

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Experimental investigation on the effect of granulation moisture on the flame front propagation and pore structure in the high-temperature zone of the sinter bed

Cited by 7 publications

References 40 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

Numerical Simulation of Heat and Mass Transfer Behavior during Iron Ore Sintering: A Review

Super-high bed sintering for iron ores: behaviors, causes and solutions of horizontal segregation on strand

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