Powder Injection Effect on Hot Metal Desulfurization Behavior in the Kanbara Reactor: a Transient 3D Coupled Numerical Model

Jia, Shuyuan; He, Zhu; De-gang, Ouyang; Zhu, Shanhe; Sun, Wei; Wang, Qiang

doi:10.2355/isijinternational.isijint-2021-331

Cited by 6 publications

(13 citation statements)

References 30 publications

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“…For that purpose, the laminar model was chosen, as the fluid is in laminar flow for there is neither a stirring paddle nor injected gas in the experiment stirring the hot iron. The mass, momentum, and energy balance equations are solved separately and can be expressed as equations ( 7)-( 10) [35,36].…”

Section: Governing Equations and Solution Methodologymentioning

confidence: 99%

Numerical simulation of the dolomite in-situ desulfurization in molten iron

Shen

Yu²,

Zhang³

et al. 2023

Mater. Res. Express

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With the growing need for high-quality steel, the requirement for efficient deep desulfurization technologies is growing, and lots of research have be conducted. The desulfurization in hot iron with Mg produced in situ by the aluminothermic reduction of decomposed dolomite was simulated. The magnesium generated at the molten matte-slag interface is dissolved in the molten iron and desulfurizing while spread downwards The process has been studied by experiment and computational fluid dynamics simulation. Some analysis and assumptions were made for the simulation conditions and the simulated data are in good agreement with the experimental results. The rate of desulfurization depended mainly on the reaction rate and is almost independent of the rate of diffusion of Al、S and Mg according to the results. Under the present experimental conditions, the desulfurization rate increased with the increase in temperature and the amount of reactants. However, the effect is not obvious when the temperature is higher than 1623K. The adjustment in diffusion coefficient has minimal influence on the desulfurization efficiency. The desulfurization reaction is mainly in the homogeneous phase, and the proportion of magnesium bubble desulfurization could be ignored when the temperature is higher than 1523K.

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Section: Governing Equations and Solution Methodologymentioning

confidence: 99%

Numerical simulation of the dolomite in-situ desulfurization in molten iron

Shen

Yu²,

Zhang³

et al. 2023

Mater. Res. Express

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show abstract

“…The interphase forces, in this instance, comprise the drag force, virtual mass force, and turbulence dispersion force. [3,13,14] To predict turbulence in the flow, the standard k-ε model is utilized. In the present scenario, the dispersed multiphase turbulence model is taken into account.…”

Section: Multiphase Turbulence Flow-field Modelingmentioning

confidence: 99%

“…[2][3][4][5] Additionally, temperature differences in various parts of the ladle are also typically within the 50 °C range. [3] Although changes in temperature can affect the flow dynamics and chemical reaction rate, the impact can be considered limited when the temperature difference is less than 50 °C, in comparison to the bulk iron temperature of 1350 °C. These are also the reasons why many current researches assume isothermal condition in their mathematic models, [6,7] and the desulfurization rate is primarily influenced by the flow field and boundary injection conditions.…”

Section: Introductionmentioning

confidence: 99%

“…In their model, the reaction zone's shape is fixed. Jia et al [3] Based on the discussions earlier, the primary objective of this study is to develop and validate a comprehensive 3D transient CFD model for HMD using both calcium carbide and calcium oxide. This model will be benchmarked against experimental measurements to validate desulfurization rates.…”

Section: Introductionmentioning

confidence: 99%

“…The temperature variation before and after the treatment generally remains under 50 °C. [2][3][4][5] Additionally, temperature differences in various parts of the ladle are also typically within the 50 °C range. [3] Although changes in temperature can affect the flow dynamics and chemical reaction rate, the impact can be considered limited when the temperature difference is less than 50 °C, in comparison to the bulk iron temperature of 1350 °C.…”

Section: Introductionmentioning

confidence: 99%

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Hot‐Metal Desulfurization Using Calcium Carbide and Calcium Oxide in Transfer Ladle: A Computational Fluid Dynamics Investigation

Guo,

Mao,

Walla

et al. 2023

steel research int.

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This study presents a 3D transient Computational Fluid Dynamics (CFD) model that simulates hot metal desulfurization (HMD) using calcium carbide and calcium oxide in an experimental‐scale ladle with a 70 kg capacity. The model takes into account the efficiency of reagent particles penetrating carrier gas bubbles and is validated through experimental work, with an average difference of 7.06%. The research discusses the effects of varying reagent particle sizes, hot metal temperatures, gas flow rates, and ladle design on desulfurization rates. Results indicate that when particle diameter decreases from 30 um to 20.9 um and 11.8 um, desulfurization rates rise from 50.92% to 66.02% and 89.99%, respectively. Regarding hot metal temperature, a 100‐degree range results in a final desulfurization rate difference of less than 3%. The study also reveals that increasing the carrier gas flow rate from 13 SLPM to 15 SLPM reduces the removal rate by 6.10%. As particle gas flow rate increase from 200 g/min to 300 g/min, the removal rate increase by 9.02%. In the lance arrangement analysis, the duo lance system demonstrates nearly identical desulfurization performance to the single‐center lance system, which outperforms the off‐center lance system.This article is protected by copyright. All rights reserved.

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Numerical and Physical Simulation of Flux Entrainment Mechanism in Mechanical Stirring Processes

Yamamoto

Komarov

2022

Metall Mater Trans B

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Powder Injection Effect on Hot Metal Desulfurization Behavior in the Kanbara Reactor: a Transient 3D Coupled Numerical Model

Cited by 6 publications

References 30 publications

Numerical simulation of the dolomite in-situ desulfurization in molten iron

Numerical simulation of the dolomite in-situ desulfurization in molten iron

Hot‐Metal Desulfurization Using Calcium Carbide and Calcium Oxide in Transfer Ladle: A Computational Fluid Dynamics Investigation

Numerical and Physical Simulation of Flux Entrainment Mechanism in Mechanical Stirring Processes

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