A CFD and Experimental Investigation of Slag Eye in Gas Stirred Ladle

Ramasetti, Eshwar Kumar; Visuri, Ville‐Valtteri; Sulasalmi, Petri; Fabritius, Timo

doi:10.11159/ffhmt18.148

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…However, the slag layer opening and the skin friction coefficient value decreased. In a recent work by Ramasetti et al, [87] the same method was also used to predict open eye formation. In the work of Huang et al, [49] the VOF model and the large eddy simulation (LES) model were used to analyze slag droplet entrainment in the open eye zone.…”

Section: Vof Modelmentioning

confidence: 99%

A Review of Physical and Numerical Approaches for the Study of Gas Stirring in Ladle Metallurgy

Liu

Ersson

et al. 2018

Metall Mater Trans B

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This article presents a review of the research into gas stirring in ladle metallurgy carried out over the past few decades. Herein, the physical modeling experiments are divided into four major areas: (1) mixing and homogenization in the ladle; (2) gas bubble formation, transformation, and interactions in the plume zone; (3) inclusion behavior at the steel-slag interface and in the molten steel; and (4) open eye formation. Several industrial trials have also been carried out to optimize gas stirring and open eye formation. Approaches for selecting criteria for scaling to guarantee flow similarity between industrial trials and physical modeling experiments are discussed. To describe the bubble behavior and two-phase plume structure, four main mathematical models have been used in different research fields: (1) the quasi-single-phase model, (2) the volume of fluid (VOF) model, (3) the Eulerian multiphase (E-E) model, and (4) the Eulerian-Lagrangian (E-L) model. In recent years, the E-E model has been used to predict gas stirring conditions in the ladle, and specific models in commercial packages, as well as research codes, have been developed gradually to describe the complex physical and chemical phenomena. Furthermore, the coupling of turbulence models with multiphase models is also discussed. For physical modeling, some general empirical rules have not been analyzed sufficiently. Based on a comparison with the available experimental results, it is found that the mathematical models focusing on the mass transfer phenomenon and inclusion behaviors at the steel-slag interface, vacuum degassing at the gas-liquid interface, dissolution rate of the solid alloy at the liquid-solid interface, and the combination of fluid dynamics and thermodynamics need to be improved further. To describe industrial conditions using mathematical methods and improve numerical modeling, the results of physical modeling experiments and industrial trials must offer satisfactory validations for the improvement of numerical modeling.

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Section: Vof Modelmentioning

confidence: 99%

A Review of Physical and Numerical Approaches for the Study of Gas Stirring in Ladle Metallurgy

Liu

Ersson

et al. 2018

Metall Mater Trans B

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“…When argon is injected in molten steel through a submerged lance or a porous plug located at the bottom of the ladle, the gas jet breaks up into bubbles. The rising bubbles break the up-World Journal of Engineering and Technology per slag layer and create an open eye in the slag [4]. At low gas flow rates, discrete bubbles form at the plug exit, but at higher flow rates bubbles coalesce at the nozzle itself and assume a large size before detachment [5].…”

Section: Introductionmentioning

confidence: 99%

“…Cold physical modeling and Computational Fluid Dynamics simulations are commonly employed as tools for the analysis [6]. The effect of the gas flow rate on the fluid flow and open eye formation is studied in [4] using a water model. A numerical simulation of eye formation and slag entrapment in a ladle with bottom injection is reported in [7].…”

Section: Introductionmentioning

confidence: 99%

Lance Design for Argon Bubbling in Molten Steel

Cruz¹,

Barrón²,

Medina³

et al. 2020

WJET

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Three lance designs for argon bubbling in molten steel are presented. Bottom bubbling is considered too. Geometries considered are straight-shaped, T-shaped, and disk-shaped. The bubbling behavior of these lances is analyzed using Computational Fluid Dynamics, so transient three dimensional, isothermal, two-phase, numerical simulations were carried out. Using the numerical results, the bubble distribution and the open eye area are analyzed for the considered lance geometries. The plume volume is calculated from the open eye area and the lance immersion depth using geometrical considerations. Among the three lance designs considered, disk-shaped lance has the bigger plume volume and the smaller mixing time. As the injection lance is deeper immersed, the power stirring is increased and the mixing time is decreased.

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Mathematical and Fuzzy Model for Slag Thickness Control Automation in Gas-Stirred Ladle

Krasnikov

2024

2024 14th International Conference on Advanced Computer Information Technologies (ACIT)

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A CFD and Experimental Investigation of Slag Eye in Gas Stirred Ladle

Cited by 3 publications

References 8 publications

A Review of Physical and Numerical Approaches for the Study of Gas Stirring in Ladle Metallurgy

A Review of Physical and Numerical Approaches for the Study of Gas Stirring in Ladle Metallurgy

Lance Design for Argon Bubbling in Molten Steel

Mathematical and Fuzzy Model for Slag Thickness Control Automation in Gas-Stirred Ladle

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