Mass transfer in the ladle refining of steel with gas mixing

Burmasov, S. P.; Gudov, A. G.; Yaroshenko, Yu. G.; Meling, V. V.; Dresvyankina, L. E.

doi:10.3103/s096709121509003x

Cited by 6 publications

(1 citation statement)

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“…Many empirical correlations [33][34][35][36][37] have been obtained from experimental data to calculate the mass transfer rate, K, in gas-stirred ladles. The correlation between K and k m can be expressed as [38] Fig . 14-(a) The comparison of the mass transfer rate predicted within this study against those calculated from the empirical correlations in Ref.…”

Section: E Effects Of the Gas Flow Ratementioning

confidence: 99%

Mathematical Investigation of Fluid Flow, Mass Transfer, and Slag-steel Interfacial Behavior in Gas-stirred Ladles

Cao

Nastac

2018

Metall Mater Trans B

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In this study, the Euler-Euler and Euler-Lagrange modeling approaches were applied to simulate the multiphase flow in the water model and gas-stirred ladle systems. Detailed comparisons of the computational and experimental results were performed to establish which approach is more accurate for predicting the gas-liquid multiphase flow phenomena. It was demonstrated that the Euler-Lagrange approach is more accurate than the Euler-Euler approach. The Euler-Lagrange approach was applied to study the effects of the free surface setup, injected bubble size, gas flow rate, and slag layer thickness on the slag-steel interaction and mass transfer behavior. Detailed discussions on the flat/non-flat free surface assumption were provided. Significant inaccuracies in the prediction of the surface fluid flow characteristics were found when the flat free surface was assumed. The variations in the main controlling parameters (bubble size, gas flow rate, and slag layer thickness) and their potential impact on the multiphase fluid flow and mass transfer characteristics (turbulent intensity, mass transfer rate, slag-steel interfacial area, flow patterns, etc.,) in gas-stirred ladles were quantitatively determined to ensure the proper increase in the ladle refining efficiency. It was revealed that by injecting finer bubbles as well as by properly increasing the gas flow rate and the slag layer thickness, the ladle refining efficiency can be enhanced significantly.

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Section: E Effects Of the Gas Flow Ratementioning

confidence: 99%

Mathematical Investigation of Fluid Flow, Mass Transfer, and Slag-steel Interfacial Behavior in Gas-stirred Ladles

Cao

Nastac

2018

Metall Mater Trans B

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Method for estimating the sulfide capacity of slags in ladle furnace unit using the ionic theory

Metelkin

Sheshukov

Shevchenko

et al. 2022

Proceedings of the 16th International Conference on Industrial Manufacturing and Metallurgy (Icimm 2021)

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Calculation of sulfur removal in ladle furnace unit by means of ionic theory of slags

Savelyev¹,

Sheshukov

Metelkin

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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This article describes issues of sulfur removal in ladle furnace unit. First of all, metal desulfurization in ladle steel treatment units is achieved due to transition of sulfur to the slag phase. Coefficient of partition of sulfur between metal and slag is affected by sulfide capacity of slag, coefficient of activity of sulfur in the metal, oxidation potential of medium and reaction equilibrium constant of partition of sulfur between metal and slag. Temperature of liquid state in the ladle has significant impact on sulfide capacity of slag. Proposed calculation procedure based on provisions of ionic structure of slags allows evaluating a concentration of sulfur in steel on the basis of determination of coefficient of its partition between metal and slag. Optical basicity is suggested as criterion of refining property of slag, it has been shown that the amphoteric oxide Al2O3 is essential to calculation of this indicator. Its impact on sulfide capacity of slag is detected.

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Mass transfer in the ladle refining of steel with gas mixing

Cited by 6 publications

References 0 publications

Mathematical Investigation of Fluid Flow, Mass Transfer, and Slag-steel Interfacial Behavior in Gas-stirred Ladles

Mathematical Investigation of Fluid Flow, Mass Transfer, and Slag-steel Interfacial Behavior in Gas-stirred Ladles

Method for estimating the sulfide capacity of slags in ladle furnace unit using the ionic theory

Calculation of sulfur removal in ladle furnace unit by means of ionic theory of slags

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