Sulfur Removal from Spent Ladle Refining Furnace Slag at High Temperature

Wu, Liushun; Liu, Kunlong; Xu, Wei; Wang, Jue; Wang, Haichuan; Dong, Yuan

doi:10.1007/s11663-021-02098-6

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…In most of the works the isothermal state has been used to reduce the computational cost. However, it has been experimentally shown that the temperature of the system affects the desulfurization of steel [26][27][28][29] and therefore its incorporation into the process must be taken into account. Likewise, the inclusion of the slag layer modifies the fluid-dynamics structure of the system, altering the convective movement, as well as mass transfer, 23) so it is essential to include this effect in the simulation.…”

Section: Desulphurization Kinetic Prediction Into a Steel Ladle By Co...mentioning

confidence: 99%

Desulphurization Kinetic Prediction into a Steel Ladle by Coupling Thermodynamic Correlations, Fluidynamics and Heat Transfer

et al. 2022

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Section: Desulphurization Kinetic Prediction Into a Steel Ladle By Co...mentioning

confidence: 99%

Desulphurization Kinetic Prediction into a Steel Ladle by Coupling Thermodynamic Correlations, Fluidynamics and Heat Transfer

et al. 2022

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“…The primary methods for removing sulfur from LFS include solid-state hightemperature oxidation, [13] solid-state hydrothermal leaching, [14] molten-state thermal oxidation, [15] and electric field strengthening. [16,17] However, in the first three methods previously listed, the existing forms of CaS and 11CaO-7A1 2 O 3 -CaS solid solutions hinder sulfur migration, wasting large amounts of cooling water and slag heat during the treatment process and causing secondary pollution by SO 2 .…”

Section: Introductionmentioning

confidence: 99%

Directional Sulfur Removal from Ladle Furnace Slag by Electric Field Strengthening Treatment

Xia

Lei

et al. 2023

steel research int.

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To develop a better understanding of the resource recycling of ladle furnace slag (LFS) in steel enterprises, electric field strengthening by direct current (DC) is tested as an effective method for sulfur removal from slag. Herein, sulfur removal from CaO–SiO2–Al2O3–MgO–CaF2–S (CSMAFS) slag with 4–12 wt% MgO under 0–6 V is observed at 1773 K, and the mechanism resulting from the electric field on sulfur migration is analyzed. It was concluded that with voltage increases in the range of 0–4 V, the slag network structure depolymerizes, and the melting temperature decreases, which are beneficial to sulfur migration. Mg2+, Ca2+, and other cations in the slag (cathode) are reduced, and S2− migrates to the molten steel (anode) to maintain electrochemical balance. However, sulfur migration reveals an opposite trend when the voltage is 6 V because the electric field force generated at 6 V is not sufficient to resist the combined forces of charge resistance and slag diffusion resistance.

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Recent research progress on recycling metallurgical waste slag and strengthening directional recovery of impurity elements by applied electric field

Xia,

Zhou,

Bao

et al. 2024

Chemical Engineering Journal

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Sulfur Removal from Spent Ladle Refining Furnace Slag at High Temperature

Cited by 5 publications

References 21 publications

Desulphurization Kinetic Prediction into a Steel Ladle by Coupling Thermodynamic Correlations, Fluidynamics and Heat Transfer

Desulphurization Kinetic Prediction into a Steel Ladle by Coupling Thermodynamic Correlations, Fluidynamics and Heat Transfer

Directional Sulfur Removal from Ladle Furnace Slag by Electric Field Strengthening Treatment

Recent research progress on recycling metallurgical waste slag and strengthening directional recovery of impurity elements by applied electric field

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