EAF and LF slag co-processing: Study for wasteless utilization

Лобанов, Д. А.; Sheshukov, O. Yu.; Egiazar’yan, D. K.; Nekrasov, I. V.; Ovchinnikova, L. A.

doi:10.1063/5.0032720

Cited by 4 publications

(1 citation statement)

References 8 publications

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“…The LFS basicity was relatively high for desulfurization, it was set to 2.0 to ensure molten slag and improve the kinetics of the slag–metal reaction. The appropriate amount of Al 2 O 3 was used to significantly reduce the melting temperature, [ 26,27 ] and the necessary quantity of CaF 2 required for destructing the CaS solid to improve the desulfurization conditions [ 28 ] was employed. The Al 2 O 3 and F contents used were therefore 20 and 4 wt%, respectively.…”

Section: Methodsmentioning

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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Section: Methodsmentioning

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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Automated technology for the production of nanosized silicon dioxide and carbon

Kondrat’ev,

Govorkov,

Kolosov

et al. 2021

J. Phys.: Conf. Ser.

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Technology for the production of modifying additives for concrete and asphalt concrete

Sukhanov

Kolosov

Кондратьев

et al. 2021

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

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The article presents the results of the development of modifying additives for concretes and asphalt concrete, consisting of spherical SiO2 and fulleron, extracted from silicon production waste. The use of these additives can reduce the destruction of asphalt concrete pavements, increase water and frost resistance. The proposed technology is energy- and resource-saving, converting metallurgical production wastes into the class of “associated mineral raw materials” and improving the environmental situation in regions with the presence of metallurgical industries. The paper presents studies of the feedstock and characteristics of waste gases of silicon production, the characteristics of the main technological equipment for the production of modifiers, the instrumental-technological scheme of the production process, the chemical composition and quality indicators of the resulting spherical silicon dioxide. The order and relationship of the processes that make up the technology of the associated additives based on production of silicon have been determined. The economic effect of the use of these modifiers in asphalt concrete pavements is achieved by increasing the durability and increasing the turnaround time.

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EAF and LF slag co-processing: Study for wasteless utilization

Cited by 4 publications

References 8 publications

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

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

Automated technology for the production of nanosized silicon dioxide and carbon

Technology for the production of modifying additives for concrete and asphalt concrete

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