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

Savelyev, M. V.; Sheshukov, O. Yu.; Metelkin, A. A.; Shevchenko, O. I.; Egiazar’yan, D. K.

doi:10.1088/1757-899x/966/1/012068

Cited by 3 publications

References 9 publications

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Analysis of parameters technological gas emissions neutralization during the sintering process of phosphorite agglomerate

Nezamaev,

Borisov,

Bobkov

et al. 2024

E3S Web of Conf.

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This study analyzes the specific properties and technological parameters of gas emissions from chemical-energy processes [1], considering the volume and content of toxic components, as well as the operating experience of gas emission purification systems at existing phosphate plants. A three-stage system of apparatuses is studied for gas purification: an ensemble of single cyclones, foam aggregates irrigated with aqueous caustic soda solution. It is established that cyclones are the most suitable apparatus for dry gas cleaning, and that their diameter should be no more than one meter to increase the efficiency of cleaning. It has been demonstrated through scientific research that when cleaning phosphorite sintering gases, which have a volume exceeding the capacity of a single cyclone, it is necessary to use group cyclones. These are several cyclones combined into one group with a common hopper. It is recommended that the cyclone speed be increased by approximately 50% in comparison to the standard speed, which contributes to an increase in the efficiency of the separation of impurities in the purified gas.

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Analysis of parameters technological gas emissions neutralization during the sintering process of phosphorite agglomerate

Nezamaev,

Borisov,

Bobkov

et al. 2024

E3S Web of Conf.

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Analysis of physicochemical processes for sulfur removal during ore raw material sintering

Nezamaev,

Bobkov,

Shutova

et al. 2024

AIP Conference Proceedings

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Assessment of homogeneity of ladle-furnace refining slag by calculation and experimental methods

Murysev,

Sheshukov,

Safonov

et al. 2024

Izv. vysš. učebn. zaved., Čern. metall.

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The paper considers the issues of determining undissolved CaO and MgO particles in slags formed in a ladle-furnace unit. The assessment of slags by the presence and quantity of undissolved oxides CaO and MgO, depending on chemical composition, was carried out using a polymer model developed at UrFU and improved at IMeT UrB RAS. To determine the saturation of a multicomponent melt by CaO and MgO oxides, it is necessary to compare two parameters: thermodynamic activity of oxide in the melt, which depends on chemical composition, and saturation activity, which depends on temperature. The authors propose a method for estimating the content of undissolved particles in the slags formed at the steel ladle treatment at JSC VMZ. Most slags contain undissolved lime in an amount less than 10 %, which is sufficient for successful steel desulfurization. Theoretical calculations for determination of undissolved particles were confirmed in laboratory conditions during studies of industrial slags with a Stengelmeyer viscometer. Laboratory experiments showed the accuracy of the calculated method for determining the solid phase in the slags formed in ladle-furnace unit by comparing the viscosity changes with a decrease in the slags temperature. Solidification temperature of heterogeneous slag is 200 °C higher than that of homogeneous one. When temperature of heterogeneous slag decreased, enlarged agglomerates of solid oxides were formed, which fell under the measuring device, respectively, it showed an increased viscosity of the oxide system in the temperature range of 1570 – 590 °C. Laboratory experiments confirm the methodology for determining the solid phase in the slag.

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

Cited by 3 publications

References 9 publications

Analysis of parameters technological gas emissions neutralization during the sintering process of phosphorite agglomerate

Analysis of parameters technological gas emissions neutralization during the sintering process of phosphorite agglomerate

Analysis of physicochemical processes for sulfur removal during ore raw material sintering

Assessment of homogeneity of ladle-furnace refining slag by calculation and experimental methods

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