Surface Tension of Melts of CaO–SiO2–Al2O3–B2O3 System

Акбердин, А. А.; Kim, A. S.; Султангазиев, Р. Б.

doi:10.3103/s0967091221010022

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Sulfur removal is carried out by treating the metal in ladle-furnace (UKP) with refining slags. High-basic slags of the CaO-Al2O3-SiO2 system with CaF2 additives are currently used as refining slags [1][2][3][4][5][6][7][8]. Fluorspar has a strong liquefying effect on slags, however, the fluorides formed during metal processing are highly volatile, which, as a result, causes a change in the properties of the slag.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical and Experimental Studies of Sulfur and Boron Distribution between the Slag of the CaO-SiO2-B2O3-MgO-Al2O3 System and the Metal

Бабенко

Смирнов

Уполовникова

2021

DDF

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The equilibrium interfacial distribution of sulfur and boron was estimated using the HSC 6.1 Chemistry software package (Outokumpu) and the simplex-lattice planning method. Adequate mathematical models have been constructed in the form of III degree polynomial, which describe the effect of the composition of the studied oxide system on the equilibrium distribution of sulfur and boron between the slag and the metal. Generalization of the results of experimental studies and thermodynamic modeling made it possible to obtain new data on the influence of the basicity and content of B2O3 in the slag of the CaO-SiO2-B2O3-MgO-Al2O3 system on the interphase distribution of sulfur and boron. It was found that in the range of boron oxide concentration of 1.0-10%, an increase in slag basicity from 2 to 5 at 1600°C leads to an increase in the sulfur distribution coefficient from 1 to 20 and, as a consequence, a decrease in the sulfur content in the metal from 0.02 to 0.0014 %, i.e. an increase in slag basicity favorably affects the development of the metal desulfurization process. An increase in the B2O3 content from 2.0 to 10.0% in slags formed in the region of moderate basicity, not exceeding 2-3, is accompanied at 1600°C by a decrease in the boron interphase distribution coefficient from 450 to 150 and an increase in the boron concentration in the metal from 0.006 to 0.021 %, which indicates the progress of boron reduction from slag to metal. The shift of the formed slags to the area of increased basicity up to 5.0 shows a high degree of boron reduction from slag to metal. The results of the laboratory experiment confirmed the results of thermodynamic modeling.

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Section: Introductionmentioning

confidence: 99%

“…One of the ways to solve this problem is to use boron oxide instead of fluorspar. This oxide is able to reduce the crystallization temperature and slag viscosity, providing effective metal desulfurization [9][10][11][12][13][14][15][16]. In addition, when boron oxide is used in the slag, the process of boron reduction occurs [14].…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Studies of Sulfur and Boron Distribution between the Slag of the CaO-SiO2-B2O3-MgO-Al2O3 System and the Metal

Бабенко

Смирнов

Уполовникова

2021

DDF

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“…The effectiveness of its use is related to the diluting effect on formed slags. In this case, the short-term action of fluorspar on slags physicochemical properties caused by the decrease in calcium fluoride concentration due to the high volatility of fluorides under hightemperature conditions is accompanied by a decrease in the effectiveness of sulphide capacities use of the fluorine-containing slags [1,[4][5][6]. The environmental hazard of volatile fluorides and their aggressiveness in relation to equipment and refractory lining of ladles cause the need to develop free fluoride slags with low viscosity and high refining properties [1].…”

Section: Introductionmentioning

confidence: 99%

Fundamental Research as a Basis for the Creation of New Technologies in Steel Ladle Metallurgy

Бабенко

Смирнов

Уполовникова

2019

MSF

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Theoretical and experimental studies including a study of slag viscosity of the CaO-SiO2-B2O3 system containing 25% Al2O3 and 8% MgO and equilibrium interphase distribution of sulfur and boron between slag and a low-carbon metal were carried out using a simplex-lattice experiment design and HSC 6.1 Chemistry software (Outokumpu). Fundamental research has contributed to the development of technology of basic boron-containing slags formation in ladle at ladle-furnace. These slags have a low viscosity, retaining high refining properties and providing direct microalloying of steel by boron. This technology has no analogues in domestic and foreign practice. The development of technology in the converter plant AO "ArcelorMittal Temirtau" (Kazakhstan) provided low-carbon steel production in wide grade composition, containing 0.001-0.008% boron and 0.004-0.014% sulfur, decreased consumption of manganese, high mechanical properties of rolled metal and improved environmental conditions.

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Effect of B2O3 on the Liquidus Temperature and Phase Equilibria in the CaO–Al2O3–SiO2–B2O3 Slag System, Relevant to the Smelting of E-waste

Islam

Pownceby

Somerville

et al. 2022

J. Sustain. Metall.

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Surface Tension of Melts of CaO–SiO2–Al2O3–B2O3 System

Cited by 3 publications

References 7 publications

Theoretical and Experimental Studies of Sulfur and Boron Distribution between the Slag of the CaO-SiO<sub>2</sub>-B<sub>2</sub>O<sub>3</sub>-MgO-Al<sub>2</sub>O<sub>3</sub> System and the Metal

Theoretical and Experimental Studies of Sulfur and Boron Distribution between the Slag of the CaO-SiO<sub>2</sub>-B<sub>2</sub>O<sub>3</sub>-MgO-Al<sub>2</sub>O<sub>3</sub> System and the Metal

Fundamental Research as a Basis for the Creation of New Technologies in Steel Ladle Metallurgy

Effect of B2O3 on the Liquidus Temperature and Phase Equilibria in the CaO–Al2O3–SiO2–B2O3 Slag System, Relevant to the Smelting of E-waste

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