Surface Tension Calculation of Molten Slag in SiO&lt;sub&gt;2&lt;/sub&gt;–Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;–CaO–MgO Systems Based on a Statistical Modelling Approach

Xin, Jianjiang; Wang, Nan; Chen, Min; Gan, Lei

doi:10.2355/isijinternational.isijint-2018-746

Cited by 19 publications

(8 citation statements)

References 28 publications

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“…Depending on the composition, multicomponent slags generally have surface tension in the range from 0.30 to 0.70 N/m, [28,29] which corresponds to the ranges of surface tension found in the present study.…”

Section: B Surface Tension Of Femn Simn and Corresponding Slagssupporting

confidence: 80%

Interfacial Behaviour in Ferroalloys: The Influence of Sulfur in FeMn and SiMn Systems

Bublik

Bao

Tangstad

et al. 2021

Metall Mater Trans B

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The present study has investigated the influence of sulfur content in synthetic FeMn and SiMn from 0 to 1.00 wt pct on interfacial properties between these ferroalloys and slags. The effect of experimental parameters such as temperature and holding time was evaluated. Interfacial interaction between ferroalloys and slags was characterized by interfacial tension and apparent contact angle between metal and slag, measured based on the Young–Laplace equation and an inverse modelling approach developed in OpenFOAM. The results show that sulfur has a significant influence on both interfacial tension and apparent contact angle, decreasing both values and promoting the formation of a metal-slag mixture. Despite the fact that sulfur was added only to the ferroalloys, most of sulfur is distributed into slag after reactions with the metal phase. Increasing the maximum experimental temperature in the sessile drop furnace also resulted in a decrease of both interfacial properties, resulting in higher mass transfer rates and intensive reactions between metal and slag. The effect of holding time demonstrated that after reaching equilibrium in FeMn-slag and SiMn-slag systems (both with and without sulfur), interfacial tension and apparent contact angle remain constant.

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Section: B Surface Tension Of Femn Simn and Corresponding Slagssupporting

confidence: 80%

Interfacial Behaviour in Ferroalloys: The Influence of Sulfur in FeMn and SiMn Systems

Bublik

Bao

Tangstad

et al. 2021

Metall Mater Trans B

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“…The parameter values of the components SiO 2 , Al 2 O 3 , CaO and MgO had been optimized for SiO 2 -Al 2 O 3 -CaO-MgO multicomponent systems in a previous study. 17) Considering the effects of iron oxides on melt structure, the parameter values of the components SiO 2 , Al 2 O 3 , CaO and MgO were optimized using iron-containing surface tension data in this study and no obvious changes was found compared with the parameter values obtained in SiO 2 -Al 2 O 3 -CaO-MgO multicomponent systems in a previous study. In view of the universality of model parameters, the parameter values of the components SiO 2 , Al 2 O 3 , CaO and MgO obtained in a previous study would be accepted in the present model, thus only the parameters related with the 'FeO' and 'Fe 2 O 3 ' systems were optimized in this study.…”

Section: Model Descriptionmentioning

confidence: 91%

“…The same surface tension model 17) successfully developed for SiO 2 -Al 2 O 3 -CaO-MgO systems was expanded to FeO x -containing systems in this study. The surface tension of molten slag was calculated on the basis of Eq.…”

Section: Model Descriptionmentioning

confidence: 99%

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Surface Tension Calculation of Molten Slag in SiO2–Al2O3–CaO–MgO–‘FeO’–‘Fe2O3’ Systems Based on a Statistical Modelling Approach

2020

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A calculation model for surface tension of molten slags in SiO 2-Al 2 O 3-CaO-MgO systems, based on a statistical modelling approach, was further extended to SiO 2-Al 2 O 3-CaO-MgO-'FeO'-'Fe 2 O 3 ' multi-component systems. A total number of 1493 surface tension data reported in literatures, including 661 iron-containing data in this study, have been collected and critically reviewed for optimizing model parameters. The model achieves an excellent agreement with literature values for iron-containing melts with an average error of 4.9% and overall absolute error of 29.75 mN/m. Moreover, the dependence of surface tension on composition and temperature the composition has been discussed using the present model. The results show that the surface tension always obviously decrease with the increment of SiO 2 content and substitution of CaO or Al 2 O 3 by MgO will cause a decrease in the surface tension. In case of silica-free ternary systems such as the Al 2 O 3-CaO-'Fe 2 O 3 ' and CaO-MgO-'Fe 2 O 3 ', the surface tension decreases with increasing 'Fe 2 O 3 ' concentration with constant Al 2 O 3 and CaO level respectively, indicating the network former role of 'Fe 2 O 3 ' in these studied systems. Temperature coefficient is closely related with the melt composition and positive values for high 'FeO' and 'Fe 2 O 3 ' contents in the melts were found.

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“…However, studies on slags in steel production have shown that surface tension of most multicomponent slags lies in the range from 0.30 to 0.70 N/m. [99][100][101] Bublik et al 102 have found that surface tension of slags corresponding to FeMn and SiMn production are 0.65 and 0.50 N/m, respectively. IV.…”

Section: Surface and Interfacial Tensionmentioning

confidence: 99%

Slag Properties in the Primary Production Process of Mn-Ferroalloys

Tangstad

Bublik

Haghdani

et al. 2021

Metall Mater Trans B

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The thermodynamic and kinetic properties of the carbothermic reduction of MnO in the five-component slag, MnO-SiO2-CaO-MgO-Al2O3, is critical in the production process of Mn-ferroalloys. While the reduction rate is mainly dependent on the presence of a solid MnO phase in the slag for Mn-Fe-alloys, the rate for the Mn-Si-Fe alloys has two distinct steps, a slow step followed by a fast step. The extent of the slow step has been shown to be dependent on the S content in the slag. The thermo-physical properties of viscosity, density, interfacial tension and electrical resistivity is reviewed, and these properties are mainly determined by the total basicity.

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Surface Tension Calculation of Molten Slag in SiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub>–CaO–MgO Systems Based on a Statistical Modelling Approach

Cited by 19 publications

References 28 publications

Interfacial Behaviour in Ferroalloys: The Influence of Sulfur in FeMn and SiMn Systems

Interfacial Behaviour in Ferroalloys: The Influence of Sulfur in FeMn and SiMn Systems

Surface Tension Calculation of Molten Slag in SiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub>–CaO–MgO–‘FeO’–‘Fe<sub>2</sub>O<sub>3</sub>’ Systems Based on a Statistical Modelling Approach

Slag Properties in the Primary Production Process of Mn-Ferroalloys

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