Influence of Slag Viscosity and Composition on the Inclusion Content in Steel

You, Dali; Bernhard, Christian; Mayerhofer, Alexander; Michelic, Susanne Katharina

doi:10.2355/isijinternational.isijint-2021-213

Cited by 11 publications

(5 citation statements)

References 36 publications

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“…The concentrations of the species at the interface of the molten steel and slag are calculated using Equation ( 12)- (18).…”

Section: Slag-steel Kinetic Modelmentioning

confidence: 99%

“…According to previous studies, [12][13][14][15][16][17][18][19][20][21][22][23][24][25][32][33][34][35][36][37][38] the mass transfer coefficient for the metal side k m was 1 Â 10 À5 -2.0 Â 10 À4 m s À1 . The mass transfer coefficient of SiO 2 for the slag side was 1 Â 10 À7 -2.0 Â 10 À6 m s À1 , and it was 1.0 Â 10 À6 -1.0 Â 10 À5 m s À1 for the other components in the slag.…”

Section: Mass Transfer Coefficientmentioning

confidence: 99%

“…The kinetic behavior of steel and slag components is analyzed using a large kinetic model including a simple model assuming the rate-limiting step to be the mass transport on the steel or slag side, [12] the coupled reaction model, [13,14] and the effective equilibrium reaction zone model. [15][16][17][18] Among these models, the coupled reaction model is widely used to analyze the component change of slag and steel in the metallurgy process. [13,14,[19][20][21][22][23] The coupled reaction model, comprising the mass transfer equations of each component, was proposed by Ohguchi et al, who applied this model to the Fe-C-Si-P-S-Mn-O reactions in hot metal dephosphorization and desulfurization.…”

Section: Introductionmentioning

confidence: 99%

“…Although these studies [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] focused on the reaction between Tibearing steel or Al-killed steel and slag from thermodynamics and kinetics, the kinetic characterization of the reaction between Tibearing steel and slag with different (TiO 2 ) remains insufficient. In this study, a kinetic model, which contained the oxidation of components of Ti-bearing steel and was computed easily, was built based on the couple reaction model, to predict the composition of liquid steel and slag for high-Ti-bearing steel and slag with different (TiO 2 ).…”

Section: Introductionmentioning

confidence: 99%

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Development of a Kinetic Model for Ti‐Bearing Steel‐Slag Reaction

Zhao

Líu

Wang

et al. 2023

steel research int.

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A kinetic model based on the double-film theory is developed to predict the composition-change behavior of Ti-bearing steel and slag during the slag-liquid steel reaction process and validated by experimental results. The chemical reactions between the slag-metal, slag-crucible refractory, and metal-crucible refractory are considered. Specifically, a coupled reaction model based on the CaO-MgO-CaF 2 -SiO 2 -Al 2 O 3 -TiO 2 -FeO-MnO and Fe-Si-Al-Ti-Ca-Mg-Mn-S-O systems is applied to describe the reaction between liquid steel and slag. Furthermore, the activity coefficients of slag components are calculated using the ion and molecular coexistence theory model. The reaction between the slag and refractory is described using an empirical equation. The reaction between the liquid steel and refractory is described using a coupled reaction model, wherein the reaction between [Al] and MgO is considered. Finally, the effect of (TiO 2 ) on the [Ti] is discussed using this model. The results indicate that the [Ti] decreases, the [Si] increases, and the [Al] increases initially and subsequently decreases with reaction time. An increase in (TiO 2 ) can decrease the oxidation of [Ti] by (SiO 2 ) and (Al 2 O 3 ). When the (TiO 2 ) increases, the mass ratio of CaO to SiO 2 should be further increased to decrease the oxidation of [Ti].

show abstract

“…The concentrations of the species at the interface of the molten steel and slag are calculated using Equation ( 12)- (18).…”

Section: Slag-steel Kinetic Modelmentioning

confidence: 99%

Section: Mass Transfer Coefficientmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of a Kinetic Model for Ti‐Bearing Steel‐Slag Reaction

Zhao

Líu

Wang

et al. 2023

steel research int.

View full text Add to dashboard Cite

show abstract

“…The non-metallic inclusions can be controlled by optimizing operations from steel refining to continuous casting. The recent studies (You et al, 2021;Scheller and Shu, 2014) have revealed the impact of reaction between slag/flux and steel on the inclusion evolutions during steel refining. Among these, the optimization of ladle slag/flux is one of the crucial steps for achieving better steel cleanliness.…”

mentioning

confidence: 99%