Influence of Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/SiO&lt;sub&gt;2&lt;/sub&gt; and BaO/Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; Ratios on Rheological and Crystallization Behavior of CaO–BaO–Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;-Based Mold Slags

Yan, Xiaogang; Wang, Xueyou; Wang, Shisong; Zhang, Shaoda; Zhang, Xubin; Wang, Qiangqiang; Wang, Qian

doi:10.2355/isijinternational.isijint-2021-565

Cited by 5 publications

(1 citation statement)

References 44 publications

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“…In order to design the appropriate mold flux for improving the steel quality, many studies regarding the effects of chemical compositions such as CaF 2 , B 2 O 3 , Na 2 O, Li 2 O, BaO, Ce 2 O 3 , La 2 O 3 on viscosity, melting point and crystalline behavior of mold flux were investigated and established the corresponding theories [9][10][11][12][13][14] . There were also some studies focused on the mold fluxes with different CaO/SiO 2 , CaO/Al 2 O 3 , Al 2 O 3 /SiO 2 , BaO/Al 2 O 3 ratios meeting the properties requirements, which will be employed to ensure the different steels casting [15][16][17] . Whereas the industrial mold flux is mostly composed of complex mineral raw materials and other solid wastes, the experimental mold flux made of individual chemicals is inaccurate to obtain these physicochemical properties data, and which cannot be directly used to guide the industrial production.…”

Section: Introductionmentioning

confidence: 99%

Effects of Mineral Raw Materials on Melting and Crystalline Properties of Mold Flux and Mineralogical Structures of Flux Film for Casting Peritectic Steel Slab

et al. 2023

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During peritectic steel continuous casting, mold flux properties and flux film structures play significant roles in controlling slab quality. In this study, mold fluxes and flux films for casting peritectic steel slab were obtained using mineral raw materials such as quartz, wollastonite, fluorite, soda ash and others. The effects of mineral raw materials on mold flux properties and flux film structures were investigated through the measurement of melting point, viscosity, crystallization temperature, critical cooling rate, crystallization ratio and crystalline phase content. The results indicated that with increasing the quartz addition (16 to 24 mass%) and the wollastonite addition (11 to 19 mass%) in mineral raw materials, the melting point, viscosity and wollastonite content of flux film increased, while the crystallization temperature, critical cooling rate, crystallization ratio and cuspidine content of flux film decreased. The melting point, viscosity and wollastonite content of flux film reduced with increasing the fluorite addition (8 to 16 mass%) and soda ash addition (10 to 18 mass%) in mineral raw materials. Furthermore, compared with soda ash, the fluorite predominantly enhanced the crystallization temperature, critical cooling rate, crystallization ratio, cuspidine content of flux film. In addition, it was showed that the heat transfer performance and the slab quality might be primarily attribute to the crystallization ratio and cuspidine content of flux film. These results provided a theoretical foundation for optimizing the mold flux of the peritectic steel and were vital to improving the slab quality.

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Section: Introductionmentioning

confidence: 99%

Effects of Mineral Raw Materials on Melting and Crystalline Properties of Mold Flux and Mineralogical Structures of Flux Film for Casting Peritectic Steel Slab

et al. 2023

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Review of Testing Methods on the Heat Transfer Characteristics of Mold Slag Film

Yan,

Li,

Zhu

et al. 2023

steel research int.

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Heat transfer from the solidified shell to the mold, especially in the meniscus region, significantly affects the surface quality of the strand and the stability of the continuous casting process. The mold slag film serves as the sole heat transfer medium between the shell and the mold, and its performance and structure have a substantial impact on the heat transfer efficiency. Thus, since the 1980s, various testing methods are developed to investigate the heat transfer performance of the slag film, including the pouring method, immersion method, parallel plate method, and mold experiment. In this article, the principles, characteristics, and main study results of these methods are reviewed, and the existing issues are highlighted in these methods. Furthermore, specific requirements that shall be satisfied in future research on the heat transfer of slag film are presented. The new approach for testing heat transfer in slag film necessitates ensuring consistency in the heat flux, surface temperature of the shell, interfacial thermal resistance, and thickness and cooling rate of the slag film, aligning with those observed in a mold. This consistency is crucial to ensure the comparable structure and heat transfer characteristic between the experimental and industrial slag films.

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Effect of BaO/Al2O3 ratio and Li2O content on viscosity and crystallization of BaO–Al2O3–TiO2-based mold slags

Cui,

Wei,

Zhang

et al. 2024

Ceramics International

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Influence of Al<sub>2</sub>O<sub>3</sub>/SiO<sub>2</sub> and BaO/Al<sub>2</sub>O<sub>3</sub> Ratios on Rheological and Crystallization Behavior of CaO–BaO–Al<sub>2</sub>O<sub>3</sub>-Based Mold Slags

Abstract: Fig. 10. The effective crystallization activation energy EX at different crystallization fractions of mold slags (a) AS1-AS5, and (b) BA1-BA5.

Cited by 5 publications

References 44 publications

Effects of Mineral Raw Materials on Melting and Crystalline Properties of Mold Flux and Mineralogical Structures of Flux Film for Casting Peritectic Steel Slab

Effects of Mineral Raw Materials on Melting and Crystalline Properties of Mold Flux and Mineralogical Structures of Flux Film for Casting Peritectic Steel Slab

Review of Testing Methods on the Heat Transfer Characteristics of Mold Slag Film

Effect of BaO/Al2O3 ratio and Li2O content on viscosity and crystallization of BaO–Al2O3–TiO2-based mold slags

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