Effect of Na2O addition on crystallization behavior and properties of 25 wt%Al2O3–SiO2–CaO non-metallic inclusion-type oxides

Li, Zhengtao; Yang, Wen; Yao, Hao; Zhang, Lifeng

doi:10.1016/j.ceramint.2022.05.042

Ceramics International

2022

DOI: 10.1016/j.ceramint.2022.05.042

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Effect of Na2O addition on crystallization behavior and properties of 25 wt%Al2O3–SiO2–CaO non-metallic inclusion-type oxides

Zhengtao Li

Wen Yang

Hao Yao

et al.

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Cited by 3 publications

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Crystallization Behavior of the CaO–SiO₂–Al₂O₃–MgO System Inclusions

Wang,

Sukenaga,

Tashiro

et al. 2024

steel research int.

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The crystallization process of low melting point CaO–SiO2–Al2O3–MgO system inclusions during the continuous casting and hot rolling process greatly affects the deformability of inclusions. The effect of Al2O3 and MgO contents on the crystallization characteristics of CaO–SiO2–Al2O3–MgO system melts representing the typical oxide inclusions in Si–Mn deoxidized steels is systematically investigated. The continuous cooling transformation and time–temperature transformation experiments are carried out. The results reveal that the increase of Al2O3 contents restrains the crystallization process of the melt, whereas the crystallization tendency of the melt is promoted with the increase of MgO contents. The precipitated phases are predominately 2CaO·MgO·2SiO2 and 3CaO·MgO·2SiO2, and the primary crystalline phase is unaffected by the changes of Al2O3 and MgO contents. To obtain low melting point plasticized inclusions with limited crystallization ability, it is recommended to control the Al2O3 and MgO contents greater than 15 wt% and below 5 wt%, respectively. The isothermal treatment is suggested to be controlled within a proper temperature range (1175–1250 °C) to decrease the crystallization kinetics. The oxide system's viscosity change is the limiting kinetic factor in the crystallization process, and it can be utilized to predict the system's crystallization tendency.

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Crystallization Behavior of the CaO–SiO₂–Al₂O₃–MgO System Inclusions

Wang,

Sukenaga,

Tashiro

et al. 2024

steel research int.

View full text Add to dashboard Cite

show abstract

Synthesis of hydraulic waste-derived belite-rich calcium sulfoaluminate clinker: Feedstock design, component calculation, and clinkering optimization

Lyu,

Zhang,

Poon

2024

Cement and Concrete Composites

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Effects of CaO addition on the CuW composite containing micro- and nano-sized tungsten particles synthesized via aluminothermic coupling with silicothermic reduction

Cheng

Wang

Song

et al. 2023

Nanotechnology Reviews

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CuW composite fabricated by powder metallurgy using ultrafine metal powders as raw materials has the disadvantages such as uneven microstructure and low compactness. A novel method of synthesizing an as-cast CuW composite ingot via an aluminothermic coupling with silicothermic reduction is presented; a low-melting-point CaO–Al2O3–SiO2 slag is formed by adding CaO as a slag former, effectively reducing Al2O3 inclusion in the CuW composite. In this study, the effects of CaO addition on the novel synthesis of the CuW composite via the aluminothermic coupling with silicothermic reduction are investigated. The result shows that CaO affects the removal of large particles (≥6 µm) but not the removal of small particles (≤4 µm). With the increase in the ratio of CaO ranging from 0 to 1.0, the inclusions in the CuW composites gradually transform from Al2O3 to calcium aluminates, which are conducive to the separation of the metal and slag. The contents of Si and O in the CuW composites gradually decrease from 9.40 and 14.00% to 6.10 and 3.50%, respectively, while those of Al and Ca gradually increase from 2.54 and 0.02% to 3.83 and 0.26%, respectively.

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Effect of Na2O addition on crystallization behavior and properties of 25 wt%Al2O3–SiO2–CaO non-metallic inclusion-type oxides

Cited by 3 publications

References 39 publications

Crystallization Behavior of the CaO–SiO₂–Al₂O₃–MgO System Inclusions

Crystallization Behavior of the CaO–SiO₂–Al₂O₃–MgO System Inclusions

Synthesis of hydraulic waste-derived belite-rich calcium sulfoaluminate clinker: Feedstock design, component calculation, and clinkering optimization

Effects of CaO addition on the CuW composite containing micro- and nano-sized tungsten particles synthesized via aluminothermic coupling with silicothermic reduction

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About

Effect of Na2O addition on crystallization behavior and properties of 25 wt%Al2O3–SiO2–CaO non-metallic inclusion-type oxides

Cited by 3 publications

References 39 publications

Crystallization Behavior of the CaO–SiO2–Al2O3–MgO System Inclusions

Crystallization Behavior of the CaO–SiO2–Al2O3–MgO System Inclusions

Synthesis of hydraulic waste-derived belite-rich calcium sulfoaluminate clinker: Feedstock design, component calculation, and clinkering optimization

Effects of CaO addition on the CuW composite containing micro- and nano-sized tungsten particles synthesized via aluminothermic coupling with silicothermic reduction

Contact Info

Product

Resources

About

Crystallization Behavior of the CaO–SiO₂–Al₂O₃–MgO System Inclusions

Crystallization Behavior of the CaO–SiO₂–Al₂O₃–MgO System Inclusions