Dissolution of TiO2 and TiN inclusions in CaO–SiO2–B2O3-based fluorine-free mold flux

Cai, Dawei; Zhang, Li; Wang, Wanlin; Zhang, Lei; Sohn, Il

doi:10.1007/s12613-023-2622-9

Cited by 6 publications

References 45 publications

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Investigation of the Dissolution Behavior of AlN in CaO–Al₂O₃–MgO Refining Slag and CaO–Al₂O₃–F–Li₂O–BaO Mold Flux

Wang,

Xue,

Song

2024

steel research int.

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Low‐density steels have garnered widespread attention as novel lightweight materials. Owing to its high Mn and Al content, brittle AlN inclusions, detrimental to both steelmaking and steel properties, can precipitate directly from the molten steel. Employing slag absorption effectively removes these floating AlN inclusions from the molten steel. Herein, a series of analytical methods are utilized to investigate the dissolution behavior of AlN in CaO–Al2O3–MgO refining slag and CaO–Al2O3–F–Li2O–BaO mold flux. The results indicate that the initial dissolution temperatures of AlN in the slag and mold flux are 1361 and 1080 °C, respectively. The dissolution in the refining slag is attributed to the high‐temperature self‐decomposition of AlN, producing N2(g). In the mold flux, the dissolution reaction involves both the high‐temperature self‐decomposition of AlN and its reaction with Li2O in mold flux, generating N2(g) and Li(g). No reaction interface is observed at the AlN‐slag/mold flux boundary. As the dissolution mass of AlN in the slag/mold flux increases, the Al2O3 content in the slag/mold flux rises. The main phases in slag transition from Ca9(Al6O18) to Ca12Al14O33 and Ca3Al2O6. In the mold flux, the LiBaF3 phase disappears, and the 11CaO·7Al2O3·CaF2 phase, which can degrade the flux's physicochemical properties, becomes the dominant phase.

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Investigation of the Dissolution Behavior of AlN in CaO–Al₂O₃–MgO Refining Slag and CaO–Al₂O₃–F–Li₂O–BaO Mold Flux

Wang,

Xue,

Song

2024

steel research int.

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In Situ Method to Study the Dissolution of Ti(C,N) Inclusion in Molten Mold Flux

Zhang,

Wang,

Zhang

et al. 2024

The Minerals, Metals &Amp; Materials Series

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Wetting and Reaction Behavior of TiN and TiO2 with Different Mold Fluxes for High Ti-Bearing Stainless Steel

Chen,

Yu,

Yao

et al. 2024

Metall Mater Trans B

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Dissolution of TiO2 and TiN inclusions in CaO–SiO2–B2O3-based fluorine-free mold flux

Cited by 6 publications

References 45 publications

Investigation of the Dissolution Behavior of AlN in CaO–Al₂O₃–MgO Refining Slag and CaO–Al₂O₃–F–Li₂O–BaO Mold Flux

Investigation of the Dissolution Behavior of AlN in CaO–Al₂O₃–MgO Refining Slag and CaO–Al₂O₃–F–Li₂O–BaO Mold Flux

In Situ Method to Study the Dissolution of Ti(C,N) Inclusion in Molten Mold Flux

Wetting and Reaction Behavior of TiN and TiO2 with Different Mold Fluxes for High Ti-Bearing Stainless Steel

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Dissolution of TiO2 and TiN inclusions in CaO–SiO2–B2O3-based fluorine-free mold flux

Cited by 6 publications

References 45 publications

Investigation of the Dissolution Behavior of AlN in CaO–Al2O3–MgO Refining Slag and CaO–Al2O3–F–Li2O–BaO Mold Flux

Investigation of the Dissolution Behavior of AlN in CaO–Al2O3–MgO Refining Slag and CaO–Al2O3–F–Li2O–BaO Mold Flux

In Situ Method to Study the Dissolution of Ti(C,N) Inclusion in Molten Mold Flux

Wetting and Reaction Behavior of TiN and TiO2 with Different Mold Fluxes for High Ti-Bearing Stainless Steel

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Investigation of the Dissolution Behavior of AlN in CaO–Al₂O₃–MgO Refining Slag and CaO–Al₂O₃–F–Li₂O–BaO Mold Flux

Investigation of the Dissolution Behavior of AlN in CaO–Al₂O₃–MgO Refining Slag and CaO–Al₂O₃–F–Li₂O–BaO Mold Flux