Influence of TiO<sub>2</sub> on the melting property and viscosity of Cr-containing high-Ti melting slag

Jing Ma; Gui-qin Fu; Wei Li; Miao-yong Zhu

doi:10.1007/s12613-019-1914-6

Volume 27 Issue 3

Mar. 2020

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2020 > 27(3): 310-318

Jing Ma, Gui-qin Fu, Wei Li, and Miao-yong Zhu, Influence of TiO₂ on the melting property and viscosity of Cr-containing high-Ti melting slag, Int. J. Miner. Metall. Mater., 27(2020), No. 3, pp. 310-318. https://doi.org/10.1007/s12613-019-1914-6

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Jing Ma, Gui-qin Fu, Wei Li, and Miao-yong Zhu, Influence of TiO2 on the melting property and viscosity of Cr-containing high-Ti melting slag, Int. J. Miner. Metall. Mater., 27(2020), No. 3, pp. 310-318. https://doi.org/10.1007/s12613-019-1914-6

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Research Article

Influence of TiO₂ on the melting property and viscosity of Cr-containing high-Ti melting slag

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Corresponding author:
Wei Li E-mail: lw_neu@126.com
Received: 7 May 2019; Revised: 12 July 2019; Accepted: 16 July 2019; Available online: 12 December 2019

Abstract

Abstract

A study on the melting and viscosity properties of the chromium-containing high-titanium melting slag (CaO–SiO₂–MgO–Al₂O₃–TiO₂–Cr₂O₃) with TiO₂ contents ranging from 38.63wt% to 42.63wt% was conducted. The melting properties were investigated with a melting-point apparatus, and viscosity was measured using the rotating cylinder method. The FactSage 7.1 software and X-ray diffraction, in combination with scanning electron microscopy–energy-dispersive spectroscopy (SEM–EDS), were used to characterize the phase equilibrium and microstructure of chromium-containing high-titanium melting slags. The results indicated that an increase in the TiO₂ content led to a decrease in the viscosity of the chromium-containing high-titanium melting slag. In addition, the softening temperature, hemispheric temperature, and flowing temperature decreased with increasing TiO₂ content. The amount of crystallized anosovite and sphene phases gradually increased with increasing TiO₂ content, whereas the amount of perovskite phase decreased. SEM observations revealed that the distribution of the anosovite phase was dominantly influenced by TiO₂.
- titanium dioxide;
- Cr-containing high-titanium melting slag;
- melting property;
- viscosity;
- vanadium titanomagnetite

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