TiO2对含铬高钛熔分渣熔化性能和黏度的影响 |
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作者单位: | School of Metallurgy, Northeastern University, Shenyang 110819, China |
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基金项目: | financially supported by the National Natural Science Foundation of China(No.51904066);the Fundamental Research Funds for the Central Universities,China(No.N182503032);the Postdoctoral Foundation of Northeastern University,China(No.20190201);the Postdoctoral International Exchange Program,China(Dispatch Project,20190075) |
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摘 要: | 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.
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关 键 词: | ,,,,,,, |
Influence of TiO2 on the melting property and viscosity of Cr-containing high-Ti melting slag |
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Authors: | Jing Ma Gui-qin Fu Wei Li Miao-yong Zhu |
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Institution: | School of Metallurgy |
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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 38.63 wt% to 42.63 wt% was conducted. The melting properties were investigated with a meltingpoint 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. |
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Keywords: | titanium dioxide Cr-containing high-titanium melting slag melting property viscosity vanadium titanomagnetite |
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