Influence of Al2O3/SiO2 Ratio on Viscosities of CaO–Al2O3–SiO2 Melt
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概要
- 論文の詳細を見る
The influence of Al2O3/SiO2 ratio on viscosity of CaO–Al2O3–SiO2 melt was investigated by the rotating cylinder method in this study. Three groups of compositions with different CaO contents of 0.35, 0.4 and 0.45 were studied. From the experimental results, it was concluded that viscosity always first increases and then decreases as gradually increasing Al2O3/SiO2 ratio. The appearance of viscosity maximum may be resulted from the opposite variation tendencies of mean bond strength and the degree of polymerization of melt with Al2O3/SiO2 ratio. When substituting SiO2 by Al2O3, the mean bond strength decreases because of the weak Al–O bond relative to Si–O bond, which decreases viscosity; while the degree of polymerization is enhanced by the charge compensation effect of Al3+ ion, which increases viscosity. Our new proposed viscosity model can well describe the viscosity variation of CaO–Al2O3–SiO2 melt.
- The Iron and Steel Institute of Japanの論文
著者
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Chou Kuo-chih
State Key Laboratory Of Advanced Metallurgy University Of Science And Technology Beijing
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Zhang Guo-hua
State Key Laboratory Of Advanced Metallurgy University Of Science And Technology Beijing
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CHOU Kuo-Chih
State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing
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