Abstract
This present paper focuses on the viscosities of high titanium containing slags in the process of titanomagnetite smelting by taking the TiO2-Al2O3-CaO-SiO2 quaternary system as the object. Experimental determinations of the viscosities were carried out in the temperature range from 1573 to 1773K using the rotation cylinder method. The measurements were conducted in the composition range from 23 to 33 mass pct TiO2, 3 to 9 mass pct Al2O3, and 0.3 to 0.7 basicity (mass ratio of CaO to SiO2). The effects of TiO2, Al2O3, basicity, and temperature on viscosity were studied. The experimental results indicated that the viscosities decreased with increasing TiO2 content and basicity, and increased with increasing Al2O3 content, above the liquidus temperature. Based on the experimental data, the liquidus temperatures of the slags were evaluated using the second derivatives of the activation energies for viscous flow with respect to temperature.
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