Viscosity and Melting Property of Low Titanium-containing Blast Furnace Slag

RTW-10 integrated instrument for measurement of melt properties was used to measure the variation of viscosity of CaO-SiO2-MgO-Al2O3-TiO2 slag system with temperature, its melting temperature calculated, and the high-temperature metallurgical properties of the slag were studied. The results showed that when TiO2 content in the slag increased from 1.0% to 2.2%, both the melting temperature and viscosity decreased. With increasing of the Al2O3 content, the melting temperature and viscosity of the slag increased, but in high temperature range, the slag viscosity was less than 0.7 Pa·s, it still had good fluidity. When the MgO content increased from 8.5% to 10.5%, the slag melting temperature decreased, but the slag viscosity slightly changed. For industrial production with lower TiO2 content blast furnace slag, increasing the use of titanium-containing raw material could provide the protection of furnace operation.