Abstract
The viscosity of CaO-SiO2-Al2O3-MgO-Na2O-CaF2-(TiO2) was measured by the rotating column method, and the viscosity, break temperature and viscous flow activation energy of the slag were analyzed based on the results. The effect of TiO2 content on the structure of the slag was studied by Raman spectroscopy. The results show that with the increase of TiO2 content in CaO-SiO2-Al2O3-based mold flux, the viscosity of mold flux increases, the break temperature increases from 1418 K to 1535 K, and the viscous flow activation energy changes little. At high temperature, TiO2 can depolymerize the [Si-O] and enter into the network structure as [Ti-O], which increases the frictional resistance to the viscous flow of the mold flux. At the same time, the crystallization temperature and viscosity of the slag is increased.
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