Abstract
The viscosity of slags with different contents of BaO and MnO was measured by the rotating cylinder method. The high-temperature melting characteristics of the slag were studied by TG-DSC, and the change of melting enthalpy and melting temperature of the slag was also detected. The structural properties of the slag were characterized using Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy (Raman). The results show that in the range of 0-3wt%, the melting enthalpy of slag increases with the increase of BaO content and the melting temperature of slag has a slight tendency to decrease. With the increase of MnO content, the slag melting enthalpy and melting temperature decreased significantly. FT-IR and Raman results show that with the increase of BaO concentration, led to the polymerization of [AlO4]− and [SiO4]− tetrahedral units. MnO depolymerizes the structure of slag by breaking the bond between silicate and aluminate, which may lead to the decrease of slag viscosity. However, the influence of MnO on the aluminate structure is minor.
Published Version
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