DENSITY OF CaO-5%MgO-Al2O3-SiO2 SLAG WITH LOW SILICA

The densities of the selected quaternary CaO-5%MgO-Al2O3-SiO2 slag with low silica were measured by the Archimedean method in a wide temperature range from 1723K to 1823K. Slag compositions were chosen based on five different levels of SiO2 content between 0.00 pct and 11.40 pct. The MgO content was equaled to 5.00 pct. The mass ratio of CaO/Al2O3 was varied from 0.67 to 2.14. The effects of temperature, CaO/Al2O3 ratio and optical basicity were studied. It is shown that density decrease approximately linearly with an increase in temperature. With the same SiO2 content, the density decreases with increasing of CaO/Al2O3 ratio and optical basicity. Based on the experimental data as the boundary of the homogenous phase region predicated by FACTSAGE software, the mass triangle model is used to calculate the density of selected limited homogenous phase region. The results showed that the mass triangle model is working well.