EXPERIMENTAL STUDIES OF THE VISCOSITIES IN THE CAO-FENO-SIO2 SLAGS

In the present work, the viscosities in the CaO-FenO-SiO2 ternary syst em have been measured by the rotating cylinder method involving a spin dle and crucible made of iron. Nine slag compositions in the ternary s ystem have been chosen with CaO varying between 5.5 and 45.5 pet mass, FeO between 10.0 and 70.0 pet mass, and one measurement each in the b inary FenO-SiO2 and CaO-SiO2 melts. The measurements have been carried out in the temperature range of 1423 to 1753 K. The viscosity in this system is described as a function of temperature and composition usin g the model approach developed earlier at the present laboratory. The isoviscosity lines have been predicated at 1573, 1673, and 1723 K. Goo d agreement between the calculated results and the experimental data h as been obtained.