Crystallization characteristics prediction of coal slags based on SiO 2 –Al 2 O 3 –CaO–Fe 2 O 3 –MgO components

Crystallization inside the liquid slag can increase the viscosity, affecting flow down the wall which is associated with the temperature of critical viscosity (Tcv). Four groups of synthetic slags with different Si/Al, Si + Al, CaO, Fe2O3 ratios were sorted to study the crystallization characteristics including the crystallization tendency as well as crystallization temperature (Tcrys). Samples with base–acid ratio (R > 0.7) and Si/Al in the...