The Effect of Calcium Fluoride on Slag Viscosity

• DOI: 10.1007/s11663-011-9546-x
• Publication Date: 2011-07-05T15:16:51Z
• Authors: Liushun Wu; Jimmy Gran; Du Sichen
• Keywords: Liquidus; Slag (welding); Ladle

The effect of CaF2 on the viscosity of high-basicity Al2O3-CaO-MgO-SiO2 (-CaF2) slags for secondary steelmaking was studied using a Brookfield digital viscometer. The addition of approximately 3 mass pct CaF2 could decrease the liquidus temperature substantially in the case of high CaO containing slags, leading to good flowability of the slag at the temperature of the ladle treatment. The addition of CaF2 had the strongest effect on the viscosity of liquid slag with high SiO2 content.