Table 1.
Designed composition of fluorine-containing mold flux.
Table 2.
Components of mold fluxes for continuous casting, wt %.
Fig 1.
Linear analysis of lnη to 1/T.
Table 3.
Viscosity controlling parameters.
Fig 2.
Viscosity parameter fitting value.
(a) lnA; (b) B.
Fig 3.
Estimated and measured viscosity of fluorine-containing mold flux.
(a) Riboud model; (b) Iida model; (c) Mills model; (d) studied model. (the Δ in the figures above represents the deviation rate between the estimated viscosity and the measured viscosity, and the calculation formula (5) is shown below).
Fig 4.
Estimated and measured viscosity of CaF2- CaO- SiO2 slag.
(a) Mills model; (b) studied model.
Fig 5.
Effect of CaF2, Na2O and Al2O3 on the viscosity of mold flux at 1773 K.
Fig 6.
CaF2-Na2O-Al2O3-CaO-SiO2-MgO isoviscosity diagram (R = 0.9, MgO(wt%) = 6.5, 1773 K).
Table 4.
Components of mold fluxes after viscosity tests, wt %.
Fig 7.
Modified isoviscosity diagram (R = 0.9, MgO(wt%) = 6.5, 1773 K).