Rheological properties of Al2O3–CaO–SiO2 slags
نویسندگان
چکیده
The Al2O3–CaO–SiO2 ternary is a basic oxide system relevant for the Pedersen alumina production process and aluminothermic silicon with low environmental impact using secondary aluminium silica raw materials. Rheological property one of most important properties above applications. A phenomenological viscosity model, inspired by Calphad technique, has been proposed description rheological covering from homogenous liquid to heterogenous partial solidified slags. model developed modification well-known Vogel-Fulcher-Tammann (VFT) formalism. Based on effective diffusivity slag can be evaluated. relationships between cooling temperature rate, incubation time solid precipitates as well transition have then estimated. calculated isothermal time-temperature-transformation (TTT) non-isothermal continuous-cooling-transformation (CCT) curves CaAl2O4 anorthite phases are in good agreement experimental observations.
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ژورنال
عنوان ژورنال: Calphad-computer Coupling of Phase Diagrams and Thermochemistry
سال: 2022
ISSN: ['1873-2984', '0364-5916']
DOI: https://doi.org/10.1016/j.calphad.2022.102421