A new approach to the viscosity analysis of high-alumina, low-calcium melts of the CaO – Al2O3 – FeO – Fe2O3 – SiO2 system is used. A mathematical formalism for handling experimental viscosity data on the CaO – FeO – Fe2O3 – SiO2 system is proposed that allows viscosity of the system to be evaluated within Δηav = 0.004 Pa · sec in the temperature range of 1500 – 1700°C at concentrations (mol.%) of CaO = 15.3 – 50.3, FexOy = 2.3 – 38.5, and SiO2 = 17.7 – 57.7. An equation describing viscosity as a function of temperature is derived. Using this equation, the viscosity of model melts compositionally analogous to the products of interaction between molten slag and the glassy matrix phase of castables employed in thermal power units of ferrous metallurgy is considered.
Refractories and Industrial Ceramics – Springer Journals
Published: Oct 13, 2004
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