Abstract
ABSTRACT The article summarises the research on the theoretical foundations of the mullite-corundum refractories technology used in casting special steels by the siphon method. The resistance of these refractories to metal jet casting is achieved with a minimum content of residual silica glass in the bond after firing. To search for the factors providing this condition of work, we focused on the following areas: synthesis and sintering of mullite in the presence of CaO and TiO2 mineralisers; structural properties of invariant compositions of melts of the CaO–Al2O3–SiO2–TiO2 system; physicochemical model of mullite synthesis in the presence of high-silica melt and the kinetics of this transformation; improvement of refractory production technology.
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