Physical chemistry and technology of mullite-corundum refractories for casting special steels

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 af...

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Bibliographic Details
Published in:Canadian metallurgical quarterly 2023-10, Vol.ahead-of-print (ahead-of-print), p.1-16
Main Authors: Pruttskov, Dmitry, Sokol'skii, Vladimir, Kirichenko, Aleksey, Prokhorenko, Illia, Sokolsky, Georgiy, Roik, Oleksandr
Format: Article
Language:English
Subjects:
binder
glass
high-silica melts
mineralisers
Mullite
sintering
synthesis
technology
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Summary: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 TiO 2 mineralisers; structural properties of invariant compositions of melts of the CaO-Al 2 O 3 -SiO 2 -TiO 2 system; physicochemical model of mullite synthesis in the presence of high-silica melt and the kinetics of this transformation; improvement of refractory production technology.
ISSN:0008-4433
1879-1395
DOI:10.1080/00084433.2022.2126583