Conclusions
A technology was developed for manufacturing heat-insulating refractories with an anorthite composition and an apparent density of 0.3–0.4 g/cm3 or more using kaolin, semihydrated gypsum and stabilized foam. The proposed method guarantees a reduction in the production cycle, yielding cheap insulating brick, and the possibility of mechanizing the production processes.
Anorthite ultralightweight refractories in terms of their basic factors correspond to insulating products made by foreign concerns for service at 1100–1260°C.
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Literature cited
Ceramic Data Book (1965).
Brick and Clay Record, No.5, 48 (1961).
Stahl und Eisen, No. 2, 20 (1958).
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Translated from Ogneupory, No.5, pp. 36–40, May, 1970.
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Pirogov, A.A., Rakina, V.P., Mirak'yan, M.M. et al. Anorthite insulating refractory. Refractories 11, 303–307 (1970). https://doi.org/10.1007/BF01295687
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DOI: https://doi.org/10.1007/BF01295687