Conclusions
Bloating additives, including magnesium and sodium sulfates, are a high-temperature source of the gaseous phase. Fireclays and kaolins with such additives possess the capacity to evolve gaseous phase at temperatures of densification and above.
The rise in the heating rate causes an increase in the rate of gas evolution from clay bodies with pore-forming additions in the periods both of temperature rise and soaking.
The incorporation of orthophosphoric acid contributes to a reduction in the weight loss of clay materials containing sulfates. In this case its effect is detected at temperatures exceeding the firing temperature of clay materials.
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Literature cited
S. I. Shcheglov et al., Ogneupory, No. 7, 54–58 (1976).
S. I. Shcheglov et al., Ogneupory, No. 9, 3–7 (1976).
S. P. Onatskii, Production of Keramzit [in Russian], Stroiizdat, Moscow (1971).
B. P. Nikol'skii (ed.), Chemist's Handbook [in Russian], Vol. II, Khimizdat (1964).
M. A. Matveev et al., Calculations for the Chemistry and Technology of Glass [in Russian], Stroiizdat, Moscow (1972).
D. I. Gavrish (ed.), Refractories Production (Handbook) [in Russian], Vol. 1, Metallurgiya, Moscow (1965).
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Translated from Ogneupory, No. 4, pp. 48–52, April, 1982.
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Shubin, V.I., Kozdoba, V.I. & Pilipchatin, L.D. Separation of the gaseous phase from fireclays and kaolins containing additions of some metal sulfates. Refractories 23, 196–200 (1982). https://doi.org/10.1007/BF01401015
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DOI: https://doi.org/10.1007/BF01401015