The effect of nonisothermal heating temperature in the range 1100 – 1500°C on shrinkage indices and and degree of cristobalitization is studied for quartz steel-pouring refractory specimens with a ceramic concrete structure. Cristobalite formed at elevated temperature has a reduced (150 – 220°C) transition temperature into the low-temperature form. Quartz steel-pouring refractories with a ceramic concrete structure have good thermal shock resistance, and in contrast to corundum-graphite refractories, requiring preliminary high-temperature heating, may operate without the latter (“cold start”).
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1Part 1 of the article was published in Novye Ogneupory No. 7 (2014), and parts 2 – 6 in Nos. 1, 3, 4, 6, and 7 (2015).
Translated from Novye Ogneupory, No. 9, pp. 16 – 24, September 2015.
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Pivinskii, Y.E., Dyakin, P.V. Research in the Area of Preparing Materials Based on Fuzed Quartz HCBS. Part 7. Study of Centrifugally Molded Refractory Sintering and Cristobalitization1 . Refract Ind Ceram 56, 476–482 (2016). https://doi.org/10.1007/s11148-016-9872-2
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DOI: https://doi.org/10.1007/s11148-016-9872-2