Conclusions
In preparing kyanite-sillimanite concentrate for firing in rotary kilns it should be finely ground, and 20% kaolin should be added.
The addition of surface-active substances accelerates the process of grinding the concentrate. The use of sulfite lye and a combined addition (0.25% sulfite lye and 0.15% Na2O) during processing of the body increases the output of the press and extends the range of optimal moisture content.
For firing in a rotary kiln it is desirable to use pellets dried to 2% residual moisture content. This yields coarse-grained chamotte.
From the pellets prepared from 100% kyanite—sillimanite concentrate by semidry pressing on a hydraulic press, using plastic pressing (with an addition of kaolin) on a pugmill with a vacuum and without it, and also on press rollers after firing in a rotary kiln at 1630–1680°C it is possible to obtain chamotte with a water absorption of less than 3%.
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Literature cited
S. K. Dubrovo, Chemistry and Practical Use of Silicates [in Russian], TsBTI, Leningrad (1960), pp. 50–56.
S. A. Zhikharevich et al., Ogneupory, No. 12, 40–46 (1968).
G. V. Kukolev et al., Ogneupory, No. 8, 1–4 (1968).
G. V. Kukolev et al., Ogneupory, No. 12, 3–4 (1968).
G. V. Kukolev et al., Bull. Tech. Info. VNIIO, No. 1, 28–36 (1956).
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Translated from Ogneupory, No. 1, pp. 39–44, November, 1972.
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Kochetova, A.P., Zelenskaya, A.T. & Pitak, N.V. Chamotte based on kyanite-sillimanite concentrate. Refractories 13, 726–731 (1972). https://doi.org/10.1007/BF01284117
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DOI: https://doi.org/10.1007/BF01284117