Conclusions
The use of cp starting materials (concentrated raw materials or well-brine magnesia) combined with high-temperature firing gives periclase-spinel refractories with a high-density structure, a highly developed intergranular bond, and improved physicoceramic properties. The refractoriness under a load of 2 kg/cm2 of these refractories is 140°C higher, i.e., 1720 as against 1580°C.
Periclase-spinel refractories with a dense structure and predominantly direct intergranular bonds are impregnated to a lesser degree with the molten products in the tuyere zone of the converters used in copper smelting. The result is that the periclase and chrome-spinel are converted to low-melting compounds at a slower rate so that the erosion rate of these refractories is lower.
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S. M. Zubakov, A. L. Dyukov, G. V. Kononenko, et al., Transactions of the Institute of Metallurgy and Beneficiation of the Academy of Sciences of the Kazakh SSR [in Russian],Vol. 38, Nauka, Alma-Ata (1970), pp. 22–43.
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Translated from Ogneupory, No. 4, pp. 33–39, April, 1975.
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Zubakov, S.M., Sattarova, A.S., Dyukov, A.L. et al. Periclase — Spinel refractories from raw materials of varied purity. Refractories 16, 226–231 (1975). https://doi.org/10.1007/BF01661236
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DOI: https://doi.org/10.1007/BF01661236