Conclusions
During the firing of specimens prepared from fused periclase containing additions of Cr2O3 and TiO2, magnochromite is formed together with perovskite and silicates — montichellite and forsterite. The solid solution of spinel formed in these specimens is decomposed during firing into magnochromite and titanium orthotitanate which reacts with montichellite to form perovskite and forsterite.
With an increase in the concentration of perovskite to 4% the basic properties are improved; with further increase in the amount to 8% the thermal-shock resistance does not alter, the slag resistance is somewhat reduced, while the strength rises.
With increase in the content of magnochromite in specimens to 10–12% all these properties are improved while subsequently the strength and slag resistance are reduced, and the thermal-shock resistance is increased.
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S. T. Sennikov, G. E. Revzin, and M. V. Chistyakova, in: Collection of Summaries of Papers from the All-Union Conference: Actual Structure of Inorganic and Heat-Resistant Materials [in Russian], Sverdlovsk, UNIkhim (1979) pp. 143–144.
G. V. Kukolev and I. I. Nemets, Ogenupory, No. 8, 23–30 (1965).
K. K. Strelov, Structure and Properties of Refractories [in Russian], Metallurgiya, Moscow (1962).
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Translated from Ogneupory, No. 10, pp. 10–13, October, 1984.
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Gudilina, A.I., Pitak, N.V. & Kushchenko, A.V. Certain properties of MgO-Cr2O3-TiO2 compositions. Refractories 25, 559–562 (1984). https://doi.org/10.1007/BF01397842
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DOI: https://doi.org/10.1007/BF01397842