Ceramics-Silikáty 20, (1) 14 - 22 (1976) |
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THE EFFECT OF TiO₂ ON PHASE TRANSFORMATIONS OF PERICLASE-SPINELLITIC SYSTEMS IN THE PRESENCE OF SILICATES
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Pánek Zdeněk 1, Kanclíř Edmund 1, Staroň Jozef 2,
Kozlovský Milan 2,
Palčo Štefan 2
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1 Institute of Inorganic Chemistry Slovak Academy of Sciences, 809 34 Bratislava, Dúbravská cesta 5
2 Research Institute of Metallurgical Ceramics, 898 11 Bratislava, Februárového víťazstva 136
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The formation of a liquid phase in the course of manufacture of magnesite-chromite refractories or their use is taken part in above all by silicates dicalcium ferrite and in the presence of TiO₂, also perovskite. The steady-state phase diagrams of the systems CaTiO₃-Ca₃MgSi₂O₈, CaTiO₃-Ca₂SiO₄, CaTiO₃-Mg₃SiO₄, CaTiO₃-Ca₂Fe₂O₅ and Mg₂TiO₄-Mg₂SiO₄ were determined experimentally. The most suitable phase combination with respect to the formation temperature and the amount of liquid phase was found to be CaTiO₃-Mg₂SiO₄ in the case of molar ratios CaO : SiO₂ < 2. At molar ratios CaO : SiO₂ > 2 the phase combination Ca₂SiO₄-CaTiO₃ is more suitable. |
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