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A fused cast refractory consists of at least 80% by weight of MgO + CaO + BaO + SrO, the amount of MgO being at least 50% and the total of CaO + BaO + SrO being less than 35%, and 0.05-20% of fluorine wherein when the MgO content is 50-80% the refractory may also contain 0-6% Al2O3, 0-4% SiO2, 0-8%...

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Bibliographische Detailangaben
Hauptverfasser:	MCNALLY ROBERT NICHOLAS, ALPER ALLEN MYRON
Format:	Patent
Sprache:	ger
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL REFRACTORIES SLAG TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A fused cast refractory consists of at least 80% by weight of MgO + CaO + BaO + SrO, the amount of MgO being at least 50% and the total of CaO + BaO + SrO being less than 35%, and 0.05-20% of fluorine wherein when the MgO content is 50-80% the refractory may also contain 0-6% Al2O3, 0-4% SiO2, 0-8% TiO2, 0-10% ZrO2, the total of these oxides being 0-10%, and 0-10% of FeO and when the MgO content is at least 80% the total of CuO + BaO + SrO is less than 19% and the refractory may also contain 0-10% Al2O3, 0-18% Cr2O3, 0-8% SiO2, 0-12% TiO2, 0-15% ZrO2 and 0-10% of FeO. The fluorine may be added as calcium or magnesium fluoride. Fusion temperatures of 2000-2800 DEG C. are specified. Specifications 265,847 and 950,393 are referred to.