CASTABLE REFRACTORY FOR IMMERSION LANCE

PROBLEM TO BE SOLVED: To suppress oversintering of a structure, to improve a spalling resistance and to remarkably improve a service life of an immersion lance by blending CaO, fumed silica and alumina superfine powder to an Al2 O3 -SiO2 material low cement castable using an alumina cement as a bind...

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Bibliographische Detailangaben
Hauptverfasser:	WASHIO HARUSHICHI, UEMOTO HIDEO, KATO MASATAKA, KUROKI TOMOHITO
Format:	Patent
Sprache:	eng
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:	PROBLEM TO BE SOLVED: To suppress oversintering of a structure, to improve a spalling resistance and to remarkably improve a service life of an immersion lance by blending CaO, fumed silica and alumina superfine powder to an Al2 O3 -SiO2 material low cement castable using an alumina cement as a binding agent. SOLUTION: A low cement castable is composed of 60wt.% Al2 O3 and 40wt.% SiO2 . 0.4-0.8wt.% CaO,