MAGNESIA-CHROME REFRACTORY

PROBLEM TO BE SOLVED: To improve the slag infiltration resistance of magnesiachrome refractories used for lining a vacuum degassing furnace and the structural spalling resistance of the refractories attendant on the slag infiltration resistance without deteriorating the thermal spalling resistance....

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Bibliographische Detailangaben
Hauptverfasser:	TAMAKI TAKEYUKI, SHIMIZU KOICHI
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 improve the slag infiltration resistance of magnesiachrome refractories used for lining a vacuum degassing furnace and the structural spalling resistance of the refractories attendant on the slag infiltration resistance without deteriorating the thermal spalling resistance. SOLUTION: In order to obtain the objective magnesia-chrome refractories contg. 55-75 wt.% MgO component and 10-30 wt.% Cr2 O3 component, a magnesia clinker of >=98.5% purity is used as grains of 5-1 mm grain diameter, a magnesia clinker and/or a magnesia-chrome clinker is used as grains of 1-0.074 mm grain diameter and chrome ore grains optionally contg. a magnesiachrome clinker in part of the chrome ore are used as grains of