CERAMIC BALL, CERAMIC BALL GROUP AND THEIR USING METHODS

PROBLEM TO BE SOLVED: To provide a ceramic ball and a ceramic ball group which do not damage a ladle, are easily maintained, and prevent heat radiation from the surface of a molten metal as well as the formation of an oxide film on the surface of the molten metal, and their using methods. SOLUTION:...

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Bibliographische Detailangaben
Hauptverfasser:	KITAMURA RYOSUKE, SUGIURA SADANOBU
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS POWDER METALLURGY REFRACTORIES SLAG TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a ceramic ball and a ceramic ball group which do not damage a ladle, are easily maintained, and prevent heat radiation from the surface of a molten metal as well as the formation of an oxide film on the surface of the molten metal, and their using methods. SOLUTION: The ceramic ball 1 is composed of heat-resistant ceramics and floats on a molten metal 2. The ceramic ball group 1 consists of a plurality of ceramic balls 1. The ceramic ball group 1 preferably contains at least 2 kinds of ceramic balls, viz. a kind of ceramic ball and the other kind of ceramic ball which has a bulk specific gravity higher than that of the former ceramic ball. The ceramic ball group is used by floating each ceramic ball composing the ceramic ball group on a molten metal 2 held in a holding furnace 3. Each ceramic ball has a shape which prevents the ball from being taken into the inside of ladle 4. COPYRIGHT: (C)2006,JPO&NCIPI