FUELLMATERIAL ZUM FUELLEN EINER ABFLUSSOEFFNUNG EINER GIESSPFANNE ODER EINES AEHNLICHEN BEHAELTERS UND VERFAHREN ZUR HERSTELLUNG DIESES FUELLMATERIALS

摘要

A filler material for filling an outlet aperture of a casting ladle or similar container, comprising a particulate core principally composed of quartz and a coating layer which covers a surface of the core, the coating layer having a multiplicity of fine particles principally made of at least one material selected from materials of feldspar group can be surely taken off from the outlet aperture of a casting ladle or other similar container to allow substantially complete opening of the aperture when the slide gate is opened.