Material for forming surfaces in contact with glass melts comprises an outer layer having fine silica glass particles, and an inner layer joined to the outer layer and having coarse silica glass particles

摘要

Material for forming surfaces in contact with glass melts comprises: an outer layer having fine silica glass particles with a grain size of less than 50 microns; and an inner layer joined to the outer layer and having coarse silica glass particles of 1-20 mm.