FEUERFESTE KOERPER ODER MASSEN, INSBESONDERE ZUM AUSKLEIDEN VON OEFEN ODER GEFAESSEN FUER GESCHMOLZENE METALLE

摘要

A method of manufacturing refractory bodies or compositions includes forming a starting mixture containing one or more of an aluminosilicate, aluminium oxide, silicon dioxide, zirconium silicate and silicon carbide, Al2O3 and SiO2 and also containing a bonding agent. 0.5 to 40% by weight barium sulphate with respect to the starting mixture, 2 to 20% by weight chromium (III) oxide with respect to the starting mixture and 3 to 25 parts by weight calcium fluoride, with respect to 100 parts by weight of the added barium sulphate, are also added to the mixture. The mixture is fired at 1100 to 1600 DEG C and Celsian is formed during the firing.