FORMED FIRED REFRACTORY MATERIAL HAVING A HIGH LEVEL OF SPECTRAL EMISSION METHOD FOR PRODUCTION THEREOF AND METHOD FOR INCREASING THE LEVEL OF SPECTRAL EMISSION OF REFRACTORY SHAPED BODIES

摘要

2The invention relates to a fired refractory shaped body especially for glass melting tanks comprising as main components SiO SiC and a binder or binder mixture wherein the material has a high level of spectral emission wherein a substance distributed within the matrix has a spectral emission capacity higher than that of the matrix within the spectral range from 1 µm to 5 µm and at temperatures above 1000°C wherein the substance contains silicon carbide and the content of silicon carbide in the material is 0.2% by weight to 20% by weight preferably 0.3% by weight to 15% by weight and wherein the material has a silicon dioxide content of at least 78% by weight and not more than 6% by weight of other materials where the sum total is 100% by weight. The invention further relates to a method for producing a refractory shaped body and to a method for increasing the level of spectral emission of refractory shaped bodies.