| abstract |
Disclosed is a refractory product that exhibits better resistance to slag corrosion while sufficiently withstanding the thermal shock encountered inside a gasifier. % By weight based on the following: greater than 40% chromium oxide Cr 2 O 3 ; less than 50% aluminum oxide Al 2 O 3 ; 1% or more zirconium oxide ZrO 2 , wherein at least 20% by weight of the zirconium oxide Is stabilized in cubic and / or tetragonal form; more than 0.1% yttrium oxide Y 2 O 3 acting as a stabilizer for the zirconium oxide ZrO 2 ; less than 1.9% hafnium oxide HfO comprises 2, chromium oxide, the total content Cr 2 O 3 + Al 2 O 3 + Zr of aluminum oxide and zirconium oxide 2 is 70%, the sintered refractory product. [Selection figure] None |