What Is The Standard For Chrome Corundum Castable? Composition And Application Range Of Chrome-corundum Castable.
Chromium corundum refractory castable is a castable refractory material with AL2O3 and Cr2O3 as the main components. It is a neutral refractory castable. It is composed of coarse aggregate, fine aggregate, and powder according to a certain proportion, and add a certain amount of binder and admixture together composed of the material suitable for casting construction molding.
With the increase of the amount of Cr2O3, the slag resistance of castable also increases, especially the slag permeability resistance increases significantly. Because Cr2O3 reacts with AL2O3 to form an aluminum-chromium solid solution, reacts with other impurities to form a chromium-containing glass phase, and forms an island filling between chromium-corundum crystals, and the viscosity is large, which can prevent the penetration of slag: because the high viscosity liquid phase covers the surface of the reaction layer, it also reduces the erosion rate of slag. From the point of view of slag resistance of castable, the more Cr2O3 added, the better.
