Slag Resistance

the capacity of refractory materials to resist the destructive action of molten slags. Slag resistance is determined by the loss in volume or weight of a refractory material upon the action of a slag and, in part, by the depth of penetration of the slag into the refractory material. Both static methods (dissolving of a refractory material in a fixed amount of slag) and dynamic methods (the action of a moving and removable slag) are used to determine slag resistance; a combination of the two methods may also be used. Slag resistance depends on the chemical nature of the slag and the refractory material as well as the density and structural features of the refractory material.