Studies on the Erosion of Cement Materials against the High Alumina Brik

Abstract

The mechanism of chemical erosion of cement materials against the alumina brick has been studied. The resistance of the brick against the erosion is very strong, but during long using time, the brick is slowly eroded or permeated by the molten cement, and the materials produced after erosion consist of the low melting substances, namely gehlenite and glass. The porosity of the brick has an influence to the permeation of molten materials against the brick, and depends on the amount of diaspore that is mixed for making the brick.
In the brick that contains much diaspore, the resistance against the erosion and the permeation is weaker than the brick that contains less diaspore.