Sillimanite high alumina brick, also known as sillimanite fire resistant brick, is produced by using sillimanite concentrate, or clinker calcined at about 1500 ℃, or mixing clinker with concentrate, or adding sillimanite concentrate to bauxite clinker. The biggest feature of sillimanite high alumina brick is that the product has continuous creep resistance during use, which is similar to the high purity of sillimanite raw materials, It is related to strong creep resistance and continuous Mullitization. Compared with the corresponding high alumina brick, the load softening temperature of sillimanite high alumina brick produced from sillimanite raw material is increased by 100-150 ℃, the linear shrinkage is small, the organizational structure is uniform, compact, the thermal shock stability is good, and the corrosion resistance is good. Therefore, it is commonly used in iron and steel, chemical industry, glass, ceramics and other industries to prolong the service life.
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