... brick, E-glass sedimentation tanks mullite brick. Description:FM70 is a kind of fused mullite made by fusing high purity silicon sand and aluminum ... for making glass kiln lining brick, E-glass sedimentation tanks mullite brick, BF low creep sillimanite brick, and ceramic kiln applications ... , 1-0mm, 0-200mesh, 0-325meshOther size available upon request. Fused Mullite