... crystallized -under high termperature form of materials Brown Corundum,fuesd alunmina Brown Fused Alumina is bauxite, carbon ... restore the system obtained brown artificial corundum, and are thus brown corundum. Brown Fused Alumina is the main ... joints, sealing ring mold. (3) corundum insulating materials, such as lightweight corundum brick, corundum hollow ball and fiber products, widely used ...