23-08-2016 Brown Fused Alumina is the most important artificial corundum in industry minerals widely used in bonded abrasive grains is a matrix of closed size abrasive grains pressed or mounded together with the help of vitrified, resinoid or rubber bonding material into a variety of shapes, like grinding wheel, honing stone etc. The matrix is fired at high temperature to provide a high strength bonding between the abrasive grains.