The difference between garnet Natural corundum, also known as garnet, is made into abrasive materials through washing, sieving and other processes. It has strong toughness, good finish of grinding parts, few and shallow sand marks, fine and uniform grinding surface, high benefit, low cost, but extremely short service life. Therefore, natural emery is not widely used in production. Industrial corundum is made of bauxite, anthracite, and iron filings by high-temperature electrofusion and sintering. It has a high melting point, a large specific gravity, and strong acid and wear resistance. It can be made into various sandpaper, emery cloth, grinding wheels, grinding stones, and refractory materials. Casting, anti-skid sand, wear-resistant floor, etc.
