Brown corundum is made of bauxite and coke (anthracite) as the main raw materials and smelted at high temperature in the electric arc furnace. The abrasive tools made of it are suitable for grinding metals with high tensile resistance, such as all kinds of general steel, malleable cast iron, hard bronze, etc., and can also manufacture high refractory materials. Brown corundum has the characteristics of high purity, good crystallization, strong fluidity, low linear expansion coefficient and corrosion resistance. The practice of dozens of refractory production enterprises has verified that the product has the characteristics of no initiation, no pulverization and no cracking in the application process. In particular, it is much higher than the cost performance of traditional brown corundum. Dalian sanding and derusting makes it become the aggregate and filler of brown corundum refractory.