Brief introduction of white corundum White corundum is made of alumina powder, which is melted at a high temperature above 2000 degrees by electric arc, crushed and shaped, iron removed by magnetic separation and screened into various particle sizes. Dense texture, high hardness and sharp corners. The color is white, hardness is slightly higher than that of brown corundum, toughness is slightly lower, grinding ability is strong, calorific value is low, efficiency is high, acid and alkali corrosion resistance, high temperature resistance and thermal stability are good. Density of white corundum The density of white corundum can be divided into white corundum bulk density and white corundum true density. 1, and the bulk density of white corundum is: 1.53- 1.99g/cm3. The packing density of abrasives is related to abrasive particle size, particle composition, variety and particle shape. Generally speaking, the bulk density of coarse-grained abrasives is higher than that of fine-grained abrasives, and the bulk density of mixed-particle abrasives is higher than that of single-particle abrasives. 2. The particle density of white corundum is 3.95-4.0 g/cm3, and the true density of abrasive refers to the mass of abrasive contained in unit volume (excluding the volume with pores).