Corundum and widespread use of the chemical composition

The origin of most of the bauxite and corundum origin are closely related. Rich country of Henan bauxite, bauxite production giant, it has also become the largest producer of corundum area. Corundum has a hardness, toughness, resistance to crushing ability, high temperature, anti-oxidation, anti-corrosion, low cost, for other characteristics.
Corundum widely used in abrasives, refractories, sandblasting, grinding and polishing, carborundum wearable Floor, precision casting shell mold making, with high purity, good crystalline liquidity strong, low coefficient of linear expansion, corrosion-resistant characteristics .
Brown fused aluminum oxide (Al2O3) is not less than 92.5% corundum widely often used in wear industry, which there are many types, the most common is washed corundum.
Corundum is often used in an ink jet washing of production, this is because, under extreme pressure, it can use its sharp corners hit the surface which is the other advantages not corundum. Then washed for inkjet corundum dust generated when handling relatively small, to a certain extent, to ensure the operator's health. As slag relatively brittle, the jet mill process, the formation of small particles easily crashing, relatively small proportion of the slag, slag resulting small particles suspended in the air, causing environmental pollution, too, is a very delicate quartz sand abrasive, but definitely not comparable and corundum.