The difference between white corundum and calcined alumina powder
White corundum is made of alumina powder as raw material. The processing technology of high-temperature calcined alumina powder and white corundum are different, and the results are also different. So what are the differences between white corundum and calcined alumina powder?
High-temperature calcined alumina powder is relatively easy to process and has low processing costs, so it is widely used in the refractory and ceramic industries. Meet customer needs while reducing production costs.
Finely produced calcined alumina powder can also be used in electronic vacuum tube shells, spark plugs and other electronic ceramics, sealing rings, textile machinery and other ceramics, alumina crucibles, porcelain tubes and other high-temperature materials, high-frequency insulating ceramics, LCD substrate glass, etc.
High-temperature calcined alumina powder is produced by roasting in a rotary kiln at 1300-1400°C, and is therefore mostly used in the refractory and ceramic industries.
White corundum is made by melting in an electric arc at a high temperature of over 2000 degrees and then cooling. It is crushed and shaped, magnetically separated to remove iron, and screened into various particle sizes. Because the white corundum crystals are dense, hard, and the particles form sharp angles, they are suitable for making ceramics. , mold abrasives, polishing, sandblasting, etc., and can also be used to make refractory materials. It is a very important abrasive.
It can be seen that both alumina powder and white corundum have their own characteristics. When choosing white corundum and calcined alumina powder, you should decide which product to purchase based on your intended use.