Difference between White Fused Alumina and Calcined Alumina Powder
Zhongsen Editor 2024-12-10White Fused Alumina and High Temperature Calcined Alumina Powder are both white powder/grit, and have very similar chemistry content(mainly 99%min Aluminium Oxide in form of alpha Al2O3). But they have different processing methods, physical and chemical performance.
High Temperature Calcined Alumina Powder is produced by roasting in a rotary kiln at 1300-1400 ℃, which has high temperature resistance and wear resistance. Therefore, it is commonly used in the refractory and ceramic industries. Fine produced calcined alumina micropowder can also be applied to electronic vacuum tube shells, spark plugs and other electronic ceramics, sealing rings, textile machinery and other wear-resistant ceramics, alumina crucibles, high-temperature materials such as ceramic tubes, high-frequency insulation ceramics, LCD substrate glass, etc.
White Fused Alumina is made by melting Alumina Powder at a high temperature of over 2000 degrees in an electric arc and then cooling down. It is crushed and shaped, magnetically selected to remove iron, and sieved into various particle sizes. Due to its dense crystal structure, high hardness, and sharp angular shape, white fused alumina is suitable for manufacturing ceramics, mold abrasives, polishing, sandblasting, etc. It can also be used for manufacturing refractory materials. It is a very important abrasive for production of abrasive products, grinding tools, sandblasting, lapping, cutting and polishing etc.
