What Is The Difference Between The Status Of Activated Alumina Powder And High Temperature Calcined Alumina Powder?

High-temperature calcined alumina powder is made from industrial aluminum hydroxide, bauxite, molecular sieves and grinding balls, which are calcined at high temperature for a long time in a tunnel kiln. During the smelting process, the carbon in the anthracite reduces impurities such as silicon oxide (SiO2), iron oxide, and titanium oxide in the alumina into metals. These metals are combined together to form an iron alloy. Because its density is higher than that of the corundum melt, it settles to The furnace bottom is separated from the corundum melt.
High-temperature calcined alumina powder has strong resistance to crushing, oxidation resistance, corrosion resistance, good chemical stability, and is a widely used abrasive.

Activated alumina powder is an abrasive made from industrial aluminum hydroxide powder which is heated, melted and recrystallized in an electric arc furnace. Impurities in the raw materials are not eliminated during the smelting process, so the quality of activated alumina is closely related to the purity of the raw materials. The content of Al2O3 in activated alumina should be above 99.5%. Its hardness is higher than high-temperature alumina powder, but it is more brittle.

It has good cutting, anti-oxidation and gas corrosion properties, and has good insulation. It is mainly used for fine grinding and precision grinding of quenched steel and alloy steel, grinding and processing of threads and gears, etc. Activated alumina powder can also be used for precision casting and advanced refractory materials.

If you want to know more about high-temperature calcined alumina powder, please click the following website:

http://www.huaomaterials.com/alumina-ceramic/why-should-white-fused-alumina-choose.html