Reactive Alumina

Reactive alumina raw material refers to sintered or fused raw material with α-Al2O3 as main phase, and Al2O3 content is high. Such materials are with high hardness, refractoriness is over 2050 ℃. It has corrosion resistance both to Alkali and Acid materials.

Reactive alumina powder is created from bauxite, the principal ore of aluminium. The bauxite ore consists of a mixture of gibbsite, boehmite, iron oxides, iron hydroxides, quartz, and clay minerals. Alumina is extracted via the Bayer process, where the chemical component Al2O3 (alumina powder) is distilled from the bauxite mineral mixture.

Alumina has relatively high melting and boiling point, as well as a very high hardness level. Its mechanical and compressive strengths are both higher than many comparative materials, and its electrical resistivity and thermal conductivity make alumina an ideal choice for many electrical products.

The unique characteristics that make alumina ideal for aluminium production also make it valuable for a host of other applications, particularly ones that require hardness and resistance to abrasion or other forms of chemical wear. Alumina powder is also ideal for products that require corrosion and wear resistance, and for products that require high thermal conductivity, such as electrically and thermally insulating applications.

In casting, activated alumina is used as a protective layer for smelting and casting, which can effectively prevent casting materials from being corroded by oxygen and water vapor in the air, thus improving the quality and stability of casting materials. Next is the high temperature kiln.

In high-temperature kilns, some high-temperature corrosion-resistant refractory materials are often used, and activated alumina is one of them. Its excellent corrosion resistance and thermal stability can effectively prevent breakage and wear of refractory materials at high temperatures, thereby extending their service life in high temperature environments.

In addition, activated alumina can also be used as a high-temperature gas filter, which can effectively filter impurities in high-temperature gas and improve gas utilization efficiency.

Long Keter is supplying a comprehensive dense raw materials, including high alumina bauxite, Kaolin flint clay, tabular alumina, alumina powder, brown fused alumina, white fused alumina, magnesia spinel, mullite etc.