Unlock Superior Quality With Calcined Alumina

Calcined alumina is made by heating aluminum hydroxide to high temperatures and eliminating impurities like chemically combined water and other impurities from its chemical composition. Due to its excellent dimensional stability and hermetic properties, it finds wide use in applications like flow measurement instruments, sensors and X-ray components. Ceramic and refractory industries depend upon ceramic fiber to produce materials that resist wear and abrasion while simultaneously providing strength, thermal resilience and electrical insulation.

Purity

Calcined Alumina for Technical Ceramics is well known for its precise formulation, non toxic content and heat endurance. This grade of alumina is used in manufacturing electromagnetic machinery, high strength ceramic and refractory items designed to withstand hot working environments.

Calcined alumina undergoes high-temperature heating to eliminate chemically bound water and impurities, and comes in various particle sizes to suit specific applications, such as refractory materials or catalyst supports.

Our high purity alumina helps improve mechanical properties in finished products by increasing adhesion between materials and decreasing shrinkage during firing. Thanks to its robust atomic bonds, alumina resists thermal shock well and remains stable at high temperatures; making it especially helpful in refractory applications where calcined alumina can replace clay plasticizers in order to minimize shrinkage while increasing bonding strength and improving adhesion.

Hardness

Alumina is an extremely hard material with high abrasion resistance, making it an excellent material choice for use in grinding media, ceramics, refractories and wear parts. Furthermore, Alumina boasts excellent chemical purity as well as an extreme hardness rating (9 on Mohs’ scale versus 10 for diamond) and high density for use.

we provide several grades of calcined alumina that meet specific industrial requirements. Our S-300 PT grade comes in fine powder form that easily passes through a 45 micron sieve.

These calcined alumina grades feature low water demand and are suitable for casting mixes with low and ultralow carbon content (LC/ULCC) as well as wear resistant ceramic components. Their wide particle size distribution compared with standard calcined gamma alumina products allows for controlled polishing abrasives that improves bonding ease between clay bodies during firing and the aluminas themselves.

Durability

Calcined alumina stands out as an exceptional material due to its ability to resist abrasion, giving it superior mechanical strength and impact resistance, essential characteristics in many industrial applications. Furthermore, due to its chemical inertness it offers excellent corrosion protection that has made calcined alumina suitable for numerous refractory and ceramic products.

Alumina powder can be added to glazes to impart matteness (even using only small percentages of super fine calcined alumina will work) and stabilize the glass melt during firing, thus reducing shrinkage from high-kaolin recipes. They’re also often used in refractory castables, bricks and monolithic products as electrical insulators due to their ability to control mean pore size and specific surface area – two critical measures of microstructure for these purposes.

Chemical Inertness

Alumina ceramics are chemically inert, meaning they do not react with other elements or compounds, giving them great resistance against abrasion and corrosion. Furthermore, these ceramics remain unchanged when exposed to both oxidizing and reducing environments – making them an indispensable material in industrial petrochemistry applications.

Due to having its outer valence shell full, an atom or compound cannot gain or lose electrons in chemical reactions; therefore it cannot add or subtract electrons for participation. Therefore noble gases like helium and neon are considered chemically inert while carbon dioxide has different characteristics depending on which elements it reacts with; for instance it’s relatively inert but volatilely reactive with alkali metals like sodium and potassium.

Tabular alumina is an advanced material suitable for electrical and mechanical components that require thick metal coatings with exceptional temperature stability, such as high-vacuum systems, laser equipment or X-ray tubes.