Aluminum Oxide

Aluminum Oxide granules are high-purity, high-hardness inorganic materials with excellent resistance to high temperatures, wear, and chemical corrosion. They maintain stable structure even in extreme heat and are widely used in electronics, thermal management, and industrial applications.

VIMATERIAL offers both sintered alumina granules and single-crystal alumina granules to meet different operating requirements. Sintered granules provide good mechanical strength and cost efficiency, making them suitable for catalyst supports, adsorbents, and industrial fillers. Crystal granules feature higher purity, density, and corrosion resistance, making them ideal for high-end electronics, optical, and high-temperature precision applications.

We also provide customization services, including purity and size. If you have special requirements, please feel free to contact us.

Characteristics

High Melting Point: With a melting point around 2072°C (3762°F), alumina granules can withstand extreme temperatures, making them suitable for high-temperature applications such as refractory linings and kiln furniture.

Thermal Conductivity: Al₂O₃ has moderate thermal conductivity, helping in heat dissipation in applications like ceramics and metal casting.

Extreme Hardness: Ranking at about 9 on the Mohs hardness scale, aluminum oxide is extremely hard, making granules ideal for abrasive applications, such as sandblasting, polishing, and grinding.

Wear Resistance: The hardness and durability of aluminum oxide granules make them long-lasting in abrasive applications, where they can repeatedly break down materials without significant wear.

Chemical Inertness: Aluminum oxide is highly resistant to chemical reactions, making it suitable for use in environments with exposure to acids, alkalis, and other harsh chemicals. This inertness is particularly important in applications like refractory materials and catalysts.

Applications of Aluminum Oxide granules

Abrasive Blasting: Aluminum Oxide granules are widely used as a blasting medium for cleaning, finishing, and surface preparation due to their hardness and ability to efficiently remove material without contaminating surfaces.

Ceramics and Refractories: Used in the production of advanced ceramics and refractory products, aluminum oxide granules provide strength, wear resistance, and thermal stability.

Polishing and Grinding: Used in polishing compounds, grinding wheels, and sandpaper for their abrasive properties.

Catalyst and Catalyst Supports: Due to their high surface area and stability, aluminum oxide granules can serve as a base material in catalysts for industrial chemical reactions.

Heat Dissipation: In castable refractory products, the granules help with thermal management in high-temperature environments, such as furnaces and kilns.

Packaging and Storage

Alumina granules are usually packed in moisture-proof bags or sealed containers to prevent dampness and contamination, with clear labeling.

Store in a dry, clean, and well-ventilated place, away from moisture and chemicals, and check the packaging regularly.