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Calcined Alumina - Product

Calcined Alumina

Calcined Alumina, also known as calcined aluminum oxide, is a high-purity, heat-treated form of alumina produced by the calcination of aluminum hydroxide. This process involves heating the material to a high temperature in a rotary kiln or furnace to remove water and convert it to a more stable, anhydrous form. Calcined Alumina is widely used in various industrial applications due to its excellent hardness, high melting point, and chemical stability.

  • Product Category: Abrasive & Material
  • Key Features:
  • High Purity: Typically contains over 99% aluminum oxide, providing a high-quality material suitable for demanding applications.
  • Thermal Stability: Maintains stability at high temperatures (up to 2000°C), making it ideal for use in high-temperature environments.
  • Hardness: Offers a Mohs hardness of approximately 9, making it suitable for abrasive and cutting applications.
  • Chemical Resistance: Resistant to most acids and alkalis, ensuring durability and stability in aggressive chemical environments.
  • Versatility: Can be used in a variety of forms, including powders, granules, and sintered products, depending on application requirements.
Applications:

Abrasives: Used as a raw material for manufacturing grinding wheels, cutting tools, and other abrasives for metal, ceramic, and stone processing.

Refractories: Employed in the production of refractory materials such as bricks and castables for high-temperature applications in furnaces, kilns, and reactors.

Catalysts: Utilized in catalytic converters and other chemical processing applications due to its high surface area and catalytic properties.

Ceramics: Applied in the production of advanced ceramics and ceramics components due to its hardness and thermal stability.

Electrical Insulation: Used in the manufacture of electrical insulators and substrates for high-voltage applications due to its excellent insulating properties.

Polishing: Employed as a polishing agent for metal, glass, and other materials to achieve a high-quality finish.

Technical Specifications:

Chemical Composition: Al₂O₃ (Aluminum Oxide) ≥ 99%

Purity: High purity with minimal impurities (Fe₂O₃ ≤ 0.1%, SiO₂ ≤ 0.1%)

Density: Approximately 3.9 g/cm³

Melting Point: ~2050°C

Particle Size: Available in various sizes from fine powders (sub-micron) to granules and coarse particles, customized based on application needs

Shape: Typically available as a fine powder or in granular form

Advantages:

High Purity and Quality: Ensures consistent performance and reliability in high-demand applications.

Thermal and Chemical Resistance: Performs well under extreme temperatures and in aggressive chemical environments, enhancing durability.

Versatility: Adaptable for a wide range of industrial applications, including abrasives, refractories, and catalysts.

Efficient Processing: Provides effective material removal, polishing, and insulation properties, improving productivity and performance.

Packaging: Available in 25 kg bags, 500 kg bulk bags, or as per customer specifications.

Storage:

Store in a dry, cool place. Ensure containers are tightly sealed to prevent contamination and moisture absorption.

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