Alumina

Aluminium oxide calcined

Aluminium oxide produced commercially is obtained by the calcination of aluminium hydroxide. Calcined alumina products are used in a wide range of ceramic and refractory applications. Alumina offers many specific properties - High compression strength, resistant to abrasion, chemically resistant, high hardness, high thermal conductivity, high dielectrical strength and resistant to thermal shock.

Uses for Calcined Aluminium Oxide:

• Ceramic materials such as Electronic devices
• Mechanical parts
• Whiteware
• Fillers for resin
• A key raw material for refractories and abrasives
• In pottery it is used to increase glaze viscosity, firing range and resistance to crystallization.

Properties of Alumina:

• CAS No. 1344-28-1
• Chemical Formula: Al₂O₃
• M.Wt: 101.94
• S.Gravity: 4.0
• Odour: odourless
• Solubility: insoluble in water
• Purity: 98% min.
• Melting point: ca 2000C
• Appearance: White crystalline powder
• Other Names: Alumina calcined, calcined aluminium oxide, activated Alumina; alpha-Alumina