Chrome alumina is a synthetic material produced by fusing high-purity calcined alumina and chromium oxide. Also called red corundum or pink corundum, It is a hard, wear-resistant material with excellent thermal and chemical resistance. Chrome alumina is available in a variety of forms, including grains, powders, and bricks.

Characteristics

• High Melting Point: It has a melting point of about 2435 °C.
• Hardness: Chromium(III) oxide is a hard material, rating 8-8.5 on the Mohs scale of hardness.
• Stability: It’s chemically stable and doesn’t readily react with acids or bases.
• Magnetic Properties: Chrome alumina is weakly ferromagnetic.
• Health and Safety: While generally considered non-toxic, inhalation of chromium(III) oxide dust may cause respiratory irritation. As always, care should be taken when handling and using this compound, especially in powder form.

Applications

Chrome alumina is used in a wide range of applications, including:

• Refractories: Chrome alumina is used to make refractories for furnaces, ladles, and other high-temperature applications.
• Abrasives: Chrome alumina is used to make abrasive grinding wheels and other abrasive products.
• Ceramics: Chrome alumina is used to make ceramic products such as tiles, bricks, and electrical insulators.
• Pigments: Chrome alumina is used to make pink and red pigments for paints, plastics, and other materials.
• Other applications: Chrome alumina is also used in a variety of other applications, such as catalyst supports, wear-resistant coatings, and dental implants.

Chrome alumina is a versatile and high-performance material that is used in a wide range of industries.

Specific Application Examples

Here are some specific examples of how chrome alumina is used:

• In the glass industry, chrome alumina is used to make refractories for glass furnaces and to produce a variety of glass products, such as optical glass and borosilicate glass.
• In the steel industry, chrome alumina is used to make refractories for steel ladles and other high-temperature equipment.
• In the automotive industry, chrome alumina is used to make abrasive grinding wheels for finishing metal parts.
• In the electronics industry, chrome alumina is used to make ceramic substrates for electronic components.
• In the construction industry, chrome alumina is used to make ceramic tiles and bricks for high-traffic areas.

Chrome alumina is a valuable material with many important applications.