Refractory mineral Chrome Alumina

Product information

LKAB Minerals Andalusite is an alumino-silicate raw material used to manufacture refractory linings. AChrome Alumina is produced by fusing high-purity calcined alumina and chromium oxide. The end product has excellent hardness and resistance properties.

LKAB Minerals Chrome Alumina is produced during the manufacture of aluminothermic chromium metal. Applications include the manufacture of furnace and ladle refractories, abrasive grinding wheels, and as a decorative road surface aggregate.

Standard grades

LKAB Minerals Chrome Alumina is available in the following grades as standard:

• 5-8mm (-8+5mm)
• 3-5mm (-5+3mm)
• 1-3mm (-3+1mm)
• 0-1mm (-1mm)
• 0-250μm (-60#)
• 0-150μm (-100#)
• 0-15μm (-200#)

Other grades are available on request.

Packaging

Our product range is available in 25kg paper sacks, 1000kg bulk bags, or as bulk as standard.

Applications

Chrome Alumina is a high-purity refractory mineral used in high-temperature applications. Some key applications include:

Steel production

• Used in the lining of furnaces to resist high temperatures and chemical wear.
• Enhances the life of refractory linings by providing resistance to thermal shock.

Glass manufacturing

• Helps in the production of glass by offering stability in glass furnaces.
• Improves the resistance of materials used in glass-making processes under extreme heat.

Ceramic industry

• Added to ceramics to increase heat resistance and improve structural integrity.
• Used in high-temperature kilns for producing advanced ceramics and bricks.

Petrochemical industry

• Utilised in high-temperature reactors and distillation units.
• Increases the durability of refractory linings in chemical processing equipment.

Cement industry

• Helps produce high-performance cement by improving heat resistance.
• Provides resistance to aggressive chemical environments in cement plants.

Mineral information

Chemical properties of Chrome Alumina

Below, you can see the percentage composition of Aluminium Oxide (Al₂O₃), Chromium Oxide (Cr₂O₃), Potassium Oxide (K₂O) and Calcium Oxide (CaO).

Mineral origin

The mineral Chrome Alumina is formed from the manufacture of chromium metal by the aluminothermic process.

Toxicology

This is an inert material. You can download the Safety Data Sheet in the data centre.

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