Product information

Chrome 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.


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

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).

Chemical analysisPercentage (%)

Mineral origin

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


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

To find out any further information, please fill in the contact form and a representative will be in contact.