Fused Alumina

Alumina (also known as Corundum or Aluminium Oxide) is the family name for inorganic compounds with the chemical formula Al2O3. Fused Alumina is made in electric arc furnace by passing a current between vertical carbon electrodes. The heat generated from this procedure melts the alumina feedstock.

LKAB Minerals offer Brown and White Fused Alumina for the Refractory industry. Scroll down to read more about the products, their uses and properties.

Brown Fused Alumina

Brown Fused Alumina is a dense material produced from bauxite raw material. The end product has a low iron content making it particularly valuable in refractory applications.

LKAB Minerals Brown Fused Alumina

Brown fused alumina uses

Refractory & Foundry

Brown Fused Alumina is utilised within the refractory industry for the manufacture of high alumina fired and monolithic refractory products like bricks, pre-cast shapes and also foundry applications, where the addition of Brown Fused Alumina helps to obtain a smooth surface finish in investment castings.

Abrasives

Within the abrasive industry Brown Fused Alumina is a valuable addition to products like abrasive papers and in shot blasting applications.

Brown fused alumina properties

Chemical properties

Al2O3 (%)
95.38
SiO2 (%)
0.98
TiO2 (%)
2.55
Fe2O3 (%)
0.16

White Fused Alumina

White Fused Alumina is produced by fusing calcined alumina. It is white in colour, a dense mineral and has predominantly large crystals of Alpha Alumina.

LKAB Minerals White Fused Alumina

White Fused Alumina uses

Refractories

White Fused Alumina is widely used in the refractory industry as it is a very pure, low iron, high alumina material suitable for a range of applications.  Specific refractory applications include high tech refractory castables, isostatic pressed refractories and pre-cast refractory shapes.

Abrasives

Due to its hardness (Mohs Hardness >9), White Fused Alumina is an ideal material for abrasive applications including sandblasting, grinding, polishing and coated products.

White Fused Alumina properties

Chemical properties

Al2O3 (%)
99.60
SiO2 (%)
0.08
TiO2 (%)
0.01
Fe2O3 (%)
0.02

Fused Alumina standard grades

LKAB Minerals range of Fused Aluminas, either Brown or White, are available in the following grades as standard:

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

Other grades are available on request.

Fused Alumina packaging

Our Fused Aluminas are available in 25kg paper sacks, 1000kg bulk bags or as bulk as standard.

Fused Alumina toxicology

Non-toxic, non-hazardous stable minerals. You can download the Safety Data Sheet in the section on the right hand side for further information.

Please contact us for datasheets on a single grade or further information on our Brown or White Fused Alumina. You can find our sales contact by choosing your country in the upper right expert box of this page.

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Product expert

Vicky Yates
Sales Manager, Refractory Minerals & Olivine

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