Brown fused alumina consists almost entirely of aluminium oxide and is almost iron-free. Brown fused alumina is less pure than white fused alumina. The special composition of this angular mineral makes it extremely stable. It is also both hard and tough. Brown fused alumina is primarily used as a blasting medium and in floorings. It belongs to the group of fused alumina.

Available grain sizes

(Average grain size)

FEPA
F 012: 1400–2000µm
F 014: 1180–1700µm
F 016: 1000–1400µm
F 020: 850–1180µm
F 022: 710–1000µm
F 024: 600–850µm
F 030: 500–710µm
F 036: 425–600µm
F 040: 355–500µm
F 046: 300–425µm
F 054: 250–355µm
F 060: 212–300µm
F 070: 180–250µm
F 080: 150–212µm
F 090: 125–180µm
F 100: 106–150µm
F 120: 90–125µm
F 150: 63–106µm
F 180: 63–90µm
F 220: 53–75µm

Metric
0,25-0,50mm
0,50-1,00mm

Physical properties

Hardness: 9 mohs
Grain shape: angular
Melting point: approx. 2050°C
Specific gravity: approx. 3.9 – 4.1 g/cm³
Bulk density: approx. 1.5 – 2.1 g/cm³
(depending on grain size)

Typical chemical analysis

Al2O3: 95,20%
TiO2: 2,45%
Fe2O3: 0,15%
SiO2: 1,20%
CaO: 0,30%

Blasting systems

– Pressure blast systems
– Injection blast cabinets

Applications

Flooring industry:
– Additive for wear-resistant floorings

Blast-cleaning:
– Cleaning metallic surfaces with removal of material (abrasive effect)
– Removing rust and scale from metallic surfaces
– Removing tempering colour
– Removing paint

Other:
– Surface pre-treatment before applying protective coatings or metal spraying
– Roughening metallic surfaces before applying coatings (sweeping)
– Processing very hard components
– Deburring
– Creating a matt finish on glass
– Blasting stone (for stone masonry)

Packaging

25 kg sacks on pallets of up to 1 tonne

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