Brown Aluminum Oxide Refractory Grade

  • Description
Product Detail


Brown aluminium oxide/brown fused alumina(A)

Al2O3 95%min.

Fe2O3 0.3%max.

SiO2 1.5%max.

TiO2 3.0.%max.

Magnetic material content 0.05%

color  brown ……

hardness(mohs) 9

true density 3.9

Raw Marterial: Bauxite, coal

Brown aluminium oxide is fused and crystallized under high temperature from a mixture of bauxite and other and other raw materials. It is characterized by its high hardness,good toughness and shape in size.


Characteristics:

1 high hardness,good toughness and sharp shapening

2 good grinding, polishing, high temperature resistance

3 Corrosion- resistance,  high strength, high hardness and wear- resistance


Purpose

Specification

Chemical Composition

(%)

Magnetic

material

content(%)max

Abrasives grade


Al2O3min

Fe2O3max

SiO2max

TiO2max



grain

12-80

95

0.3

1.5

3.0

0.05



90-150

95

0.3

1.5

3.0

0.03



180-220

94.5

0.3

1.5

3.5

0.02


micropowder

240-4000

92.5

0.5

1.8

4.0

—

Refractory grade

Group Size

0-1mm

1-3mm

3-5mm

5-8mm

94.5

0.3

1.5

3.0

—


Fine Powder

-180mesh

-200mesh

-240mesh

-320mesh

93.5

0.5

1.5

3.5

—

color

Dark brown

Hardness(mohs)

9.0

Melting point(°C)

2250

Maximum service temperature(°C)

1900

True density(g/cm3)

3.9

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Dragon Abrasives Group Limited

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