Brown aluminium oxide/brown fused alumina(A)
Al2O3 95%............Fe2O3 0.3%....SiO2 1.5%......TiO2 3.0.%........ Magnetic material content 0.05%.....color brown ……hardness(mohs) 9…….ture density 3.9
Marterials: Bouxite
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 shapein
2 good grinding, high temperature resistance
3 Corrosion- resistance, high strength, high hardness and wear- resistance
Chemical coposition
Purpose
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Specification
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Chemical Composition(%)
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Magnetic material content(%)max
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Abrasives grade
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Al2O3min
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Fe2O3max
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SiO2max
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TiO2max
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grain
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12-80
|
95
|
0.3
|
1.5
|
3.0
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0.05
|
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90-150
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94
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0.3
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1.5
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3.0
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0.03
|
||
180-220
|
93
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0.3
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1.5
|
3.5
|
0.02
|
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micropowder
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240-4000
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92.5
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0.5
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1.8
|
4.0
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—
|
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Refractory grade
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Group Size
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0-1mm
1-3mm
3-5mm
5-8mm
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94.5
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0.3
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1.5
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3.0
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—
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Fine Powder
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-180mesh
-200mesh
-240mesh
-320mesh
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93.5
|
0.5
|
1.5
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3.5
|
—
|
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color
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Dark brown
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Hardness(mohs)
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9.0
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Melting point(°C)
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2250
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Maximum service temperature(°C)
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1900
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Ture density(g/cm3)
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3.9
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Application
Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as: carbon steel,general-purpose alloy steel,annealed malleable iron and hard broze,etc.It also can be used as refractory materials.