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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 |
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|
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 |
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|
Hardness(mohs) |
9.0 |
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|
Melting point(°C) |
2250 |
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|
Maximum service temperature(°C) |
1900 |
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|
True density(g/cm3) |
3.9 |
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