Technology:
Brown fused alumina use high-quality bauxite as main raw material, it is made in different particle size after purification, impurity cleaning, crystallization, sorting, crushing, magnetic separation in temperature above 2200
Product performance:
High hardness, strength, impact resistance, high temperature resistant, anti-oxidation, corrosion resistance, low creep.
Application:
Resin ceramic abrasive, sand blasting, grinding and polishing, and is widely used in anti-wear runways, high-temperature coating matrix and metallurgy, chemical industry, and other high-level furnace refractories.
Physical and chemical indicators of corundum
Use
|
Specifications
|
The main chemical components%
|
Magnetic materials%
|
|
Al2O3
|
Fe2O3
|
SiO2
|
TiO2
|
|
Abrasives
|
F
|
4#80#
|
≥95.0
|
≤0.25
|
≤1.5
|
≤2.3
|
≤0.05
|
|
90#150#
|
≥95.0
|
≤0.03
|
|
180#240#
|
≥94.0
|
≤0.25
|
≤1.5
|
≤2.3
|
≤0.02
|
|
P
|
8#80#
|
≥95.0
|
≤0.25
|
≤1.2
|
≤2.5
|
≤0.05
|
|
100#150#
|
≥94.0
|
≤0.03
|
|
180#220#
|
≥93.0
|
≤0.3
|
≤1.5
|
≤2.5
|
≤0.02
|
|
W
|
1#-63#
|
≥92.5
|
≤0.4
|
≤1.8
|
≤3
|
|
|
|
Sand paragraph
|
0-1mm
1-3mm
3-5mm
5-8mm
8-12mm
|
≥95
|
≤0.25
|
≤1.5
|
≤2.3
|
|
|
25-0mm
10-0mm
50-0mm
30-0mm
|
≥95
|
≤0.25
|
≤1.5
|
≤2.3
|
|
|
Powder
|
180#-0
200#-0
320#-0
|
≥94.5≥93.5
|
≤0.3
|
≤1.5
|
≤3
|
|
Note: F for the consolidation abrasive and sand blasting
P for Coated Abrasives
W for the powder, W40,that is, 320 #
|
The physical properties of corundum
|
|
|
Item
|
Indicators
|
|
Color
|
Dark brown (dark blue after calcining)
|
|
Crystal shape
|
Trigonal system
|
|
Hardness (Mo's)
|
≥9.0
|
|
Melting Point ()
|
2250
|
|
The maximum temperature ()
|
1900
|
|
True Density (g/cm3)
|
≥3. 90
|
|
Linear expansion coefficient (0-1600 )
|
79
|
|
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