65% High Alumina Refractory Brick Light Yellow Neat Appearance High Softening Point
65% High Alumina Refractory Brick Light Yellow Neat Appearance
|
Al2O3 (%)
|
≥60 | ≥70 | ≥75 | 78-80 |
|
SIO2 (%)
|
32 | 22 | 20 | ≥18 |
|
Fe2O3 (%)
|
≤1.7 | ≤2.0 | ≤1.8 | ≤1.8 |
|
Na2O+K2O(%)
|
<2.3 | <2.0 | <1.2 | |
|
Refractoriness
|
1790 | >1770 | >1790 | ≥1790 |
|
refractoriness under load 0.2mpa(°C)
|
1450 | >1510 | >1520 | ≥1520 |
|
Porosity (%)
|
22 | <22 | <21 | 20 |
|
Bulk density(g/cm3)
|
2.33 | 2.43-2.48 | 2.45-2.55 | 2.55 |
|
Cold Cushing strength (Mpa)
|
≥45 | ≥50 | ≥54 | ≥60 |
|
Thermal expansion at 1000°C (%)
|
≤0.3 | ≤0.3 | ≤0.3 | ≤0.3 |
|
Reheating shrinking change(%) 1500°CX24h
|
-0.3 | -0.3 | -0.3 | -0.3 |
Features:
Resistance to High temperature, Resistance to erosion, resistance to abrasion;
Excellent compression strength;
Resistance to acid and alkali;
Excellent heat stability.
Application
The high alumina bricks are widely applied to industrial furnace, glass furnace, chemical industrial furnace, utility industry furnace lining, smelting furnace, and heat insulation ventilation wall.
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