Application:Used in various furnaces,such as hot blast furnace,coke oven,lime kiln reheating furnace soaking furnace,etc.
High Alumina Brick HA-60 Item | Standard | Al2O3(%) | ≥60 | SIO2(%) | 32 | Fe2O3(%) | ≤1.7 | Na2O+K2O(%) | <2.3 | Refractoriness | 1790 | refractoriness under load 0.2mpa(°C) | 1450 | Porosity(%) | 22 | Bulk density(g/cm3) | 2.33 | Cold cushing strength (mpa) | ≥50 | Thermal expansion at 1000°C(%) | ≤0.3 | Reheating shrinkingchange(%) 1500°CX24h | -0.3 |
High Alumina Brick HA-70 Item | Standard | Al2O3(%) | ≥70 | SIO2(%) | 22 | Fe2O3(%) | ≤2.0 | Na2O+K2O(%) | <2.0 | Refractoriness | >1770 | refractoriness under load 0.2mpa(°C) | >1510 | Porosity(%) | <22 | Bulk density(g/cm3) | 2.43-2.48 | Cold cushing strength (mpa) | ≥50 | Thermal expansion at 1000°C(%) | ≤0.3 | Reheating shrinkingchange(%) 1500°CX24h | -0.3 |
High Alumina Brick HA-75 Item | Standard | Al2O3(%) | ≥75 | SIO2(%) | 20 | Fe2O3(%) | ≤1.8 | Na2O+K2O(%) | <1.2 | Refractoriness | >1790 | refractoriness under load 0.2mpa(°C) | >1520 | Porosity(%) | <21 | Bulk density(g/cm3) | 2.45-2.55 | Cold cushing strength (mpa) | ≥54 | Thermal shock resistant at 1100C(water) | >10 | Thermal expansion at 1000°C(%) | ≤0.3 | Reheating shrinkingchange(%) 1500°CX24h | -0.3 |
High Alumina Brick HA-80 Item | Standard | Al2O3(%) | 78-80 | SIO2(%) | ≥18 | Fe2O3(%) | ≤1.8 | Refractoriness | ≥1790 | refractoriness under load 0.2mpa(°C) | ≥1520 | Porosity(%) | 20 | Bulk density(g/cm3) | 2.55 | Cold cushing strength (mpa) | ≥60 | Thermal expansion at 1000°C(%) | ≤0.3 | Reheating shrinking change(%) 1500°CX24h | -0.3 |
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High alumina brick
