SiO2:≧ 95%
Fe2O3:≦1%
Apparent Porosity:≦22%
A12O3:≦1%
True Density:≦2.33g/cm3
Introduction
Silica brick is mainly used for hot-blast stove, tunnel kiln, coke oven, glass kiln, acidic furnace non-ferrous metal smelting and some other thermo technical equipment in good furnace building materials.
Features
High purity, good thermal conductivity;
High refractoriness under load and high tridymite content;
Low true density, low expansion, low creep and low residual quartz content;
Good dimension and appearance.
Application
Widely used in hot blast stoves.
Used in high temperature sections of the checker chamber in hot blast stoves.
Used as low-cost alternative to andalusite and mullite checker bricks in hot blast stoves.
High refractoriness, average thermal shock resistance makes it suitable in consistent temperature environment.
specification
| Properties | Wall bricks Dome Bricks |
Checker Brick |
| SiO2% | ≥95 | ≥95 |
| A12O3% | ≤1.0 | ≤1.0 |
| Fe2O3% | ≤1.0 | ≤1.0 |
| Apparent Porosity % | ≤22 | ≤24 |
| True Density g/cm³ | ≤2.33 | ≤2.33 |
| Cold Crushing Strength MPa | ≥40 | ≥35 |
| Refractoriness Under Load (0.2MPa) ℃ | ≥1650 | ≥1650 |
| Residual Quartz % | ≤1.0 | ≤1.0 |
| Creep Rate 0.2MPa (1550℃*50h) % | ≤0.6 | ≤0.6 |
| Permanent Linear Change( 1450℃*2h) % | ≤0.2 | ≤0.2 |
| Thermal Expansion Coefficient(1000℃) % | ≤1.26 | ≤1.26 |
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