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Silica bricks in coke oven,refers to a siliceous refractory product with tridymite as the main crystal phase used to build coke ovens.
Silica bricks in coke oven,refers to a siliceous refractory product with tridymite as the main crystal phase used to build coke ovens. A modern coke oven is a huge thermal equipment built with thousands of brick types and tens of thousands of tons of refractory materials.
Silica brick is the main material of its lining and constitutes the basic part of the coke oven: regenerator wall, chute, combustion chamber, carbonization chamber, furnace roof, etc., accounting for 60%-70% of the total amount of refractory bricks in a coke oven.
| Silica series | Silica dense brick | Silica checker brick | Silica brick for glass furnace | |
| Item | Unit | K | RG-95 | BG-95 |
| SiO2 | % | ≥95 | ≥95 | ≥95 |
| Al2O3 | % | ≤1.0 | ≤1.0 | ≤1.0 |
| Fe2O3 | % | ≤0.5 | ≤0.5 | ≤0.5 |
| Bulk density | g/cm3 | ≥1.80 | ≥1.78 | ≥1.85 |
| True density | g/cm3 | 2.34 | 2.34 | 2.34 |
| Apparent porosity | % | ≤22 | ≤22 | ≤20 |
| Cold crushing strength | Mpa | ≥30 | ≥30 | ≥30 |
| Residual quarze, | ℃ | ≤1.0 | ≤1.0 | ≤1.0 |
| Refractoriness under load | ≥1650 | ≥1650 | ≥1650 | |
