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High-quality silica bricks for glass kilns have the characteristics of silicon oxide content and low melting index, and are mainly used in the upper structures of glass kilns such as ceilings, breast walls, hanging walls, small furnaces, and regenerators.
High-quality silica bricks for glass kilns have the characteristics of silicon oxide content and low melting index, and are mainly used in the upper structures of glass kilns such as ceilings, breast walls, hanging walls, small furnaces, and regenerators.
| 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 | |
