Silica brick is the most used and important brick type in float glass kiln. For large glass kilns, silica bricks are mainly used in the melting section and the working section of the kiln roof swan, chest wall and front and rear end walls, heat storage room top swan and heat storage room upper partition wall, etc.
The SiO2 content of silica bricks for glass kilns is 96-98%. Its density is 2.35-2.38g/cm3. It has high structural strength at high temperature, such as high load softening temperature (1640~1700℃) and low creep rate. After absorbing a small amount of alkali components in addition to very slight fusion corrosion, and does not reduce the structural strength of the kiln roof.
Characteristics of Kerui Silicon Bricks For Glass Kiln
- High temperature volume stability.
- Slight contamination of the glass liquid.
- Chemical erosion resistance.
- Small bulk density, can reduce the weight of the furnace body.
Parameters of Kerui Silicon Bricks For Glass Kiln
| Item | Unit | KBG-96a | KBG-96b | KBG-95 | |
| SiO2 | ≥ | % | 96 | 96 | 95 |
| FeO3 | ≤ | % | 0.6 | 0.8 | 1.0 |
| Melting index, Al2O3+2R2O3 | ≤ | % | 0.5 | 0.7 | – |
| Apparent porosity | ≤ | % | 21 | 22 | 22 |
| True Density | ≤ | g/cm3 | 2.34 | 2.34 | 2.34 |
| 0.2MPa Load softening temperature | ≥ | ℃ | 1680 | 1670 | 1670 |
| Normal temperature compressive strength | ≥ | MPa | 40 | 35 | 30 |
| re-burn line change. 1450℃*2h | ≤ | % | +0.2 | +0.2 | +0.2 |
