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Silica bricks for coke oven
Silica bricks for coke oven (JG)
The coke oven silica brick produced by our company has a history of more than 20 years. Its phase composition is mainly composed of phosphorite and quartz, supplemented by cristobalite. In addition, its bulk density is high, its thermal conductivity is strong, and high temperature creep is stable, ensuring long-term use without deformation.
Silica bricks for coke oven YB/5013_2005
| Project | Specified value | When retesting, the single value allows for deviation. | ||
| Bottom, furnace wall | othor | |||
| (SiO2)/% ≥ | 94.5 | - | ||
| (Al2O3)/% ≤ | 1.5 | - | ||
| (Fel2O3)/% ≤ | 1.5 | - | ||
| (CaO)/%≤ | 2.5 | - | ||
| Apparent porosity /% ≤ | 22 | 24 | +1 | |
| Normal temperature compressive strength /Mpa ≥ | 40 | 35 | 10% | |
| 0.2Mpa Load softening start temperature ℃≥ | 1650 | -10 | ||
| True density /( g/cm3)≤ | 2.33 | 2.34 | +0.01 | |
| Residual quartz /%≤ | 1.0 | - | ||
| Heating permanent line change（1450℃×2h）/% | 0～0.2 | - | ||
| Thermal expansion rate（1000℃）/%≤ | 1.28 | 1.30 | +0.03 | |
| If necessary, a thermal expansion curve from room temperature to 1200 ° C can be provided. | ||||