1.The Silica Refractory Bricks For Coke Oven 2.The Silica Refractory Bricks For Coke Oven have a simple, elegant appearance
Items | Numerical requirements | Retest Allowed Deviation | ||
Bottom,Furnace wall | Other | |||
W(SiO2)/% ≥ | 94.5 | — | ||
W(Al2O3)/% ≤ | 1.5 | — | ||
W(Fe2O3)/% ≤ | 1.5 | — | ||
W(CaO)/% ≤ | 2.5 | — | ||
Apparent Porosit/% ≤ | 22 | 24 | +1 | |
Cold Crushing Strength/ Mpa ≥ | 40 | 35 | 10% | |
Refractoriness Under Load (T0.6)/°C ≥ | 1650 | -10 | ||
True Density /(g/cm3) ≤ | 2.33 | 2.34 | +0.01 | |
Residual Quartz/% ≤ | 1 | — | ||
Permanent Change In The Heating(1450°C*2h)/% | 0~0.2 | — | ||
Thermal Expansion(1000°C) /%≤ | 1.28 | 1.3 | +0.03 | |
If necessary, ~1200 °C ambient temperature can provide the thermal expansion curves. | ||||
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Silica Refractory Bricks For Coke Oven