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silica bricks for coke oven passed ISO certified
1.good resistance to acid slag and good heat conductivity
2.RUL 1620
best-selling silica bricks for coke oven passed ISO certified .it is made of quartz stone material,the content od Sio2 is above 93%,it has good resistance to acid glad and good heat conductivity,and the refractoriness is 1690-1710.C,RUL is beyond 1620.C
items | Furance bottom/ furancre wall | rests | allow deviation |
SiO2 % | ≥94.5 | - | |
Al2O3 % | ≤1.2 | - | |
Fe2O3 % | ≤1.2 | - | |
CaO % | ≤2.5 | - | |
0.2MPa RUL (°C) | 1650 | -10 | |
True density (g/cm3) | ≤2.33 | ≤2.34 | +0.01 |
Residual quarlz% | ≤1.0 | - | |
AP% | ≤22 | ≤24 | +1 |
CCS(MPa) | ≥40 | ≥35 | 10% |
PLC(1450°C *2h) % | 0~0.2 | - | |
Thermal expansion(1000°C) % | ≤1.28 | ≤1.30 | +0.03 |
