FM-94 coke oven refractory bricks, with high purity SiO2 formula, low impurity, high refractory strength and strong thermal shock resistance, are applied in the key areas of coke-making coke ovens, professionally resisting high temperature corrosion and guaranteeing long-term stable operation.
Silicon Brick for Coke Oven is a kind of silicon refractory products used for masonry of coke oven, it is a kind of acid resistant brick. Silicon bricks for coke ovens are the main material for masonry coke ovens, and can be used for masonry coke ovens’ heat storage chamber wall, ramp, combustion chamber, and furnace roof.
Fireramo, as a manufacturer of silicon bricks for coke ovens, we have two kinds of silicon bricks for coke ovens for you to choose from: common silicon bricks for coke ovens and dense silicon bricks for coke ovens.
Dense coke oven bricks are more thermally conductive than ordinary coke oven bricks. Please refer to the table below or contact us for more details.
High purity raw material: SiO2 content ≥94.5% in brick body, ≥94.0% in wall and other types of bricks, which ensures the bricks have excellent acid refractory performance and high temperature stability.
Strict control of impurity content: the content of Fe2O3, CaO and Na2O+K2O in silica bricks for coke ovens is precisely controlled at a very low level, in order to reduce the erosion of slag on the bricks and reduce the reaction activity at high temperature.
Excellent physical properties: Silica bricks for coke ovens have a strong cold compression strength, with minimum values (Xmin) of 40 MPa (bottom), 35 MPa (wall) and 20 MPa (other types), which ensures the mechanical strength and structural integrity of the brick body during construction and operation.
Excellent thermal resistance: The refractive index (indicating creep resistance) of Fireramo silicone bricks for coke ovens is ≥1650°C under a load of 0.2 MPa, and the permanent linear change is controlled to be between 0 and 0.2% after 2 hours of continuous heating at 1450°C, showing excellent thermal stability and thermal shock resistance.
Low expansion rate: the thermal expansion rate of silicon for Fireramo coke oven is ≤1.28% at 1000℃, which effectively reduces the risk of stress damage caused by temperature change.
Low porosity and reasonable density: the apparent porosity of Fireramo silicon for coke ovens is ≤22%, and the real density is ≤2.33 g/cm³, which ensures good thermal insulation effect and low thermal conductivity.
FM-94 series refractory bricks are widely used in the construction of coke ovens in the cokemaking industry. They are especially suitable for the masonry of key parts of coke oven combustion chamber, carbonisation chamber and heat storage chamber, and are able to withstand the challenges posed by long-time high-temperature operation and periodic temperature fluctuations.
Item | Specification | ||||
| FM-94 | ||||
| Bottom(LD) | Wall(LB) | Others(QT) | ||
w (SiO2), % | μ0 | ≥94.5 | ≥94.0 | ||
| σ | 1.0 | 1.0 | ||
w (Al2O3), % | μ0 | ≤1.2 | ≤1.5 | ||
| σ | 0.3 | 0.3 | ||
w (Fe2O3), % | μ0 | ≤1.2 | ≤1.5 | ||
| σ | 0.2 | 0.2 | ||
w (CaO), % | μ0 | ≤3.0 | ≤3.0 | ||
| σ | 0.35 | 0.35 | ||
w (Na2O+K2O), % | μ0 | ≤ 0.35 | ≤0.35 | ||
| σ | 0.04 | 0.04 | ||
Apparent Porosity,% | μ0 | ≤22 | ≤24(26 b) | ||
| σ | 1.5 | 1.5 | ||
Cold Crushing Strength, MPa | μ0 | ≥40 | ≥35 | ≥28 | |
| σ | 10 | 10 | 10 | |
| Xmin | 30 | 25 | 20 | |
0.2MPa Refractoriness Under Load,℃ | μ0 | ≥1650 | |||
| σ | 13 | |||
True Density,g/cm3 | μ0 | ≤2.33 | ≤2.34 | ||
| σ | 0.1 | 0.1 | ||
Residual Quartz,% | μ0 | ≤1.5 | |||
| σ | 0.5 | |||
Permanent Linear Change ,%,(1450℃×2h) | Xmin~Xmax | 0~0.2 | |||
Thermal Expansion Rate(1000℃),% | μ0 | ≤1.28 | ≤1.30 | ||
| σ | 0.05 | 0.05 |
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