Refractoriness (℃): | 1580< Refractoriness< 1770 |
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Feature: | Long Time Materials |
Type: | Refractory Material |
Shape: | Brick |
Material: | Slica |
Bulk Density: | 2.34-2.36 g/cm3 |
Customization: |
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In general, silica bricks are used for coke and annealing furnace, covering the walls of the furnaces, in high heat areas of melting furnaces.
Advantage:
1) Silicon oxide is above 95%.
2) Good acid erosion resistance.
3) High softening point with temperature.
4) No shrink in burn repeatedly.
5) Temperature of refractoriness under load is above 1650º C Stable Capability, High Quality, Excellent Service, Competitive price is the most important advantage of our products.
Technical Specifications | ||
SiO2 | max (%) | 94-96 |
Al2O3 | min (%) | 1.5-1.0 |
Fe2O3 | min (%) | 0.8-1.5 |
Apparent porosity | (%) | 22-24 |
Cold crushing strength | (MPa) | 30-45 |
Refractoriness under load | (ºC) | 1650-1680 |
Thermal expansion coefficient (1000ºC) | (%) | 1.25-1.30 |
Bulk density | (g/cm ³) | 2.34-2.35 |
Silica brick for coke oven | ||
Item: | CO-94A | CO-94B |
SiO2: % | ≥94 | ≥94 |
Al 2 O 3 : % | ≤ 1.5 | ≤ 1.5 |
Fe2O3: % | ≤ 1.5 | ≤ 1.5 |
Refractoriness under load 0.2Mpa | ≥ 1650ºC | ≥ 1650ºC |
Apparent porosity: % | ≤ 22 | ≤ 24 |
Bulk density: g/cm ³ | ≤ 2.34 | ≤ 2.35 |
Cold crushing strength: MPa | ≥30 | ≥25 |
Permanent linear change % (1450ºC ×2h) | 0~0.2 | 0~0.2 |
Thermal expansion(1000ºC) | ≤1.28 | ≤1.30 |
Silica brick for hot blast furnace | |
Item | HBF-95 |
SiO2 | ≥ 95 |
Al2O3 | ≤ 1.0 |
Fe2O3 | ≤1.3 |
Apparent porosity % | ≤22(24) |
Cold crushing strength MPa | ≥45(35) |
Remaining quarts % | ≤1.0 |
Refractoriness under load ºC | ≥1650 |
Creep(0.2Mpa ×1550ºC×50h) % | ≤0.8 |
Thermal expansion coefficient (1000ºC) % | ≤1.25 |
Apparent density g/cm ³ | ≤2.32 |
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