Light Weight Heavy Duty Silica Brick Kiln Refractory Bricks SiO2 91%
Heavy Duty Silica Insulation Brick For Glass Melting Furnace And Ceramic Firing Kiln
Features
1. High refractoriness
2. Low thermal shock resistance
3. No pollution to glass liquid
4. Low bulk density
Applications
Light weight silica brick is mainly used to preserve heat in glass industry, iron&steel industry and ceramic furnace.
Physical properties and chemical composition
|
|
Item
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QG-0.8
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QG-1.0
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QG-1.1
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QG-1.15
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QG-1.2
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SiO2 %
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≥88
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≥91
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≥91
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≥91
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≥91
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Bulk Density g/cm3
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≤0.85
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≤1.00
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≤1.10
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≤1.15
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≤1.20
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Cold Crushing Strength Mpa
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≥1.0
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≥2.0
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≥3.0
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≥5.0
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≥5.0
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0.2Mpa Refractoriness Under Load T0.6 °C
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≥1400
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≥1420
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≥1460
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≥1500
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≥1520
|
|
Permanent Linear Change On Reheating(%)1450°CX2h
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0~+0.5
|
0~+0.5
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0~+0.5
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0~+0.5
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0~+0.5
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|
20-1000°C Thermal Expansich10-6/°C
|
1.3
|
1.3
|
1.3
|
1.3
|
1.3
|
|
Thermal Conductivity (W/MK) 350°C
|
0.55
|
0.55
|
0.60
|
0.65
|
0.70
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