Light Weight Heavy Duty Silica Brick Kiln Refractory Bricks SiO2 91%

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Detailed Product Description
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	QG-0.8	QG-1.0	QG-1.1	QG-1.15	QG-1.2
SiO2 %	≥88	≥91	≥91	≥91	≥91
Bulk Density g/cm3	≤0.85	≤1.00	≤1.10	≤1.15	≤1.20
Cold Crushing Strength Mpa	≥1.0	≥2.0	≥3.0	≥5.0	≥5.0
0.2Mpa Refractoriness Under Load T0.6 °C	≥1400	≥1420	≥1460	≥1500	≥1520
Permanent Linear Change On Reheating(%)1450°CX2h	0~+0.5	0~+0.5	0~+0.5	0~+0.5	0~+0.5
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