Lightweight Silica Bricks

Lightweight silica bricks feature low thermal conductivity, stable volume, high refractoriness under load, and high service temperature.

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Physical and Chemical Indicators

Item	GGR1.0	GGR1.1	GGR1.15	GGR1.2
SiO₂ %	≥ 91
Bulk Density (g/cm³)	≥ 1.0	≥ 1.1	≥ 1.15	≥ 1.2
Cold Crushing Strength (MPa)	≥ 2.0	≥ 3.0	≥ 5.0	≥ 5.0
0.1MPa Refractoriness Under Load (℃)	≥ 1400	≥ 1420	≥ 1500	≥ 1520
Permanent Linear Change (%)	1450℃×2h ≤ 0.5		1550℃×2h ≤ 0.5
Thermal Conductivity W/(m·K) 350±25℃	≤ 0.55	≤ 0.60	≤ 0.65	≤ 0.70

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