Alumina Bubble Bricks

Alumina bubble bricks feature high service temperature and excellent thermal insulation performance. They achieve significant results in reducing furnace body weight, improving structural design, and saving materials and energy.

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Physical and Chemical Indicators

Item	LQZ99-1.4	LQZ99-1.6	LQZ99-1.8
Al2O3 %	≥ 99
SiO2 %	≤ 0.3
Fe2O3 %	≤ 0.2
Bulk Density (g/cm³)	1.3~1.5	1.5~1.7	1.7~1.9
Cold Crushing Strength (MPa)	≥ 6	≥ 10	≥ 12
Thermal Conductivity W/(m·K) (Hot Surface 1000℃)	≤ 0.9	≤ 1.1	≤ 1.2
Permanent Linear Change (%) 1600℃×3h	± 0.3

Physical and Chemical Indicators (LQZ95 Series)

Item	LQZ95-1.4	LQZ95-1.6	LQZ95-1.8
Al2O3 %	≥ 95
Fe2O3 %	≤ 0.2
Bulk Density (g/cm³)	1.3~1.5	1.5~1.7	1.7~1.9
Cold Crushing Strength (MPa)	≥ 8	≥ 12	≥ 16
Thermal Conductivity W/(m·K) (Hot Surface 1000℃)	≤ 0.9	≤ 1.1	≤ 1.2
Permanent Linear Change (%) 1600℃×3h	± 0.3

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