Lightweight High Alumina Bricks

Lightweight high alumina bricks feature high service temperature, low impurity content, excellent refractoriness, and good thermal insulation performance.

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Physical and Chemical Indicators

Item	LG-1.2	LG-1.0	LG-0.8	LG-0.7	LG-0.6	LG-0.5
Al₂O₃ %	≥ 48
Fe₂O₃ %	≤ 2
Bulk Density (g/cm³)	≤ 1.2	≤ 1.0	≤ 0.8	≤ 0.7	≤ 0.6	≤ 0.5
Cold Crushing Strength (MPa)	≥ 4.5	≥ 3.5	≥ 2.5	≥ 2.2	≥ 1.6	≥ 1.2
Permanent Linear Change (%)	1400℃×12h ≤ -2		1350℃×12h ≤ -2		1250℃×12h ≤ -2
Thermal Conductivity W/(m·K) 350±25℃	≤ 0.55	≤ 0.50	≤ 0.35	≤ 0.30	≤ 0.25	≤ 0.20

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