Fire clay bricks LQFC
Chemical and Physical Properties LQFC --3 LQFC -3 LQFC--3
Spec Typical Spec Typical Spec Typical
Chemical
Analysis (%) Al2O3 38≤ 40 32≤ 35 31≤ 33
Fe2O3 2.5≥ 1.9 2.5≥ 2.0 2.5≥ 2.0
Refractoriness (SK) 34≤ 34 33≤ 33 32≤ 32
Bulk Density 2.00≤ 2.25 1.95≤ 2.20 1.90≤ 2.15
Apparent Porosity (%) 24≥ 19 24≥ 19 26≥ 19
Cold Crushing Strength 200≤ 400 200≤ 350 200≤ 350
(Kg/cm2)
Thermal Expansion (%) - 0.56 - 0.52 - 0.53
at 1000℃
Permanent Linear Change (%) - 0.5 - 0.5 - 1350℃
0.5
at 1400℃ × 2Hrs
Refractoriness under Load - 1,370 - 1,360 - 1,360
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