KELEI MATERIAL Co.,Ltd.

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Iron&Steel Industries
Aluminum Industries
Cement Industries
Garbage Disposal Industries
Power Generation Industries

Fireclay insulating refractory bricks

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Product Features:

Technical Properties Data:

Item	NG -1.5	NG -1.3	NG-1.0	NG-0.9	NG-0.8	NG-0.7	NG-0.6	NG-0.5	NG-0.4
Al2O3, %	≥65	≥65	≥65	≥50					≥48
Fe2O3,	≤0.9	≤0.9	≤0.9	≤1.0					≤1.2
Density, g/cm3	≤1.5	≤1.3	≤1.0	≤0.9	≤0.8	≤0.7	≤0.6	≤0.5	≤0.4
Cold Crushing Strength, kgf/cm2	≥60	≥40	≥30	≥25	≥25	≥20	≥15	≥12	≥10
Test temp. , C (Permanent Linear Change 0.5%)	1400	1350	1350	1300	1250	1250	1200	1150	1150
Thermal conductivity, W/m.k (average temp. 350±25 C )	≤0.70	≤0.60	≤0.50	≤0.40	≤0.35	≤0.35	≤0.25	≤0.25	≤0.20

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