High alumina fire brick light weight insulation refractory brick
Featured with uniform structure, high crushing strength, low thermal conductivity, good high-temp. volume stability, high alumina insulating bricks are ideal products for application of service temp. below 1400°C, and widely used as inner lining or insulating layer in metallurgy, ceramic, petrochemical and machinery industries.
The following are technical specifications:
| Brand | PLG-1.3 | PLG-1.0 | PLG-0.9 | PLG-0.8 | PLG-0.7 | PLG-0.6 | PLG-0.5 |
| Bulk density, (g/cm3)≤ | 1.3 | 1.0 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 |
| Cold crushing strength, (MPa)≥ | 7.5 | 4.5 | 4.0 | 3.5 | 2.5 | 2.0 | 1.5 |
| Linear change on heating, ≤2% (°C×h) | 1400×12 | 1400×12 | 1400×12 | 1400×12 | 1350×12 | 1300×12 | 1250×12 |
| Thermal conductivity,(W/m.k) ≤ [350±25°C] | 0.38 | 0.35 | 0.32 | 0.28 | 0.25 | 0.22 | 0.19 |
| Al2O3(%)≥ | 48.0 | ||||||
| Fe 2O3(%)≤ | 1.5 | ||||||
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