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Brief introduction of high alumina insulating bricks
High alumina thermal insulation fire bricks are produced by light burning method with blast furnace burden as the main raw material and appropriate additives. The product has the advantages of high strength, good thermal stability, little change in re burning fiber, small thermal conductivity, and significant energy-saving effect.
Features of high alumina insulating bricks
High alumina thermal insulation fire bricks have the characteristics of high temperature strength, corrosion resistance to various atmospheres, excellent thermal shock stability, good heat insulation, and significant energy saving effect.
Application of high alumina insulating bricks
High alumina thermal insulation fire bricks are widely used in metallurgy, machinery, ceramics, chemical industry and other industries as furnace lining (not subject to corrosion of solution) and insulation layer. It is an ideal energy-saving product. Its operating temperature is below 1350 ° C, and it can directly contact the flame.
Parameters of high alumina insulating bricks
| Item | LG-1.0 | LG-0.9 | LG-0.8 | LG-0.7 | LG-0.6 |
| Al2O3 | ≥48 | ≥48 | ≥48 | ≥48 | ≥48 |
| Fe2O3 | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 | ≤2.0 |
| Bulk Density (g/cm3) | ≤1 | ≤0.9 | ≤0.8 | ≤0.7 | ≤0.6 |
| Cold Crushing strength (Mpa) | ≥3.92 | ≥3.43 | ≥2.94 | ≥2.45 | ≥1.96 |
| Thermal Conductivity Coefficient (W/mk) | ≤0.45 | ≤0.45 | ≤0.35 | ≤0.35 | ≤0.3 |
| Permanent Linear Change Rate (max 2%) (℃) | 1400 | 1400 | 1400 | 1350 | 1350 |
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