Insulating bricks
Lightweight mullite corundum brick,high aluminum brick,
lightweight clay brick, Lightweight brick has good insulation
performance and good thermal shock stability,widely Back
lining and hot working surface for the furnace.
| Physical and chemical index of Lightweight heat preservation brick | ||||||||||
| Properties | Products | |||||||||
| Mulite brick | lightweight high aluminum brick | lightweight clay brick | ||||||||
| KHM23 | KHM26 | KHM28 | KHM30 | LG-0.8 | LG-1.0 | N6-0.8 | NG-1.0 | NG-1.A | ||
| Chemical Composition（%） | Al2O3 | 43 | 50 | 64 | 70 | 60 | 60 | 38 | 38 | 38 |
| SiO2 | 52 | 45 | 33 | 27 | ||||||
| Fe2O3 | 1.0 | 0.9 | 0.7 | 1.5 | 2.0 | |||||
| Physical Properties | Bulk Density（g/cm3） | 0.6 | 0.8 | 0.9 | 1.0 | 0.8 | 1.0 | 0.8 | 0.1 | 1.3 |
| Thermal conductivity W/M·K | 0.30 | 0.35 | 0.40 | 0.45 | 0.35 | 0.50 | 0.35 | 0.50 | 0.60 | |
| Cold crushing strength（MPa） | 1 | 2 | 3 | 3 | 3 | 4 | 3 | 3 | 4 | |
| Max service temperature | 1250 | 1400 | 1500 | 1600 | 1400 | 1400 | 1100 | 1200 | 1200 | |
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