 
 
          Mullite insulation brick is a new type of refractory material, which can directly contact with fire, characterized with high temperature resistance, lightweight, low thermal conductivity, good energy saving effect, specially suitable for cracking furnace, hot blast furnace, ceramic roller kiln, porcelain kiln extraction, glass crucible and various electric furnaces as lining. It is an ideal product of energy efficiency and longevity.
CCEWOOL® DJM series mullite insulating brick, using high pure mullite as raw material, is made by adding alumina powder according to different type and then sintering in high temperature, manufacturing as per ASTM&JIS standard. Classified by working temperature, there are DJM-20, DJM-23, DJM-26, DJM-28, DJM30 and DJM32 .
Characterized with high compressive strength, thermal shock stability, low thermal conductivity. It can be widely used in industries such as metallurgy, petrochemical, machinery, ceramics and so on. It is an ideal product for longevity energy saving and efficiency enhancement. According to user’s requirements, we can add wood flour and polystyrene ball to produce light-mullite insulation brick.
| CCEWOOL ® DJM series mullite insulating brick | ||||||||
| Item | DJM20 | DJM-23 | DJM-24 | DJM-26 | DJM-28 | DJM-30 | DJM-32 | |
| Classification Temp(℃) | 1200 | 1260 | 1300 | 1430 | 1540 | 1650 | 1760 | |
| Bulk Density(g/cm3) | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1 | 1.25 | |
| Crushing Strength(MPa) | 1.1 | 1.2 | 1.4 | 1.6 | 2.1 | 2.5 | 3.5 | |
| Modulus of Rupture(MPa) | 1.0 | 0.9 | 1.2 | 1.4 | 1.6 | 2.1 | 2.1 | |
| Permanent linear change (CT-30℃x24h)% | 0.5 | 0.5 | 0.6 | 0.4 | 0.5 | 0.9 | 0.9 | |
| Reversible thermal expansion at 1100℃ | 0.5 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.1 | |
| Thermal conductivity (W/m.k) | 400 ℃ | 0.12 | 0.12 | 0.14 | 0.27 | 0.32 | 0.41 | 0.49 | 
| 600 ℃ | 0.14 | 0.14 | 0.16 | 0.29 | 0.34 | 0.43 | 0.5 | |
| 800 ℃ | 0.16 | 0.17 | 0.18 | 0.31 | 0.36 | 0.44 | 0.51 | |
| 1000 ℃ | 0.18 | 0.19 | 0.2 | 0.33 | 0.38 | 0.45 | 0.53 | |
| 1200 ℃ | - | - | - | 0.3 | 0.41 | 0.47 | 0.56 | |
| Chemical Analysis(%) | Al2O3 | 37 | 37 | 44.5 | 58 | 67 | 73 | 77 | 
| Si02 | 47 | 44.4 | 41.2 | 39.1 | 31 | 25.1 | 21.5 | |
| Fe2O3 | 0.7 | 0.7 | 0.7 | 0.7 | 0.6 | 0.5 | 0.4 | |
| Common size of insulation brick | 230x114x65/75mm or customized size | |||||||