Zhengzhou Huachen Refractory hcrefractory。com / sale01 a hcrefractory。com
The mullite insulating brick is an insulating refractory product made of mullite as a main raw material. The mullite insulating brick is resistant to high temperature, high strength, low thermal conductivity, and can directly the flame. It is suitable for the lining of various industrial furnaces.
The refractoriness of mullite insulating bricks can reach above 1790 °C. Load softening start temperature 1600-1700 ° C, normal temperature compressive strength 70-260MPa, good thermal shock resistance, high strength, low temperature creep rate, low expansion coefficient, low thermal coefficient, acid slag corrosion. The utility model can greatly reduce the weight of the high temperature furnace body, reform the structure, save materials, save energy and improve production efficiency.
| HCR Brand | Classification Temperature | Bulk Density | Cold Crushing Strength | Permanent ange On Reheating | Thermal Expansion | Thermal Conductivity | Al2O3 | Fe2O3 | |||
| 400℃ | 600℃ | 800℃ | 1000 ℃ | ||||||||
| ℃ | g/cm³ | Mpa | %CT-30℃ | 1000℃ % | W/m.k | % | ≤% | ||||
| JM 23 | 1260 | 0.8 | 1.2 | 1230℃ -0.5 | 0.5 | 0.14 | 0.16 | 0.18 | 0.20 | 37 | 1.0 |
| JM 26 | 1430 | 0.8-1.0 | 1.6 | 1400℃ -0.5 | 0.7 | 0.27 | 0.29 | 0.31 | 0.33 | 58 | 1.0 |
| JM 28 | 1540 | 0.8-1.0 | 2.1 | 1510℃ -0.5 | 0.8 | 0.32 | 0.34 | 0.36 | 0.38 | 67 | 0.8 |
| JM 30 | 1650 | 1.0 | 2.5 | 1620℃ -0.9 | 0.9 | 0.41 | 0.43 | 0.44 | 0.45 | 73 | 0.6 |
| JM 32 | 1760 | 1.2 | 3.5 | 1730℃ -0.9 | 1.1 | 0.49 | 0.50 | 0.51 | 0.53 | 77 | 0.5
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