Lightweight mullite bricks are refractory products made from a combination of alumina and silica, with a low bulk density and high porosity. They have excellent thermal insulation properties, good mechanical strength, and resistance to thermal shock. Lightweight mullite bricks are commonly used for lining furnaces, kilns, and other high-temperature equipment in industries such as metallurgy, ceramics, and petrochemicals.
| Application | Ceramic Kiln, Non-ferrous metals, Other Kiln, Steel Kiln |
|---|---|
| Raw Material | Al₂O₃, Fe₂O₃ |
| Refractoriness (℃) | 1260, 1430, 1540, 1650, 1760 |
| Size (mm) | 230*114*65mm, 230*114*75mm, As your requirements |
| Capacity | |
| Package | Stretch film + corner protectors + straps + trays |
Lightweight mullite bricks are made of high-purity refractory powder as raw materials, made by high-temperature sintering after a unique process and ratio. They are made of lightweight refractory bricks with a mullite phase, and the aluminium content is between 35% and 80%. The advantages are high purity, low impurity content, high-temperature resistance, direct contact with flames, corrosion resistance in various atmospheres, low thermal conductivity, low thermal melting, high strength, excellent thermal shock resistance, high dimensional accuracy, and can be cut at will and widely used in ceramic roller kiln, shuttle kiln, hot blast stove and various electric furnace lining, furnace door brick, kiln car brick, heat preservation, high-temperature rotary kiln, tunnel kiln, hot blast stove top, blast furnace body and bottom, glass kiln regenerator, petroleum cracking system furnace lining, etc.
| Item | JM-23 | JM-26 | JM-28 | JM-30 | JM-32 | |
| Classification Temperature（℃） | 1260 | 1430 | 1540 | 1650 | 1760 | |
| Bulk Density（g/cm3） ≥ | 0.6~1.0 | 0.6~1.0 | 0.8~1.0 | 1.0~1.2 | 1.0~1.2 | |
| Modulus of Rupture（MPa） ≥ | 2 | 2 | 2 | 2 | 4 | |
| Cold Crushing Strength（MPa） ≥ | 1 | 2 | 2 | 3 | 3 | |
| ≤1% ℃×12h Permanent Linear Change ≤1% | 1250 | 1400 | 1500 | 1600 | 1700 | |
| Thermal Conductivit（W/m.k) | 350℃ | 0.20 | 0.26 | 0.30 | 0.35 | 0.48 |
| 400℃ | 0.22 | 0.28 | 0.32 | 0.38 | 0.50 | |
| 600℃ | 0.25 | 0.32 | 0.37 | 0.42 | 0.50 | |
| Al2O3（%） ≥ | 37 | 56 | 67 | 72 | 77 | |
| Fe2O3（%） ≤ | 0.7 | 0.7 | 0.6 | 0.5 | 0.5 | |
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