Henan Rongsheng Xinwei New Materials Research Institute Co., Ltd
High Quality Industrial Refractory Material Manufacturer And Supplier
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Rongsheng Factory Supply Mullite Insulation Brick JM23 JM26 JM28 JM30 Insulating Firebrick
Description of Mullite Insulation Brick JM23 JM26 JM28 JM30
Mullite insulating bricks JM-23, JM-26, JM-28,JM-30 are a type of lightweight refractory material used for insulation.They can directly contact flames,have low thermnal conductivity,low thermal melting,low impurity content,and excellent refractoriness. These bricks exhibit properties such as high temperature resistance, good thermal shock stability,and low thermal conductivity.
Feature of Mullite Insulating Brick:
Product specification of JM23 JM26 JM28 JM30 Mullite Insulation Brick
| Item | Index | ||||
| JM23 | JM25 | JM26 | JM27 | ||
| Al2O3 % | ≥40 | ≥50 | ≥55 | ≥60 | |
| Fe2O3 % | ≤1.0 | ≤1.0 | ≤0.9 | ≤0.8 | |
| Apparent porosity % | ≤0.55 | ≤0.80 | ≤0.85 | ≤0.9 | |
| Cold Crush Strength MPa | ≥1.0 | ≥1.5 | ≥2.0 | ≥2.5 | |
| Permanent Linear Change Rate % | 1230℃×12h | 1350℃×12h | 1400℃×12h | 1450℃×12h | |
| -1.5~0.5 | |||||
| Thermal Conductivity W/(m·K) | 200±25℃ | ≤0.18 | ≤0.26 | ≤0.28 | ≤0.32 |
| 350±25℃ | ≤0.20 | ≤0.28 | ≤0.30 | ≤0.32 | |
| 600±25℃ | ≤0.22 | ≤0.30 | ≤0.33 | ≤0.36 | |
| 0.05MPa Refractoriness Under LoadT0.5 ℃ | ≥1080 | ≥1200 | ≥1250 | ≥1300 | |
| Item | Index | |||
| JM28 | JM30 | JM32 | ||
| Al2O3 % | ≥65 | ≥70 | ≥77 | |
| Fe2O3 % | ≤0.7 | ≤0.6 | ≤0.5 | |
| Apparent porosity % | ≤0.95 | ≤1.05 | ≤1.35 | |
| Cold Crush Strength MPa | ≥2.5 | ≥3.0 | ≥3.5 | |
| Permanent Linear Change Rate % | 1510℃×12h | 1620℃×12h | 1730℃×12h | |
| -1.5~0.5 | ||||
| Thermal Conductivity W/(m·K) | 200±25℃ | ≤0.35 | ≤0.42 | ≤0.56 |
| 350±25℃ | ≤0.37 | ≤0.44 | ≤0.60 | |
| 600±25℃ | ≤0.39 | ≤0.46 | ≤0.64 | |
| 0.05MPa Refractoriness Under Load T0.5 ℃ | ≥1360 | ≥1470 | ≥1570 | |