Physical and chemical indexes of products
Refractory materials with different indicators can be customized according to demand. Call 400-188-3352 for detailsMullite insulating bricks have high fire resistance, can directly contact with the flame, and are characterized by light weight, high strength, low thermal conductivity, good thermal shock resistance, and remarkable energy saving effect.| Project | Target | |||||||
| JM23 | JM25 | JM26 | JM27 | JM28 | JM30 | JM32 | ||
| Al2O3 % | ≥40 | ≥50 | ≥55 | ≥60 | ≥65 | ≥70 | ≥77 | |
| Fe2O3 % | ≤1.0 | ≤1.0 | ≤0.9 | ≤0.8 | ≤0.7 | ≤0.6 | ≤0.5 | |
| Bulk density g/cm3 | ≤0.55 | ≤0.80 | ≤0.85 | ≤0.9 | ≤0.95 | ≤1.05 | ≤1.35 | |
| Normal temperature compressive strength MPa | ≥1.0 | ≥1.5 | ≥2.0 | ≥2.5 | ≥2.5 | ≥3.0 | ≥3.5 | |
| Heating permanent line change % | 1230℃×12h | 1350℃×12h | 1400℃×12h | 1450℃×12h | 1510℃×12h | 1620℃×12h | 1730℃×12h | |
| -1.5~0.5 | ||||||||
| Thermal conductivity W/(m·K) | 200±25℃ | ≤0.18 | ≤0.26 | ≤0.28 | ≤0.32 | ≤0.35 | ≤0.42 | ≤0.56 |
| 350±25℃ | ≤0.20 | ≤0.28 | ≤0.30 | ≤0.32 | ≤0.37 | ≤0.44 | ≤0.60 | |
| 600±25℃ | ≤0.22 | ≤0.30 | ≤0.33 | ≤0.36 | ≤0.39 | ≤0.46 | ≤0.64 | |
| 0.05MPa Load softening temperature T0.5 ℃ | ≥1080 | ≥1200 | ≥1250 | ≥1300 | ≥1360 | ≥1470 | ≥1570 | |
