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Chinese Refractory raw material resources are abundant, which are suitable for the production of various grades of insulating firebrick. Limiting temperature of use range from 900°C to 1650°C.Each grade of insulating firebrick is formulated to meet specific thermal and physical requirements
Items
| Testing Temperature | Volume Density g/cm3 | Pressure Strength Mpa | Thermal Conductivity kcal/mh (350) | |
A | A-1 | 900 | ≤0.50 | ≥0.50 | ≤0.13 |
A-2 | 1000 | ≤0.50 | ≥0.50 | ≤0.14 | |
A-3 | 1100 | ≤0.50 | ≥0.50 | ≤0.15 | |
A-4 | 1200 | ≤0.55 | ≥0.80 | ≤0.16 | |
A-5 | 1300 | ≤0.60 | ≥0.80 | ≤0.17 | |
A-6 | 1400 | ≤0.70 | ≥1.00 | ≤0.20 | |
A-7 | 1500 | ≤0.75 | ≥1.00 | ≤0.22 | |
B | B-1 | 900 | ≤0.70 | ≥2.50 | ≤0.17 |
B-2 | 1000 | ≤0.70 | ≥2.50 | ≤0.18 | |
B-3 | 1100 | ≤0.75 | ≥2.50 | ≤0.20 | |
B-4 | 1200 | ≤0.80 | ≥2.50 | ≤0.22 | |
B-5 | 1300 | ≤0.80 | ≥2.50 | ≤0.23 | |
B-6 | 1400 | ≤0.90 | ≥3.00 | ≤0.27 | |
B-7 | 1500 | ≤1.00 | ≥3.00 | ≤0.31 | |
C | C-1 | 1300 | ≤1.10 | ≥5.00 | ≤0.30 |
C-2 | 1400 | ≤1.20 | ≥7.00 | ≤0.38 | |
C-3 | 1500 | ≤1.25 | ≥10.00 | ≤0.45 | |
Main property
| Classify temperature
| Apparent density
kg/m3 | Chemical component Wgt % | Bending strength
Mpa | Cold crushing strength
Mpa | |||
Al2O3 % | SiO2 % | Fe2O3 % | K2 O + Na2O % | |||||
JM23 | 1260 | 480 | 37.00 | 44.40 | 0.70 | 1.10 | 1.00 | 1.20 |
JM26 | 1430 | 800 | 58.00 | 39.10 | 0.70 | 1.70 | 1.50 | 1.60 |
JM28 | 1540 | 890 | 67.10 | 31.00 | 0.60 | 0.90 | 1.80 | 2.10 |
JM30 | 1650 | 1020 | 73.40 | 25.10 | 0.50 | 0.90 | 2.10 | 2.20 |
Insulating brick