Introduction
Hot blast stove clay bricks are premium refractory products manufactured from high-purity refractory clays with strict quality control. These bricks are designed to withstand the severe thermal cycling and mechanical stresses typical of hot blast stove operations. The products exhibit excellent thermal shock resistance, high load softening temperature, and minimal creep deformation under sustained high-temperature loads. They are widely used in checker chambers, regenerators, and partition walls where structural integrity and thermal efficiency are critical.
Key Advantages
01
Superior Thermal Shock Resistance
Withstands rapid temperature fluctuations during cyclic hot blast stove operations, preventing cracking and spalling in thermal shock-prone zones.
02
High Load Softening Temperature
Achieves refractoriness under load ≥1400℃ (RN-42 grade), maintaining dimensional stability under heavy mechanical loads at elevated temperatures.
03
Low Creep Deformation
Low creep series (DRN-125/120/115) deliver creep rate ≤0.8% under 0.2MPa×50h, ensuring long-term structural integrity in high-temperature zones.
Specification
| Item | Standard Type | Low-Creep Series | ||
| JH-RN-42 | JH-DRN-125 | JH-DRN-120 | JH-DRN-115 | |
| Al₂O₃(%)；≥ | 42 | 45 | 42 | 40 |
| 0.2MPa Load Softening Start Temp (°C): ≥ | 1410 | – | – | – |
| Compressive Creep Rate (%) (0.2MPa×50h) | – | 1250℃ 0.8 | 1200℃ 0.8 | 1150℃ 0.8 |
| Permanent Linear Change (%) | 1400℃×2h -0.4~0 | 1400℃×2h -0.3~+0.1 | 1350℃×2h -0.3~+0.1 | 1300℃×2h -0.4~+0.1 |
| Bulk Density (g/cm³) | 2.00-2.20 | 2.15-2.35 | 2.00-2.20 | 2.00-2.20 |
| Apparent Porosity (%): ≤ | 22(24) | 22(24) | 22(24) | 22(24) |
| Cold Crushing Strength (MPa): ≥ | 35.0 | 40.0 | 35.0 | 30.0 |
Note: Values in ( ) indicate specifications for shaped bricks
Packaging: Wooden pallet
Precautions: Waterproof and shockproof
