Introduction
Pyrophyllite bricks are semi-silica refractory products manufactured from natural pyrophyllite ore through rationalized batching, high-pressure pressing and high-temperature sintering. The material exhibits low thermal conductivity, reducing heat loss and effectively decreasing ladle weight. At high temperatures, pyrophyllite bricks show slight expansion which improves the integrity and sealing of the lining. Grade JH-YLS features Al₂O₃ ≤23% and SiO₂ ≥73% with bulk density ≥2.1 g/cm³. Widely used for ladle permanent linings, working linings, casting ladles, coke ovens and furnace flues.
Key Advantages
01
Low Thermal Conductivity
Thermal conductivity of approximately 1.0 W/(m·k) at 1000℃ minimizes heat loss and reduces ladle weight, improving energy efficiency.
02
Slight Expansion at High Temperatures
Expands slightly during service, enhancing the overall integrity and sealing of the lining to prevent slag penetration along joints.
03
Good Acid Slag Resistance
Forms a protective glassy layer when in contact with molten slag, preventing further penetration and extending service life.
Specification
| 项目 | JH-YLS | |
|---|---|---|
| Al₂O₃ (%) | ≤23 | |
| SiO₂ (%) | ≥73 | |
| Fe₂O₃ (%) | ≤1.8 | |
| 体积密度 (g/cm³) | ≥2.1 | |
| 显气孔率 (%) | ≤18 | |
| 常温耐压强度 (MPa) | ≥25 |
