Grupo Rongsheng
Sillimanite refractory bricks are sillimanite mineral-based refractory bricks produced by the high-temperature sintering method or slurry casting method. La fabricación de ladrillos de silimanita tiene muy buen rendimiento a altas temperaturas.. La silimanita es un mineral refractario natural de alta calidad., Después de la calcinación a alta temperatura, sillimanite will transform into mullite and free SiO2. Los ladrillos de silimanita y los ladrillos de mullita tienen una mayor refractariedad bajo carga en comparación con los ladrillos de arcilla refractaria.. Los ladrillos de silimanita tienen una estructura densa., cuando se aplica en hornos de vidrio, El líquido de vidrio no tiende a formar burbujas.. Entonces, los ladrillos de silimanita son adecuados para alimentar botes., barriles de arcilla, antiguos bloques, y comederos.
Specification of sillimanite refractory brick
| Ladrillos de sillimanita | ||||
| Artículo/Índice | GXS-50 | GXS-60 | GXS-50 | |
| Composición química | Alabama2oh3 | ≥50 | ≥60 | ≥62 |
| SiO2 | ≤45 | ≤38 | ≤33 | |
| fe2oh3 | ≤1,2 | ≤1,0 | ≤1,0 | |
| Porosidad aparente (%) | ≤18 | ≤18 | ≤17 | |
| Densidad a Granel (g/cm3) | ≥2,4 | ≥2,5 | ≥2,55 | |
| Fuerza de aplastamiento en frío (MPA) | ≥45 | ≥50 | ≥60 | |
| Refractariedad bajo carga (0.2MPa T0.6℃) | ≥1550 | ≥1600 | ≥1650 | |
| Tasa de cambio lineal de recalentamiento (1500℃*2h %) | ±0,1 | ±0,1 | ±0,1 | |
| Resistencia al choque térmico (100℃ agua/veces) | ≥20 | ≥20 | ≥20 | |
| Expansión térmica reversible (1000℃ %) | 0.55 | 0.6 | 0.6 | |
| Equivalente de cono pirométrico (CAROLINA DEL SUR. SK) | 35 | 36 | 38 | |
| Solicitud | Arco del jinete | Superestructura de antechico | Superestructura de antechico | |
The raw material composition of sillimanite bricks
Sillimanite bricks are made of sillimanite, andalusite, and sintered mullite as the main raw materials, with some ultrafine powder and binder added, and are formed by high-pressure molding or vibration pressure molding, and fired in a tunnel kiln. The firing temperature is 1390~1400℃, and the heat preservation time is 10~16h. The proportion of sillimanite bricks: 30%~40% sillimanite, 35%~55% andalusite + mullite, 10%~15% special grade alumina, and 5%~10% raw clay.
Application of sillimanite refractory bricks
Sillimanite refractory bricks are mainly used for forming flow holes in glass tank kilns, blast furnace linings, furnace throats, and ceramic industrial kiln furniture.
Characteristics of sillimanite bricks
Densidad a Granel: The bulk density of sillimanite bricks is large, generally between 2.3-2.5g/cm’.
Refractory: The refractoriness of sillimanite bricks is high, generally between 1770-1830℃.
Load softening temperature: The load softening temperature of sillimanite bricks is generally between 1500-1650℃.
Thermal shock resistance: Sillimanite bricks have good thermal shock resistance and can withstand large temperature changes.
Corrosion resistance: Sillimanite bricks have good corrosion resistance and can withstand the erosion of various acidic and alkaline substances.
Rongsheng refractory brick manufacturer introduction
Rongsheng is a 20-year-old refractory material factory that can customize different types of refractory bricks for the kiln industry. Hot-selling products include high-alumina bricks, ladrillos de mullita, low-porosity clay bricks, acid-resistant bricks, etc.If you need related products, please contact us
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