Sillimanite Refractory Bricks are manufactured with main raw material of sillimanite. Sillimanite is a kind of quality refractory raw materials and is used to produce high-alumina brick with low creep, high refractoriness under load, high heat shock and micro-expansive, and furnace top. Sillimanite can be transformed into mullite and free silicon dioxide through high temperature firing. Generally adopt high temperature firing method and slurry casting to manufacture. Its physical and chemical property is better than high alumina bricks. Its refractoriness is 1770~1830 ℃ and apparent initial softening temperature is 1500~1650℃. Sillimanite brick is mainly used for molding of throat in glass furnace, furnace lining and furnace throat of blast furnace, and kiln furniture in ceramic industry.
| SILLIMANITE BRICKS SPECIFICATION | ||||||||
|---|---|---|---|---|---|---|---|---|
| QUALITY | CHEMICAL ANALYSIS |
PHYSICAL PROPERTIES | THERMAL,PROPERTIES | |||||
| Parameters | Al2O3 Min (%) |
Fe2O3 Max (%) |
A.P. Max (%) |
B.D. Avg (g/cc) |
C.C.S. Min (kg/cm2) |
P.C.E. Min Ort/°C |
RUL Min (ta°C) |
PLC Max (%)/°C |
| PC SILLIMANITE | 58 | 1.5 | 20-21 | 2.32 | 500 | +34/+1763 | 1450 | 1.5/1450 |
1. Size Tolerance: + / - 1.5 % or + / -2 mm whichever is greater.
2. Above specified values relate to machine pressed standard bricks.
3. P L C values are for specimens heated at given temp. For 2 Hours.
