PRECAST REFRACTORIES
PRECAST REFRACTORIES
PALA is a product manufactured by a high-speed vibration molding method, which results in a very dense structure with high mechanical strength. It can form complex shapes or large blocks, and has excellent resistance to wear, corrosion, and spalling. PALA is widely used in various applications such as blast furnace tap holes, electric furnace ceilings, glass-melting furnace floors, ladle bottoms, ski rails, burner tiles, and non-ferrous metal melting furnaces.
In particular, PALA can be manufactured in a suitable form for large-scale production or assembly regardless of its shape and size, thus significantly reducing manpower and time for refractory processing. It is also a solution to the weaknesses of conventional refractory materials such as minimizing the joints in brickwork and resolving defects that may occur during the initial heating stage in unshaped refractory materials.
Item\Product | PALA-97 | PALA-95 | PALA-S85 | PALA-85 | PALA-75 | PALA-55 | |
---|---|---|---|---|---|---|---|
Refractoriness(SK) | 40 | 40 | - | 39 | 38 | 35 | |
Bulk density | 3.10 | 3.00 | 3.00 | 2.80 | 2.55 | 2.30 | |
Apparent porosity(%) | 13.0 | 13.0 | 17.0 | 18.0 | 17.0 | 15.0 | |
Cold Crushing Strength(N/㎟) | 800 | 700 | 700 | 700 | 700 | 600 | |
Chemical analysis temperature(2kg/㎠, T2℃) | 1650 | 1650 | 1650 | 1450 | 1500 | 1450 | |
Residual linear expansion rate (%)(1500℃ × 2hr) |
0 | 0 | 0 | 0 | 0 | 0 | |
High-temperature linear expansion rate (10%)(1000℃) |
0.7 | 0.7 | 0.5 | 0.5 | 0.4 | 0.5 | |
Chemical Composition(%) | Al₂O₃ | 97 | 95 | 85 | 83 | 75 | 75 |
Fe₂O₃ | 0.5 | 0.5 | SIC 10.0 | 1.3 | 0.8 | 1.5 | |
Main applications | ·Steel-making: Delta, Section, Electric Arc Furnace Roof, Nozzle Seat, Ladle, Tundish, Bubbling Cone Seat, Non-ferrous Metal Melting, Liffer Brich, Burner Tile, Nose Ring, Skid Rail. | Tundish Lining, Reheating Furnace Bottom, Ladle, and Other Refractory for Steelmaking |