Excellent high temperature mechanical properties
Chemical resistance
Thermal shock stability is more excellent
Special-shaped high-alumina bricks can be customized
High Alumina Bricks For Steelmaking Electric Furnace Roof
Description
High alumina bricks for steelmaking electric furnace roof are made of bauxite clinker as the main raw material, formed by high pressure and sintered at high temperature. The main mineral composition is corundum and mullite phase, which has good high temperature mechanical properties and chemical corrosion resistance. Especially for unfired products, the dimensions are more accurate and the thermal shock stability is better.
Specification
| Project | ||||
|---|---|---|---|---|
| Al2O3 (%) | ≥80 | ≥75 | ≥80 | ≥75 |
| Refractoriness (℃) | – | – | ≥1780 | ≥1780 |
| 0.2MPa load softening start temperature (℃) | ≥1530 | ≥1520 | ≥1530 | ≥1520 |
| Reburning line change (1500℃×2h) (%) | 0.2~-0.4 | – | – | – |
| Apparent porosity Furnace roof brick | ≤19 | ≤18 | ||
| Arch brick | ≤21 | ≤20 | ||
| Normal temperature compressive strength (MPa) | ≥75 | ≥65 | ≥60 | ≥55 |
| Thermal shock resistance (1100℃, water cooling) times | ≥provide data | ≥8 |
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