High Alumina Brick for Steel Making
| items | DL-80 | DL-75 | BDL-80 | BDL-75 | BDL-83 | BDL-85 |
| Al2O3 % ≥ | 80 | 75 | 80 | 75 | 83 | 85 |
| Fe2O3% ≤ | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
| Apparent porosity % ≤ | 19(21) | 19(21) | 18(20) | 18(20) | 17(19) | 17(19) |
| Bulk density g/cm³ ≥ | 2.7 | 2.6 | 2.8 | 2.7 | 2.85 | 2.9 |
| Cold crushing strength Mpa ≥ | 70 | 60 | 60 | 55 | 70 | 80 |
| Refractoriness under load ºC | 1540 | 1520 | 1550 | 1530 | 1550 | 1560 |
| P.L.C % | ±0.2 | ±0.4 | ±0.2 | ±0.4 | ±0.2 | ±0.2 |
The product features: high alumina bricks for steel making is made from special grade of bauxite as main raw material, added with little amount of white fused alumina and a alumina powder, shaped by high pressure and sintered at high temperature. The main mineral constituent includes mullite and corundum, with excellent high temperature physical performance and chemical erosion resistance
