Our lower porosity clay bricks are the whole specification wide in variety.The main products are as follows :three low clay brick(DDD), lower porosity clay brick (DN-12,DN-15) and common clay brick(N-1,N-2a).
They are widely used in the glass furnace,blast furnace ,hot-air furnace,cement furnace,chemical furnace and other heat-engineering equipments.
| Products/Index | Code | Al2O3 ≥ | Fe2O3≤ |
Creep rate 0.2Mpa
1200°C×50h≤
|
Bulk Density≥ | Apparent porosity ≤ | Cold crushing strength ≥ | Refractoriness under load(0.2MPa) |
| Unit | % | g/cm3 | % | MPa |
°C
|
|||
| Three low clay brick | DDD | 46 | 1.1 | 0.1 | 2.40 | 11 | 70 | 1520 |
| Lower porosity clay brick | DN-12 | 45 | 1.2 | 2.37 | 12 | 68 | 1500 | |
| DN-15 | 42 | 1.5 | 2.3 | 15 | 58.8 | 1470 | ||
| Common clay brick | N-1 | 38 | 2.5 | 2.15 | 22 | 30 | 1400 | |
| N-2a | 35 | 3.0 | 2.10 | 24 | 25 | 1350 | ||
| Spalling resistance clay brick | DN-18 | 40 | 2.0 | 2.25 | 18 | 45 | 1430 | |
| Blast furnace bricks | ZNG-42 | 42 | 1.6 | 2.30 | 15 | 59 | 1450 | |
| GN-42 | 42 | 1.7 | 2.28 | 16 | 49 | 1430 | ||