Fireclay bricks
DKJL CO., LTD. [China] 
The main applications of fireclay brick are the low temperature parts such as blast furnaces and hot blast furnaces
| Item | General clay firebricks | Firebricks for blast furnace | Firebricks for hot-blast stove | Firebricks for pouring | Firebricks for the lining of temming ladle | Firebricks for steel pouring | Low pore firebricks |
| Brand | N-2a | GN-42 | RN-42 | JZN-40 | CN-40 | SN-40XN-40 KN-40 ZN-40 | DN-40 |
| Al2O3, % min | 42 | 42 | 42 | 40 | 40 | 40 | 42 |
| Fe2O3, % max | -- | 1.7 | -- | -- | -- | -- | -- |
| Refractoriness() min | 1730 | 1750 | 1750 | 1710 | 1730 | 1710 | 1730 |
| Refractoriness under load of 0.2Mpa() min | 1350 | 1430 | 1400 | -- | 1400 | 1370(SN-40, KN-40) | 1390 |
| Apparent porosity, % max | 24 | 16 | 24 | 17-25 | 19 | 15-23 (SN-40)22 (KN-40)15-25(XN-40)23(ZN-40) | 15 |
| Linear change on reburning, % | +0.1 -0.51400X 2h | 0 -0.31450 X 2h | 0 -0.41450X 2h | +0.1-0.3 1350 X 2h | 0 -0.31400 X 2h | 0 -0.31350 X 2h (XN-40) | +0.1 -0.31400 X 2h |
| Cold crushing strength MPa min | 25 | 49.0 | 29.4 | -- | 34.3 | 19.6(ZN-40) | 39 |
Clay bricks use Chamotte that the fire clay is calcinated as the main material. These bricks consist of fire clay and binder. The chemical components of these bricks are SiO2 and Al2O3.
Fireclay bricks
