China Refractory Low Porosity Firebricks for Furnace, Find details about China Firebricks, Alumina Firebricks Price from Refractory Low Porosity Firebricks for Furnace
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-40 XN-40 KN-40 ZN-40 | DN-40 |
Al2O3, % min | 42 | 42 | 42 | 40 | 40 | 40 | 42 |
Fe2O3, % max | -- | 1.7 | -- | -- | -- | -- | -- |
Refractoriness (ºC) min | 1730 | 1750 | 1750 | 1710 | 1730 | 1710 | 1730 |
Refractoriness under load of 0.2Mpa(ºC) 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 - 0.5 1400ºCX 2h | 0 - 0.3 1450ºC X 2h | 0 - 0.4 1450ºCX 2h | +0.1 - 0.3 1350ºC X 2h | 0 - 0.3 1400ºC X 2h | 0 - 0.3 1350ºC X 2h (XN-40) | +0.1 - 0.3 1400ºC X 2h |
Cold crushing strength MPamin | 25 | 49.0 | 29.4 | -- | 34.3 | 19.6 (ZN-40) | 39 |