Blast furnace cordierite-mullite combined fire brick

1).Lower thermal expansion 2).Fine thermal shock stability 3). Long-working life,no sudden rupture 4).No oxide, no peel slag

Blast furnace cordierite-mullite combined fire brick

1.Featurs:

  1).Lower thermal expansion   2).Fine thermal shock stability   3). Long-working life,no sudden rupture    4).No oxide, no peel slag

2.Chemical and physical properties:

    Standard: China National Standard: YB/T 4128-200

Item	Index
	RT-A
ω(Al2O3)/%                    ≥	46
ω(Fe2O3)/%                    ≤	2
ω(MgO)/%                    ≤	3
ω(Na2O+K2O)/%                  ≤	1.5
Apparent Porosity,%           ≤	25
Bulk density,g/cm3              ≥	2.15
Cold compressive strength Mpa   ≥	40
Refractoriness under load at 0.2MPa (T0.6)/°C            ≥	1420
Permanent Linear change rate /%	±0.2(1350°C×2h)
Thermal shock stability (1100°C cold water ), Times   ≥	40

3.Application:

   Mainly used in the Dome combined fire brick in the hot blast furnace in the steel-making industry thermal industry equipment.

 

Blast furnace cordierite-mullite combined fire brick