High Strength Abrasion Resistant Castable

High Strength Abrasion Resistant Castable

High temperature abrasion resistance;
High crushing strength;
High modulus of rupture;
Good slag corrosion resistance;
Scouring resistance;
Good volume stability.


High strength abrasion resistant castable is mainly used as the working lining of high temperature cyclone separator, circulating fluidized bed and as the tapping spout lining of heating furnace. The modulus of rupture and crushing strength of this kind of castable are very high, that’s why it is called high strength refractory castable. Wear Resistant Castable is unshaped refractory, which can resist high temperature solid material or solid powder containing airflow abrasion or fluxing.

  Technical Data:

Item NM-1 NM-2 NM-3 NM-4
Al2O3 % ≥ 70 75 80 85
CaO % ≤ 2.5 2.5 2.5 2.5
Bulk density g/cm3  > 2.6 2.75 2.8 2.9
Crushing strength Mpa(1400℃, 3h) >90 >95 >105 >110
Modulus of rupture Mpa(1400℃, 3h) >13.0 >13.5 >15.0 >16.0
Room temperature abrasion loss cm3 <9.6 <8.5 <7.3 <6
0.2MPa, refractoriness under load beginning temperature ℃ >1450 >1490 >1530 >1560
Thermal shock resistance(900℃, water cooling)/times >20 >20 >20 >20
Max. working temperature ℃ 1550 1550 1600 1600
Reheating linear change rate % <-0.3 <-0.3 <-0.2 <-0.2


High strength abrasion resistant castable is widely used in CFB boiler, power plant boiler, industrial boier, thermal furnaces and kilns, etc.. It is the most effective anti-abrasion refractory material used in CFB boilers.


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