High alumina brick for hot blast stove

Item:

RL65

RL55

RL48

AL₂O₃(%)  ≥

65

55

48

Refractoriness (^oC) ≥

1780

1760

1740

0.2Mpa Refractoriness under load (^oC)≥

1500

1470

1420

Permanent linear change (1500^oC×2h)(%)

-0.4~0.1

-0.4~0.1

-0.4~0.1

Apparent porosity (%) ≤

22

Cold crushing strength (MPa)

50

45

40

Thermal shock resistance (times) (1100 water cooling)

≥6