ITEM

INDEX

Fireclay Refractory Pouring Material

NL-70

NL-60

NN-45

AL2O3 ,% ≥

70

60

45

CaO,% ≤  

-

-

-

Refractoriness，℃≥

1760

1720

1700

Linear Change after heating≤+1%Experiment temperature（heat preservation3h）, ℃

1450

1400

1350

110+5 ℃

Dry empress

Cold crushing strength

MPa≥

10

9

8

Modulus of rupture MPa≥

2

1.5

1