Andalusite brick

Chemical composition

Al₂O₃  %

≥58

55-60

Fe₂O₃ %       ≤

1.5

1.2

CaO+MgO %  ≤

0.7

0.4

Na₂O+K₂O %  ≤

0.8

0.5

Bulk density g/cm³  ≥

2.45

2.25

Apparent porosity %≤

20

18

CCS Mpa          ≥

50

60

0.2Mpa RUL T0.6 ℃≥

1600

1600

 Creep rate 1280℃，25h, 0.2Mpa             %      ≤

0.4

0.2

MOR Mpa ≥

1200℃

--

12

1350℃

6

6

20-1000℃    Thermal expansion %        ≤

0.7

0.6

Refractoriness ℃    ≥

-

1790

P.L.C 1500℃*2h

-

-0.1－+0.1

T.S.R 1100℃ water cooling -cycle             ≥

-

35