Silica Refractory Bricks for Coke Oven

Floor & wall bricks

Other bricks

SiO₂ % ≥

94.5

94.5

Al₂O₃ % ≤

1.5

1.5

Fe₂O₃ % ≤

1.5

1.5

CaO % ≤

2.5

2.5

Refractoriness under load ℃ 0.2 Mpa≥

1650

1650

Cold crushing strength Mpa ≥

40

35

Apparent porosity % ≤

22

24

true density g/cm³ ≤

2.33

2.34

Thermal expansion 1000℃ % ≤

1.28

1.30

Residual quartz % ≤

1.0

1.0

Permanent linear change 1450℃ 2h %

0–0.2

0–0.2