Refractory Silica Brick for Coke Oven Furnace

General silica brick:Siliceous refractory products used for various large coke oven, glass kiln stove, hot air stove, etc.

Item

GZ-96

GZ-95

GZ-94

SiO2 % ≥

96

95

94

Fe2O3 % ≤

1.0

1.2

1.4

Refractoriness °C≥

1710

1710

1690

Apparent porosity % ≤

22

22

24

Cold crushing strength Mpa  ≥

29.4

24.5

19.6

Refractoriness under load, 0.2MPa, °C≥

1660

1650

1640

True density g/cm3 ≤

2.34

2.35

2.35

Silica brick for Hot-blast stove

Item

Dome wall brick

Checker

SiO2   % ≥

95

95

Cold crushing strength Mpa  ≥

35

30

Apparent porosity % ≤

22

23

Creep rate(0.2MPa,1550°C,50h)% ≤

0.8

0.8

True density g/cm3 ≤

2.35

2.35

Thermal expansion(1000 °C)% ≤

1.26

1.26

Quality silica brick for Glass kiln

Item

XBG-96

ZBG-96

DBG-95

SiO2   % ≥

96

96

96

Fe2O3 % ≤

0.9

0.9

1.0

Apparent porosity % ≤

22

23

24

Permanent linear Change 1450 °C,2h % ≤

0.3

0.3

0.3

Refractoriness under load, 0.2MPa, °C≥

1680

1680

1670

True density g/cm3 ≤

2.34

2.34

2.35

Cold crushing strength Mpa  ≥

35

30

30

Single weight kg

≤15

>15-≤25

>25-≤40

Silica brick for coke oven

Item

Furnace bottom,Furnace wall

Other

SiO2   % ≥

94

94

Cold crushing strength Mpa  ≥

30

25

Apparent porosity % ≤

22.

24

Refractoriness under load, 0.2MPa, °C≥

1650(Cementation silica 1620)

1650(Cementation silica 1620)

Permanent linear Change 1450 °C,2h ≤

0-+0.2

0-+0.2

True density g/cm3 ≤

2.34

2.35

Thermal expansion(1000 °C)% ≤

1.28

1.30