Index

GZ-96

GZ-95

GZ-94

ω（SiO2） % ≥

96

95

94

ω（Fe2O3） % ≤

1.0

1.2

1.4

Apparent porosity %

22.

Cold crushing strength /MPa ≥

weight＜20kg

35

weight≥20kg

30

0.20MPa Refractoriness under load ≥

1660

1650

1640(silica as binder1620)

True density g/cm3 ≤

2.34

2.35

Index

Wall brick for arch ceiling kiln

Checker brick

SiO2 % No less than

95

Cold crushing strength MPa No less than

35

30

Apparent porosity % No more than

22.

23

Creep rate，%（0.2MPa,1550℃，50h）No more than

0.8

True density g/cm3 No more than

2.35

Thermal expansion coefficient（1000 ℃）% No more than

1.26

Residual quartz，%

provide data

Index

BG-96A

BG-96B

BG-95A

BG-95B

SiO2 % No less than

96

96

95

95

Fe2O3 % No more than

0.8

1.0

1.2

1.2

Apparent porosity % No more than

22

Melting index
No more than

weight＜20kg

0.5

—

0.7

—

weight≥20kg

0.6

—

0.7

—

0.20MPa Refractoriness under load℃
No less than

1680

1670

1660

1650

True density g/cm3 No more than

2.34

2.35

Cold crushing strength MPa No less than

weight＜20kg

35

weight≥20kg

30

Index

XBG-96

ZBG-96

DBG-95

SiO2 % ≥

96

96

96

Fe2O3 % ≤

0.9

0.9

1.0

Apparent porosity % ≤

22

23

24

Melting index，% ≤

0.5

0.5

0.6

Reheating linear change % 1450 ℃，2h ≤

0.3

0.3

0.3

0.20MPa Refractoriness under load℃ ≥

1680

1680

1670

True density g/cm3 ≤

2.34

2..34

2.35

Cold crushing strength MPa ≥

35

30

30

weight kg

≤15

＞15—≤25

＞25—≤40

Index

Furnace bottom, furnace wall

Others

SiO2 % No less than

94

Cold crushing strength MPa No less than

30

25

Apparent porosity % No more than

22.

24

0.20MPa Refractoriness under load ℃
No less than

1650(silica as binder1620)

Reheating linear change % 1450 ℃，2h

0—+0.2

True density g/cm3 No more than

2.34

2.35

Thermal expansion coefficient（1000 ℃）%
No more than

1.28

1.30