Silica Brick

Silica Refractory Brick Silica Brick is a kind of acid refractory mainly made from tridymite, cristobalite and a small amount of residual quartz as well as glass phase. The raw material is natural silica sand whose SiO2 content should be more than 96%. The higher SiO2 content in silica sand, the...

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Silica Refractory Brick

Silica Brick is a kind of acid refractory mainly made from tridymite, cristobalite and a small amount of residual quartz as well as glass phase. The raw material is natural silica sand whose SiO2 content should be more than 96%. The higher SiO2 content in silica sand, the higher temperature Silica Bricks resist.
Silica Bricks are used in the roof and superstructure of glass melting tanks as well as for hot repairs.


Item

Index

BG-96A

BG-96B

BG-95A

BG-95B

SiO2 %

96

96

95

95

Fe2O3 %

0.8

1.0

1.2

1.2

Fused Index
Unit Weight<20kg
Unit Weight≥20kg

 

0.5
0.6

 


 

0.7
0.7

 


  Cold Crushing Strength
Unit Weight<20kg
Unit Weight≥20kg

35(30)
30(25)

0.2 MPa℃ Refractoriness under Load

1680

1670

1660

1650

Apparent Porosity %

22(24)

True Density g/cm3

2.34

2.35

Application

Arch and breast wall of glass furnace and regenerative chamber




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