Silica bricks Physical And Chemical Indicators

 Item

 Indicators

GZ-96

GZ-95

GZ-94

w(SiO2)/ %                       ≥

96

95

94

w(Fe2O3)/ %                      ≤

1.0

1.2

1.4

 Apparent Porosit / %   ≤

22(24)

Cold Crushing Strength/ Mpa      ≥

Single heavy<20Kg

35(30)

Single heavy≥20Kg

30(25)

s

1660

1650

1640

  True Density(g/cm3)     ≤

2.34

2.35

 Refractoriness/°C

     ≥

1710

1710

1690

.
MARK:Values in brackets for the hand-molded brick indicators