Silica bricks made from high purity silica with silicon oxide content above 95%. It has  the advantage of being resistant to acids

There are several grades of silica brick refractories:

1.  Silica Brick 94 (GZ-94).
Refractoriness point: 1640 oC
Normal size: 230 x 114 x 65mm
2.  Silica brick 95 (GZ-95).
Refractoriness point: 1650 oC
Normal size: 230 x 114 x 65mm
3.  Silica Brick 96 (GZ-96).
Refractoriness point: 1660 oC
Normal size: 230 x 114 x 65mm

Silica Bricks are widely used in glass kiln, coke oven and hot blast stove