Fused Silica Brick

Fused silica brick is also called zero-expansion silica brick or thermal shock-resistant silica brick. They have extremely low thermal expansion coefficient, excellent resistance to rapid cooling and rapid heating, and good high-temperature performance. They are widely used in the rapid repair of various coke ovens.

Parameter of fused silica brick

item	Fused Silica Brick
SiO₂ ( %)	≥98
Al₂O₃ ( %)	≤0.3
Fe₂O₃( %)	≤0.5
CaO( %)	≤0.2
Bulk Density (g/cm3)	≥1.8
Apparent Porosity ( %)	≤20
Cold Crushing Strength(Mpa)	≥30

Advantages of fused silica bricks

Fused silica bricks are of high purity and corrosion resistance
The thermal expansion coefficient of fused silica bricks is small
The thermal shock resistance of fused silica bricks is low
Fused silica bricks have high viscosity at high temperatures, high strength, strong slag resistance, strong impact resistance, low thermal conductivity, and small shrinkage during drying and firing.