The property of fused silica brick is similar to general silica brick, but it has better thermal shock resistance, much lower thermal expansion and it can stand suddenly change of temperature.
|
Brand Item
|
Guarantee Value
|
Typical Value
|
|
SiO2 % ≥
|
98.5
|
98.5-99.5
|
|
Al2O3% ≤
|
0.6
|
0.2-0.5
|
|
Fe2O3 % ≤
|
0.3
|
0.1-0.3
|
|
CaO % ≤
|
0.1
|
0.01-0.1
|
|
Na2O+K2O % ≤
|
0.2
|
0.01-0.2
|
|
Bulk density g/cm3 ≥
|
1.75
|
1.75-1.9
|
|
Apparent porosity % ≤
|
18.5
|
14-18.5
|
|
Cold crushing strength MPa ≥
|
20
|
25-50
|
|
Bending coefficient MPa ≥
|
3.5
|
3.5-6.0
|
|
Thermal shock resistance 1100℃/Water ≥
|
30
|
30-50
|