Silica Bricks - yqhuaxu

SiO2 (%) ≥ 94 95 94
Al2O3,(%) ≤ 1.2 1.0
Fe2O3 (%) ≤ 1.3 1.2 1.5
Refractoriness (C) ≥ 1***0
Refractoriness under load
0.2 MPa (C),≥ 1***0
True density (g/cm3) ≥ 2.34 2.33 2.37
Apparent porosity(%) ≤ 22 19 22
Cold crushing strength (MPa) ≥ 30 35 30
Residual quartez (%) ≤ 1 1
Linear change after reheating
1450C×2h (%) +0.2 +0.2