SILICA BRICKS

Low true density, little residual quartz, high crushing strength, good thermal shock stability above 600, high strict dimension and less polishing work for a contribution to jointing, used in every part of coke over.

General silica bricks are used in coke oven, soaking pit and used as kiln furniture for firing refractories etc. Silica brick for hot blast stove is principally used in high temperature zones, such as roof, upper stack, upper checkers etc.

Light weight silica bricks and high strength light weight silica bricks

Item Light weight silica bricks High strength light weight silica bricks

QG-1.2 QG-1.0 QG-0.8 GQG-1.0 GQG-0.8 GQG-0.6 GQG-0.4

SiO2 (%) 91min 90min 90min 92min

Application temperature(°C) 1670min 1600min 1600min 1670min

0.1Mpa Initial Soften Point Under Load (°C) 1560min 1430min 1400min 1560min 1500min 1450min 1400min

Apparent porosity(%) 45max _ _ 50min 55min 60min 70min

Cold crushing strength (Mpa) 3.5min 3.0min 2.5min 15min 6min 4min 1min

Bulk Density (g/cm3) 1.2max 1.0max 0.8max 1.05max 0.85max 0.65max 0.45max

Real Bulk Density(g/cm3) 2.39max