Fire Brick

Refractory brick
2.1
fire brick
properties:
alumina content in fireclay bricks approximate 30-42%.
good thermal shock and spalling resistance.
good resistance to abrasion and corrosion.
good volume stability at high temperature.
high machanical strength.
Applications:
furnace construction.
blast furnace
hot blast stove.
coke ovens 
gas furnace.
cement industry
glass industry
item index
sk-30 sk-32 sk-34
al2o3,%, ≥30 ≥38 ≥42
fe2o3,%, ≤2.5 ≤2.5 ≤2.5
density, gcm3 ≥2.0 ≥2.15 ≥2.2
refractoriness,℃, ≥1700 ≥1720 ≥1740
0.2mpa refractoriness under load,℃ ≥1300 ≥1320 ≥1350
liner change on reheating (1400 ℃, 2h),% +0.1～-0.4 +0.1～-0.4 +0.1～-0.4
app.porosity,% ≤24 ≤24 ≤24
c.c.s.,mpa ≥25 ≥30 ≥35