ACID-RESISTANT FIRECLAY BRICK

  • Most wide-used basic acid-resistant brick (for both organic and inorganic acids except hydrofluoric)
  • Limited alkali resistance
  • Good abrasion resistance
  • Limited thermal-shock resistance

APPROXIMATE CHEMICAL ANALYSIS
Silicon Oxide (SiO2) 66.00 – 71.00%
Aluminum Oxide (Al2O3) 23.00 – 28.00%
Other 5.00 – 6.00%
AVERAGE PHYSICAL PROPERTIES
Porosity 7 – 12%
Water Absorption 3 – 5%
Compressive Strength 12,000 – 22,000 #/in2
Acid Solubility 2.1 – 4.5%
Modulus of Rupture 2,500 psi
Coefficient of thermal expansion 2 – 3.5 in./in./ºF x 10-6