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Arora Refractories
Your furnace is only as strong as its refractory lining.
Standards at Arora haven't shifted since 1977 — only the plants we serve have grown.
Arora Refractories — Built to Withstand. Since 1977.
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Insulating Bricks — CFI · HFI · HFK · MICA

Low-density insulating bricks for backup linings, roofs, and doors — engineered to cut heat loss and improve furnace efficiency. Available in five density grades.

🧊 BD 0.48–1.15 Grades🔥 Up to 1400°C💡 Energy-Saving
Backup InsulationInsulating Bricks
Lightweight Insulation

Insulating Firebricks — CFI, HFI, HFK & MICA

Low-density backup bricks that cut heat loss, improve fuel efficiency, and absorb thermal shock behind the hot-face lining. Five density grades covering 0.48 to 1.1 g/cc.

  • Bulk density from 0.48 to 1.1 g/cc
  • Low thermal conductivity — significant energy savings
  • Available in standard IS shapes & custom sizes
  • Perfect for cold-face and roof applications
  • Reduces furnace outer-shell temperature

Insulating Bricks — Technical Data

5 GRADES
GradeBD (g/cc)Al₂O₃ (%)SiO₂ (%)Fe₂O₃ (%)CCS (kg/cm²)Application
CFI0.75 – 0.8032 – 3650 – 551.5 max15Backup insulation
HFI-II0.85 – 0.9536 – 4048 – 521.5 max20Furnace walls
HFI0.9 – 1.138 – 4246 – 501.5 max25Hot backup
HFK1.0 – 1.142 – 4644 – 481.5 max30Kilns & furnaces
MICA0.48 – 0.5328 – 3252 – 561.0 max10Low-temp insulation
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