High-Alumina Fire Bricks supplied by The Fire Bricks Supply Co – Trusted supplier and wholesaler

High-Alumina Fire Bricks

High-Alumina Fire Bricks from The Fire Bricks Supply Co, Kolkata’s trusted supplier and wholesaler, deliver unmatched performance in high-heat environments. With alumina levels above 70%, these bricks resist thermal shock, chemical corrosion, and mechanical wear, making them perfect for steel mills, glass kilns, and petrochemical units. Their superior insulating properties and dimensional stability under heat exposure ensure energy efficiency and structural integrity. Available in both standard and bespoke sizes, they simplify installation and cut downtime. Trust us for bulk availability, competitive pricing, and prompt delivery for all your refractory requirements.

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Technical specifications of High-Alumina Fire Bricks

Parameter Specification
Product Name High-Alumina Fire Bricks
Alumina Content (Al₂O₃) ≥ 70%
Silica Content (SiO₂) ≤ 28%
Bulk Density 2.6 – 2.8 g/cm³
Apparent Porosity 16 – 20%
Cold Crushing Strength ≥ 200 kg/cm²
Modulus of Rupture ≥ 30 kg/cm²
Thermal Conductivity @1000 °C 1.2 – 1.6 W/m·K
Maximum Service Temperature Up to 1750 °C
Refractoriness Under Load ≥ 1550 °C
Thermal Shock Resistance ≥ 25 cycles at 1000 °C
Water Absorption ≤ 12%
Standard Size 230 × 114 × 65 mm (Custom sizes available)

Features

  • These fire bricks sustain their shape under prolonged exposure to molten metal environments without deformation.
  • Their finely graded mineral structure minimizes thermal expansion for crack-free performance.
  • Manufactured to low alkali content, they resist glaze formation and surface spalling in glass applications.
  • Precision casting yields smooth surfaces that improve mortar adhesion and reduce installation time.
  • Their dense formulation lowers refractory wear rates, extending the service life of high-temperature installations.

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