High Alumina Bricks – Durable & Heat-Resistant Refractory Solutions

What Are High Alumina Bricks?

High Alumina Bricks are premium-quality refractory materials made from bauxite and other raw materials with high alumina content. Known for their excellent thermal stability, mechanical strength, and resistance to chemical corrosion, these bricks are ideal for applications exposed to extreme heat and pressure.

They are widely used in furnaces, kilns, incinerators, and reactors in industries like steel, cement, glass, and petrochemicals.

Key Features of High Alumina Bricks

  • High Alumina Content (50%–90%) – Ensures superior refractoriness and load-bearing capacity.

  • Excellent Thermal Shock Resistance – Maintains stability under rapid temperature changes.

  • Chemical Corrosion Resistance – Performs well against slags, alkalis, and acids.

  • High Mechanical Strength – Withstands heavy loads and harsh environments.

  • Dimensional Accuracy – Uniform size for easy installation and tight joints.

Technical Specification of High Alumina Bricks

Particulars MR-50 MR-55 MR-60 MR-65 MR-70 MR-80
CHEMICAL ANALYSIS (%)
Al₂O₃ 50 55 60 65 70 80
Fe₂O₃ 3 3 3.2 3.2 3.3 3.5
SiO₂ 40 34.5 39.5 24.5 18.8 9.3
TiO₂ 2.5 2.6 2.7 2.8 2.8 3.1
PHYSICAL PROPERTIES
Bulk Density 2.30 2.40 2.55 2.60 2.65 2.78
Apparent Porosity 22 22 21 21 20 19
Cold Crushing Strength 400 450 480 500 550 700
THERMAL PROPERTIES
P. C. E. 33+ 33+ 34 34+ 35 37
R.U.L. 1420 1430 1450 1460 1470 1510
P. L. C ∓ 1.00 at 1450 C ∓ 1.00 at 1450 C ∓ 1.50 at 1500 C ∓ 1.50 at 1500 C ∓ 1.50 at 1510 C ∓ 2.00 at 1550 C

Applications of High Alumina Bricks

High Alumina Bricks are engineered for high-temperature industrial processes, offering long service life and efficiency in:

  • Cement Industry: Rotary kilns, preheaters, and clinker coolers

  • Steel Industry: Blast furnaces, ladles, reheating furnaces

  • Glass Industry: Melting tanks, regenerators, flues

  • Petrochemical Plants: Reformers, cracking furnaces

  • Power Plants: Boilers and incinerators