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KT Refractories US Company

high alumina Bricks high alumina Bricks

High Alumina Bricks

High Alumina Bricks are produced with select bauxite chamotte as main raw material, fired at 1450-1470 °C by advanced process with strict quality control.

High Alumina bricks have great features like high temperature performance, great corrosion and wear resistance, high bulk density, low iron content, etc. High Alumina bricks are extensively used in mining, metallurgy, cement, and chemical, refinery and refractory industries.

These bricks are used in all kinds of industrial furnaces and high temperature areas to prolong the lives of furnaces.

KT Refractories distributes High Alumina Bricks of the best quality at the most competitive prices worldwide.

Call 1-877-365-2995 to order High Alumina Bricks, and our fast, responsive customer service and reliable delivery service will save you time and money!

Typical High Alumina Bricks Technical Data Specs

Technical data for other firebricks are available upon request.
High Alumina Bricks HA60 HA70 HA75 HA80
Al2O3 (%) ≥ 60 ≥ 70 ≥ 75 78-80
SIO2 (%) 32 22 20 ≥ 18
Fe2O3 (%) ≤ 1.7 ≤ 2.0 ≤ 1.8 ≤ 1.8
Na2O+K2O (%) < 2.3 < 2.0 < 1.2 /
Refractoriness >1790 >1800 >1825 ≥ 1850
Refractoriness under load 0.2MPa (°C) 1450 >1510 >1530 ≥ 1550
Porosity (%) 22 <22 <21 20
Bulk density (g/cm³) 2.33 2.43-2.48 2.40-2.50 2.55
Cold crushing strength (MPa) ≥ 45 ≥ 50 ≥ 54 ≥ 60

REFRACTORY BRICKS HIGH ALUMINA ZBHT SERIES

 

High Alumina Bricks
LZ-48 LZ-55 LZ-65 LZ-70 LZ-75 LZ-80 LZ-85
Al2O3 (%) ≥48 ≥55 ≥65 ≥70 ≥75 ≥80 ≥85
Fe2O3 (%) ≤2.5 ≤2.5 ≤2.0 ≤2.0 ≤2.0 ≤2.0 ≤1.8
Refractoriness (°C) 1760 1760 1770 1770 1770 1790 1790
Apparent porosity (%) ≤23 ≤23 ≤23 ≤23 ≤23 ≤22 ≤22
Bulk density (g/cm3) 2.30 2.35 2.40 2.40 2.46 2.68 2.72
Refractoriness under load 0.2MPa (°C) 1420 1470 1500 1510 1520 1530 1550
Cold crushing strength (MPa) 45 45 50 60 60 65 70
Permanent linear change (%) 1500 °C × 2h -0.4 to 0.1 -0.4 to 0.1 -0.4 to 0.1 -0.4 to 0.1 -0.4 to 0.1 -0.4 to 0.1 -0.4 to 0.1

REFRACTORY BRICKS HIGH ALUMINA KFTN SERIES

High Alumina Bricks Chemical Composition Physical Indexes
Al2O3 SiO2 Fe2O3 TiO2 Bulk Density Apparent porosity (%) Cold Crushing Strength (MPa)
SK-36 ≥50% ≤3.0% ≥2.25 ≤26 ≥25
A-10 ≥60% ≤2.0% ≥2.50 ≤20 ≥40
SK-38 ≥70% ≤2.0% ≥2.45 ≤24 ≥35
DL-70B ≥70% ≤23% ≤2.2% ≤3.5% ≥2.55 ≤24 ≥45
DL-70M ≥70% ≤2.0% ≥2.6 ≤20 ≥50
SA-38 ≥70% ≤1.5% ≥2.6 ≤20 ≥50
SAL-70 ≥70% ≤1.5% ≥2.6 ≤20 ≥60
SAL-75 ≥75% ≤1.5% ≥2.7 ≤20 ≥60
DL-80B ≥80% ≤15% ≤2.0% ≤3.5% ≥2.8 ≤23 ≥50
VR-85 ≥82% ≤12% ≤1.8% ≤3.8% ≥2.7 ≤22 ≥50
AL-C85 ≥82% ≥2.9 ≤19 ≥96
DL-85B ≥83% ≤11% ≥2.8 ≤22 ≥60
NWB-85AR ≥85% ≤2.0% ≥2.95 ≤17 ≥80
SAL-85 ≥84% ≤1.0% ≥2.85 ≤20 ≥60

Typical Application for High Alumina Bricks:

  • SK standard series high alumina bricks
  • High Alumina Brick for general applications
  • High Alumina Brick for blast furnace
  • Burned micro hole carbon-high alumina brick for blast furnace
  • Normal high alumina brick for hot blast stove
  • Low creep high alumina brick for hot blast stove
  • High Alumina Brick for electric arc furnace roofs
  • High Alumina Brick for steel ladle