High Alumina Bricks are a type of shaped refractory material with Al₂O₃ content ranging from 48% to 80%. They are engineered to withstand extreme high temperatures, resist slag erosion, and provide thermal shock stability in industrial furnaces. High Alumina Bricks are widely used in steel, cement, chemical, incineration, and other high-temperature applications.
Highland Refractory specializes in producing high alumina bricks that combine advanced manufacturing with strict quality control, ensuring reliable performance in demanding industrial conditions.
High Alumina Fire Bricks are manufactured from selected high-purity bauxite through dry pressing and firing at 1420–1530℃. They feature high strength, thermal stability, and chemical slag resistance.
Applications: Steel blast furnaces, heat treatment furnaces, chemical reactors, cement kilns.
Specifications:
|
Item / Index |
Al₂O₃ % |
Refractoriness ℃ |
Bulk Density g/cm³ |
Cold Crushing Strength MPa |
|---|---|---|---|---|
|
LZ-80 |
≥80 |
≥1790 |
2.65 |
≥55 |
|
LZ-75 |
≥75 |
≥1790 |
2.50 |
≥50 |
|
LZ-65 |
≥65 |
≥1790 |
2.45 |
≥45 |
|
LZ-55 |
≥55 |
≥1770 |
2.40 |
≥40 |
|
LZ-48 |
≥48 |
≥1750 |
2.30 |
≥35 |
Made with special-grade bauxite, corundum, magnesia, and graphite, these bricks provide excellent slag erosion resistance, low creep, and thermal shock performance.
Applications: Converters, electric arc furnaces (EAFs), ladles, refining furnaces.
Specifications:
|
Item / Index |
MgO % |
Al₂O₃ % |
C % |
Apparent Porosity % |
Bulk Density g/cm³ |
Crushing Strength MPa |
|---|---|---|---|---|---|---|
|
LMT-6 |
≥6 |
≥78 |
≥8 |
≤5 |
≥3.1 |
≥45 |
|
LMT-8 |
≥8 |
≥78 |
≥8 |
≤5 |
≥3.1 |
≥45 |
These bricks contain organic substances to increase porosity, providing excellent thermal insulation and energy-saving properties.
Applications: Insulation lining in industrial furnaces or kilns.
Specifications:
|
Item / Index |
Al₂O₃ % |
Bulk Density g/cm³ |
Cold Crushing Strength MPa |
Refractoriness Under Load ℃ |
|---|---|---|---|---|
|
PD-0.8 |
≤60 |
0.8 |
≥5 |
1400 |
|
PD-1.0 |
≤60 |
1.0 |
≥6.5 |
1400 |
|
PD-1.2 |
≤60 |
1.2 |
≥8 |
1450 |
Produced with high-quality bauxite clinker, these bricks offer high temperature resistance, low thermal conductivity, and excellent volume stability.
Applications: Petrochemical black furnaces, gas-generating furnaces, high-temperature insulation lining.
Specifications:
|
Item / Index |
Al₂O₃ % |
Max Service Temp ℃ |
Bulk Density g/cm³ |
Cold Crushing Strength MPa |
|---|---|---|---|---|
|
LKZ-88 |
≥88 |
1650 |
1.30–1.45 |
≥6 |
|
LKZ-98 |
≥98 |
1800 |
1.40–1.65 |
≥8 |
High Alumina Bricks are designed for extreme thermal and chemical environments:
Steel Industry: Blast furnace lining, EAFs, ladles.
Cement Industry: Rotary kilns, preheater towers, clinker furnaces.
Chemical Industry: High-temperature reactors and furnaces.
Incineration & Energy: Garbage incinerators, fluidized bed furnaces.
Highland Refractory ensures that each brick type matches specific industrial scenarios, optimizing longevity, performance, and energy efficiency.
Highland Refractory uses:
High-purity bauxite and carefully selected raw materials.
Advanced dry pressing and high-temperature firing (1420–1530℃).
Strict quality control: 3-step inspection (raw material → semi-finished → finished) and batch reports.
Testing: Al₂O₃/MgO content, apparent porosity, thermal shock cycles, cold crushing strength.
This guarantees consistent quality, reliability, and industrial performance.
Durability & Performance: Long service life under extreme conditions.
Energy Efficiency: Insulating options reduce heat loss.
Technical Support: Scenario-based selection guidance for optimal brick type.
Global Supply: Timely delivery with certified specifications.
If you want a customized High Alumina Brick solution for your furnace, or need technical specifications and quotes, contact our Highland Refractory specialist today to get your free consultation.
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High alumina fine powder is a powder material with alumina (Al2O3) as the main component.
