Alumina Refractory Brick

Alumina refractory brick is the industry-proven solution trusted by steel mills, cement plants, and glass furnace operators worldwide. As a alumina bricks manufacturer with direct factory supply, we produce Al₂O₃ content ranging from 48% to over 90% to meet the full spectrum of operating conditions. Specifically, our range covers standard high alumina bricks, mullite bricks, and corundum bricks so that engineers and procurement teams can source the right grade from a single, verified supplier. Whether you’re sourcing refractory bricks for blast furnaces, rotary kilns, or electric arc furnaces, our factory-direct pricing and in-house quality control give you a certified and consistent product.

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30-99%

Al₂O₃ Content

7-35

Days Delivery

ISO/CE/SGS

Certificates

1250-1700℃

Refractoriness Under Load

Proven Alumina Refractory Brick Solutions Across High-Temp Industries

REBO does not offer a one-size-fits-all approach to alumina refractory solutions. We build our recommendations around the specific realities of your operation.

Matching Performance to Your Actual Conditions

Before recommending a single material, REBO’s technical team maps your operating parameters, including peak temperature, cycling frequency, chemical environment, and mechanical stress. The result is an alumina brick grade that delivers reliable performance, precisely matched to your conditions and budget.

Specify for Service Life, Not Just for Price

Unlike suppliers who compete on price per brick, REBO shifts the conversation to cost per operating day. This is because consistent Al₂O₃ content, controlled porosity, and verified compressive strength across every batch translate directly into predictable service life. As a result, your maintenance schedules become something your operation can actually plan around rather than react to.

A Partner Beyond the Purchase Order

From technical consultation and custom dimensioning to installation guidance and post-campaign review, REBO stays engaged through the full lifecycle of your refractory lining. Our clients return because we consistently reduce the total risk and total cost of keeping their operations running.

Types of Alumina Refractory Bricks

$Fireclay Brick-Alumina Refractory Brick$

Fireclay Brick

Al₂O₃ Content: 30-48%;

Refractoriness: 1580-1770°C;

Features: Low cost, good thermal stability;

Used for blast furnaces, hot blast stoves, coke ovens, boilers, etc.

$SK-Grade High Alumina Refractory Brick$

High Alumina Brick

Al₂O₃ Content: 48-75%;

Refractoriness: 1750-1790°C;

Used for Blast furnaces, electric arc furnaces, cement rotary kilns, etc;

$Mullite Bricks-Alumina Refractory Brick$

Mullite Bricks

Al₂O₃ Content: 65%-75%;

Refractoriness: 1800°C;

Excellent thermal shock stability, low high-temperature creep, high refractoriness under load;

Used for glass kilns, ceramic kilns, etc.

$Corundum Brick-Alumina Refractory Brick$

Corundum Brick

Al₂O₃ Content: >90%;

Refractoriness: >1800°C;

RUltimate wear resistance, excellent corrosion resistance;

Used for high-temperature laboratory furnaces, steel ladles, specialized metallurgical furnaces, etc.

$Mullite Corundum Brick-Alumina Refractory Brick$

Mullite Corundum Brick

Al₂O₃ Content: 75%-90%;

Refractoriness: >1800°C;

Good thermal shock stability and high strength;

Used for regenerators of large glass kilns, petrochemical heating furnaces.

Alumina Bricks Properties

High Refractoriness

Operates 1580–1800°C and refractoriness rises with Al₂O₃ content.
High Mechanical Strength

Cold crushing strength 40–200 MPa and stable under load.
Chemical Erosion Resistance

Resists acidic/basic slags, molten metals, and hot gases in different industries.
Thermal Shock Resistance

Withstands repeated rapid temperature changes without cracking.

Volume Stability

Minimal shrinkage or expansion under prolonged high heat.
Low Thermal Conductivity

Reduces heat loss and energy consumption.
Abrasion Resistance

Mohs hardness 7–9 and corundum bricks offer best wear performance.
Good Processability

Abundant raw materials and customizable shapes and sizes.

Where Alumina Refractory Bricks Perform Best

Alumina firebricks serve heavy industries worldwide — specifically, industries that face extreme heat, chemical erosion, and mechanical stress on a daily basis. Given these demands, material performance is not a preference; it is a requirement. That is why every REBO alumina firebrick is engineered to meet the harshest conditions your operation can present.

>1770°C

Refractoriness

30–99%

Al₂O₃ range

1500–1600°C

Firing temperature

Industries

Steel and Metallurgy Industry

Bricks line blast furnace bellies, boshes, and lower shafts. They also line hot blast stove combustion chambers and checker brickwork. Other uses include electric arc furnace roofs and sidewalls. They also protect ladle and tundish working linings and impact zones.

Cement Industry

Bricks go into rotary kiln transition and cooling zones. They also line calciner walls and constrictions. Another common use is preheater cyclone linings.

Glass Industry

The glass industry uses aluminum oxide bricks for regenerator checker brickwork. They also line port walls and furnace pool bottoms and walls. Another application is annealing lehr chamber linings.

Non-Ferrous Metal Smelting Industry

Bricks protect aluminum electrolytic cell sidewalls and bottoms. They also line copper smelting furnace walls and bottoms. Induction furnaces receive full linings from these bricks.

Ceramics Industry

The ceramics industry uses bricks in tunnel kiln roofs and walls. They also go on tunnel kiln cars and shuttle kiln chamber linings. Roller kiln high-temperature zones use them as well.

Power Generation Industry

Bricks line power station boiler combustion chambers and flues. They also line waste incineration furnace combustion zone walls. CFB boilers use them for furnace chambers and cyclone

See REBO Alumina Refractory Brick in Action

Every brick we ship is built for real-world performance. To illustrate this, the photos below are taken directly from customer installation sites across the steel, cement, glass, and petrochemical industries. In other words, what you see is REBO alumina refractory bricks in place, at scale, and under real operating conditions — not studio shots or rendered simulations. Customers also are satisfied with our competitive factory alumina bricks price.

From blast furnace linings in Southeast Asia to rotary kiln installations in the Middle East, our factory-direct supply ensures every project receives consistent quality, precise dimensions, and on-time delivery — exactly as specified, without exception. This is possible because our vertically integrated production model eliminates intermediaries, giving you direct control over specification, lead time, and quality verification at every stage.

Steel & Metallurgy

Electric arc furnace for side wall & roof lining

Requires bricks with high slag resistance and thermal shock stability under rapid temperature swings.

Steel ladle working lining & well block

Direct contact with molten steel. Demands high density, low porosity, and erosion resistance.

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Glass & Ceramics

Float glass tank furnace for regenerator packing

Checker bricks must resist alkali vapour, thermal cycling, and maintain heat exchange efficiency over 5–8 year campaigns.

Ceramic tunnel kiln for car & side wall lining

Long continuous operation at 1300–1400°C. Dimensional precision matters for tight stacking and kiln car flatness.

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Certified Quality, Transparent Process

When sourcing alumina refractory bricks, price is only part of the equation. What truly determines value is the composition, manufacturing process, and quality control behind every brick and that is exactly what our certifications verify.

When it comes to composition, every REBO alumina brick is formulated with high-grade bauxite and industrial Al₂O₃, with content ranging from 48% to over 90% depending on the grade. More importantly, our ISO 9001-certified quality management system ensures that the alumina bricks composition you specify on your purchase order is the exact composition you receive batch after batch, shipment after shipment.

When it comes to alumina bricks manufacturing process, our alumina bricks production follows a strictly controlled flow: raw material selection, batching, mixing, pressing, drying, high-temperature sintering at up to 1,600 °C, dimensional inspection, and packaging. Furthermore, every stage is fully documented and traceable — a standard enforced by our ISO 14001 environmental management certification and independently verified by SGS and CE third-party audits.

On price, our factory-direct model eliminates middlemen, meaning our alumina bricks price reflects actual production cost not trader markups. With 280,000 tons of annual capacity, we maintain stable pricing even during peak demand cycles, giving your procurement team a reliable, long-term supply partner.

Our full certification portfolio — including ISO 9001, ISO 14001, SGS, and CE — is available for download below. Should you require product-specific test reports or third-party inspection arrangements, contact our technical team directly. Additionally, to learn more about our facilities, production standards, and customer partnerships, visit the REBO Facebook page.

Recommended Product Combinations for Alumina Refractory Brick

Refractory Mortar

This product fills joints between bricks and, as a result, prevents gas and slag penetration. The matching principle is straightforward: mortar composition must match brick composition. For example, high-alumina bricks require high-alumina mortar, while corundum bricks require corundum mortar. This is because keeping thermal expansion consistent between mortar and brick is critical — otherwise, differences in expansion will cause cracks and spalling.

Insulating Fire Brick

Workers place IFB behind alumina-based bricks as a backup laye for reducing furnace shell temperature. It also cuts heat loss and saves energy. For this reason, alumina-based bricks must serve as the working lining in front, absorbing the direct impact of heat and chemical attack. As a result, the two materials form a composite furnace lining with complementary functions where each layer does precisely what the other cannot.

Monolithic Refractories

These products include refractory castables, mortars, plastics, and ramming mixes. They are specifically designed to fill irregular areas such as furnace openings, pipe joints, and complex curved surfaces. These are areas where standard bricks simply cannot provide adequate coverage. This combination creates a fully sealed, continuous furnace lining and eliminates potential gaps. So, it works well with alumina refractory bricks.

Ceramic Fiber Products

This material works for furnace doors, expansion joint fills, and furnace cover edges areas that specifically need flexible sealing solutions. However, alumina-based bricks have a rigid structure, whereas ceramic fiber is a flexible material. Together, the two solve thermal expansion gap problems effectively, preventing bricks from pressing into each other and cracking.

Zircon Bricks

The worst slag erosion areas include steel ladle slag lines and glass furnace liquid lines. These areas use zirconia bricks instead of or together with alumina-based bricks. Zirconia materials resist basic slag erosion much better than alumina-based bricks. This zoned protection approach extends total furnace lining life while keeping costs under control.

Silicon Carbide Bricks

Blast furnace hearths and bellies use SiC bricks together with high-alumina bricks. SiC has high thermal conductivity, which in turn helps form a protective slag layer on the furnace wall. High-alumina bricks, on the other hand, provide the structural support the lining requires. Together, the two materials offer complementary advantages.

FAQs About Alumina Refractory Brick

Q: What Al₂O₃ content should I choose for my application?

A: Higher Al₂O₃ content suits higher-temperature or more corrosive environments. Standard grades (48–75%) fit most industrial furnaces, while corundum bricks (90%+) are used for extreme conditions.

Q: Can alumina refractory brick resist both acidic and basic slags?

A: Yes. Unlike silica bricks, alumina refractory bricks resist both acidic and basic slag attack, with resistance improving as Al₂O₃ content increases.

Q: How do high-alumina refractory brick perform under frequent temperature fluctuations?

A: They offer good thermal shock resistance, especially mullite and clay-bonded grades, making them suitable for furnaces with frequent start-up and shutdown cycles.

Q: What is the maximum service temperature for alumina fire brick?

A: Depending on grade, service temperatures range from 1,580 °C (clay bricks) to over 1,800 °C (corundum bricks). As a result, selecting the right grade for your operating temperature is essential to maximizing service life.

Q: Can alumina refractory brick be made into custom shapes and sizes?

A: Yes. Mature production processes allow alumina refractory brick to be manufactured in various special shapes and custom dimensions. In other words, virtually any furnace design requirement can be met without compromising material performance.