Corundum Refractory Brick Supplier | Dense High Alumina Brick for Extreme Conditions

Corundum Brick | High Purity Alumina Refractory Brick for Extreme Temperature Applications

Corundum brick is a premium refractory material made from high-purity alumina raw materials.

With high Al₂O₃ content and a dense structure, corundum brick provides excellent resistance to high temperature, mechanical wear and chemical corrosion.

It is widely used in demanding industrial applications where conventional refractory bricks cannot meet long service requirements.

Parameter of Corumdum Brick

Item	Ultra Purity Corundum Brick	99 Corundum Brick	90 Corundum Brick	Corundum-Mullite Brick
Al₂O₃(%)≥	99.3	98.5	90	80
SiO₂(%)≤	0.15	0.3	8.5	18.5
Fe₂O₃(%)≤	0.1	0.2	0.2	0.3
Bulk density(g/cm³)≥	3.25	3.25	3.1	2.9
Apparent porosity(%)≤	18	18	18	18
Cold crushing strength(MPa)≥	100	100	120	120
Refractoriness under load, ℃(0.2MPa,0.6%)≥	1700	1700	1700	1700
Reheating linear change rate, %(1600℃ x 8h)	-0.2	-0.2	0.2	0.2
Thermal expansion coefficient, x 10-6 (Room temp. to 1300’C)	8.1	8.1	8.1	7.6

Product Advantage

• High Alumina Content：Made from high purity alumina materials, providing excellent refractoriness and stability.

• Excellent High Temperature Strength：Maintains structural strength under extreme temperature conditions.

• Superior Wear Resistance：Suitable for areas exposed to severe abrasion and material impact.

• Good Chemical Stability：Resists attack from molten materials and aggressive furnace atmospheres.

Main Application

• Gasification Furnaces：Corundum bricks are used in high-temperature zones of gasification equipment due to their excellent slag resistance and high temperature strength.

• Non-Ferrous Metal Smelting Furnaces：Suitable for furnace areas exposed to molten metals and corrosive slags.
• High Temperature Industrial Furnaces：Used in vacuum furnaces, heat treatment furnaces and special industrial heating equipment.

• Ceramic Kilns：Applied in high-temperature firing equipment requiring stable performance.

Product Process

Why Choose ZKD Refractory Corundum Brick

• Professional Refractory Manufacturer：Experienced in manufacturing high temperature refractory bricks.

• Strict Quality Control：Chemical composition and physical properties are tested before delivery.

• Customized Solutions：Special shapes and sizes available according to customer requirements.

• Export Packaging：Safe packing solutions for international shipment.

FAQ
Q: What is the maximum working temperature of your corundum bricks?

A: Our bricks can withstand continuous temperatures up to 1800°C (3272°F), depending on the Al₂O₃ content and density.

Q;What shapes and sizes are available?

A:We provide:

•Standard bricks: straight, wedge, arch shapes

•Customized designs: based on your drawings or furnace lining needs

Need OEM shapes or CAD support? Contact us.

Q:Are your corundum bricks suitable for steel ladle slag lines?

A:Yes, our dense corundum bricks are ideal for slag line areas, with superior slag penetration resistance and thermal shock performance, achieving up to 80–150 heats lifespan.

Q:Do you offer corundum bricks with zirconia or spinel additives?

A:Yes, we can produce ZrO₂-enhanced corundum bricks or alumina-spinel bricks on request to meet specific slag resistance or thermal expansion control requirements.

Q:How do you package the corundum bricks for export?

A:•Export-standard fumigated wooden pallets

•Plastic wrap + corner protectors to prevent breakage

•Customized labels and shipping marks available

Q:What is your lead time and MOQ?

A:•Standard shapes: 7–15 days

•Customized orders: Negotiable

•MOQ: Typically 10 tons, but trial orders are welcome

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