Alumina Silica Refractory Brick

Alumina silica refractory bricks are acid-and alkali-resistant refractory materials primarily composed of silica and alumina. They offer high refractoriness, slag resistance, thermal shock resistance, and excellent mechanical properties. These bricks are widely used in applications such as kiln linings and pipework.

Types of Kerui Alumina Silica Refractory Bricks

Alumina silica refractory bricks are a type of refractory brick made by firing a mixture of Al2O3, SiO2, and additives. According to the composition content of alumina and silicon oxide, Kerui Refractory offers the following types of alumina silica refractory bricks:

Corundum Mullite Brick

Chrome Corundum Brick

Silica Brick

Silicon Carbide Brick

Alumina Silicon Carbide Brick

Different Sizes of Alumina Silicate Brick

Common shapes: Standard straight brick, axe-shaped brick, knife-shaped brick, wedge-shaped brick, two-piece/four-piece brick, half-strip brick, anchor brick, runner brick/steel brick, pre-hole/rod-hole brick, arch foot brick, checker brick, composite brick, general-purpose curved brick, curved brick, etc.

Commonly used in various industries: Blast furnace bricks, hot blast furnace bricks, heating furnace bricks, boiler bricks, electric furnace bricks, rotary kiln bricks, glass melting furnace bricks, ladle bricks, refining furnace bricks, reactor furnace bricks, ceramic kiln bricks, etc.

Comparison Of Different Types Of Alumina Silica Bricks

Refractory Brick Type

Main Chemical Composition

Chemical Nature

Key Characteristics

Primary Application Areas

Fire Clay Brick

Low Al₂O₃ (25-48%)

Weakly Acidic

Low cost;
Average overall performance.

Low-temperature kilns, flues, boiler linings

High Alumina Brick

High Al₂O₃ (>48%)

Neutral

Significantly improved refractoriness;
Strength and erosion; Resistance compared to fire clay.

Blast furnaces, hot blast stoves, cement rotary kilns, and electric furnace roofs

AZS Brick (Alumina-Zirconia-Silica)

Al₂O₃-ZrO₂-SiO₂

Basic

Exceptional resistance to glass liquid corrosion;
High hot strength.

Glass melting furnaces (tank walls, bottom, throat, doghouse areas – contact with glass melt)

Corundum Brick

Very High Al₂O₃ (>90%)

Neutral

Very high strength;
High abrasion resistance;
High refractoriness.

Gasifiers, carbon black reactors, and high-temperature kiln wear linings

Corundum Mullite Brick

Al₂O₃-SiO₂

Neutral

Better thermal shock resistance than pure corundum brick;
Balanced properties.

Hot blast stoves, ceramic roller kilns, petrochemical gasifiers

Chrome Corundum Brick

Al₂O₃-Cr₂O₃

Neutral

Extremely resistant to molten metal;
Basic slag corrosion.

Non-ferrous metallurgical furnaces (Cu, Al), coal gasifiers, RH degassers

Silica Brick

Very High SiO₂ (>94%)

Acidic

Very high structural strength at high temperatures

Coke ovens, glass furnace crowns, hot blast stove upper checkerwork, and domes

Silicon Carbide Brick (SiC)

SiC

Neutral

High thermal conductivity;
High abrasion resistance;
Excellent thermal shock resistance.

Aluminum electrolysis cells, kiln furniture (beams, setters), blast furnace lower shafts, burner nozzles

Alumina Silicon Carbide Brick (Al₂O₃-SiC(-C))

Al₂O₃-SiC(-C)

Neutral

Excellent resistance to molten iron erosion and thermal shock;
High strength.

Blast furnaces, torpedo ladles (iron transport cars), and iron runner systems

Advantages of Alumina Silicate Brick

High Refractoriness: Alumina silicate firebricks have a high melting point, making them suitable for various high-temperature industrial applications.

Wear Resistance: Alumina silica fire bricks can be used in environments with high mechanical strength. This kind of silica firebrick have high wear resistance.

High Strength: At high temperatures, alumina silicate refractory bricks do not easily fall off. They have strong compressive and flexural strength.

Corrosion Resistance: It can resist the corrosion of acidic and alkaline media at high temperatures.

Strong Thermal Shock Resistance: Alumina silica firebrick do not deform at high temperatures and maintain their dimensional stability.

Good Thermal Conductivity: It can improve the thermal efficiency of kilns and other high-temperature equipment.

$Kerui Alumina Silica Refractory Bricks$

Applications of Alumina Silicate Fire Brick

Metallurgical Industry: Electric furnace, open hearth furnace, steelmaking furnace, ironmaking furnace, converter, heating furnace, etc.

Building Materials Industry: Cement kiln, glass kiln, lime kiln, ceramic kiln, tunnel kiln, etc.

Chemical Industry: Ammonia synthesis furnace, fertilizer furnace, synthetic rubber furnace, etc.

Power Industry: Boiler, flue gas desulfurization unit, garbage incineration furnace, etc.

For a fast and competitive quotation on high-quality refractory products, contact Kerui Refractory today. Our expert team is ready to assess your requirements and provide customized solutions tailored to your project’s needs. We ensure quick response times, cost-effective pricing, and reliable technical support. With years of industry experience and a commitment to customer satisfaction, Kerui Refractory delivers durable and high-performance materials for steel, cement, glass, and other high-temperature applications. View more videos about company and products.