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Fused cast AZS brick for glass furnace

Model Number: AZS33/36/41
Certification: ISO9001
Minimum Order Quantity: 1 TONS



Fused AZS bricks, the full name of which is Electrically Fused Alumina-Zirconia-Silicate Refractory Brick, are high-performance, high-temperature and corrosion-resistant refractory materials. They are widely used in glass melting furnaces, ceramic industries, and other fields that need to withstand extreme high temperatures and chemical corrosion environments. This article will provide a detailed introduction to their composition, characteristics, manufacturing process, applications, and development prospects.

1. Composition and characteristics of fused AZS bricks

Fused AZS bricks are mainly composed of alumina (Al2O3), zirconium oxide (ZrO2), and silicate (SiO2), of which alumina and zirconium oxide provide excellent high-temperature stability and mechanical strength, while silicate ensures the material's corrosion resistance and good thermal shock stability. According to the different zirconium oxide content, fused AZS bricks are usually divided into several grades, such as AZS-33#, AZS-41#, and AZS-36#, and the numbers represent the mass percentage of zirconium oxide.

High temperature resistance: Due to the special composition, fused AZS bricks can maintain structural stability in high temperature environments up to 1700°C or above.

Erosion resistance: It shows strong corrosion resistance in high-temperature molten glass or other corrosive media, especially resistance to alkaline substances.

Thermal stability: Good thermal expansion coefficient matching and thermal shock stability reduce cracks and peeling caused by rapid temperature changes.

Mechanical strength: Even under long-term high-temperature operation, it can maintain high mechanical strength to ensure the stable operation of the equipment.

2. Manufacturing process of fused AZS bricks

The production process of fused AZS bricks includes raw material ratio, electric smelting, casting, cooling, cutting and processing:

Raw material ratio: Accurately weigh raw materials such as alumina, zirconium oxide and silicate and mix them in a specific proportion.

Electric smelting: Put the mixed raw materials into an electric furnace and heat them to about 2500°C or above through a high-temperature arc to completely melt and react the raw materials to form a uniform melt.

Casting: The molten material is quickly poured into the mold and solidified by rapid cooling.

Post-processing: including cooling, cutting, grinding, etc. to achieve the required size and surface finish.

3. Application fields of fused AZS bricks

Due to their unique properties, fused AZS bricks play an important role in multiple high-temperature industrial fields:

Glass industry: As a key refractory material for glass melting furnaces, it is used in melting pools, launders, kiln crowns and other parts, directly contacting high-temperature molten glass to extend the service life of the melting furnace.

Ceramic industry: In the firing process of some high-performance ceramic products, it is used as kiln furniture or lining materials.

Metallurgical industry: In specific metallurgical furnaces, it is used as a high-temperature and corrosion-resistant lining material.

4. Development prospects of fused AZS bricks

With the advancement of materials science and the improvement of environmental protection requirements, the research and development of fused AZS bricks is moving towards longer life, lower energy consumption and more environmental protection. For example, by optimizing the raw material formula and improving the manufacturing process to improve the comprehensive performance of the product; developing new AZS materials to adapt to higher temperature and more corrosive use environments; and exploring recycling technologies to reduce waste emissions in line with the requirements of sustainable development.

In short, as an important member of the refractory field, fused AZS bricks occupy an indispensable position in many high-temperature industrial applications due to their excellent high-temperature performance and corrosion resistance, and have great potential for future development.

Production Equipment

Production capacity: Our factory actively response to government environmental protection policy, we designed and built the fully automatic controlled high temperature gas tunnel kiln (1700℃), and got capacity of annual output 70,000 tons of high quality refractory products.

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Packing Details
Packing details:

★Bricks: Fumigated wooden pallet with log paperboard covered and stainless steel band strapping, the whole outside is wrapped with thermoplastic film. Or carton packaging.

★Wooden pallet size: usually 92*92cm (standard brick)

★Castable: Ton bag with rain film and 25kg bags inside

★Or according to customer’s requirements


★Port of dispatch: Tianjin port; Qingdao port

★Delivery time: According to customer’s demand or two sides negotiate

Our Services

We provide you 

★Timely response: Timely response to your inquiry within 24 hours and provide solution. 

★Competitive Price: Make the products competitive in your market. 

★Free sample: Free sample are offered, trial order are accepted for quality evaluation. 

★Strict quality control: We set Quality Management System, from the raw material to finished products, produce high quality products according to chemical & physical specifications strictly to satisfy customers’ needs.

★Fast delivery time: Within 3-30 days according to your quantity after receiving your advance payment. 

★ Professional services: Provide pictures from order to delivery. Inspect report by our country’s designated authority and oversea services if necessary.

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Certification:  (ISO 9001:2015)



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