Refractory Bricks for Glass Melting Furnaces

Glass melting furnaces are the core equipment in glass production, with internal temperatures consistently exceeding 1600℃, and are subject to chemical erosion from molten glass and batch materials. Therefore, selecting suitable refractory bricks is crucial for ensuring furnace lifespan and stabilizing glass quality.

1. Performance Requirements of Refractory Bricks for Glass Melting Furnaces

The interior of glass melting furnaces not only experiences high temperatures but also continuous chemical erosion and mechanical scouring from alkaline vapors and the flow of molten glass. Therefore, the furnace lining material must possess the following three characteristics:

① High refractoriness;

② Excellent erosion resistance;

③ Good thermal shock stability.

Furthermore, due to significant differences in operating conditions across different parts of the melting furnace, different areas require refractory bricks with varying performance grades. The furnace walls and bottom, which come into contact with molten glass, require dense materials with strong impermeability; the upper structure prioritizes high-temperature strength and creep resistance.

2. Refractory Brick Selection for Different Parts

(1) Furnace Walls and Bottom

In the melting section, AZS electrofused bricks with extremely high erosion resistance are typically used on the furnace walls and bottom to withstand the intense scouring from the high-temperature molten glass.

(2) Regenerator Chamber

In the regenerator chamber, magnesia bricks or magnesia-chrome bricks with good creep resistance are often selected to adapt to airflow heat exchange.

(3) Arch Zone

Silica bricks are often used here because they have excellent high-temperature load softening points.

Only by using high-quality refractory bricks can the material maintain structural integrity under long-term alternating thermal stress, thereby effectively extending the service life of the furnace and reducing maintenance frequency.

3. Procurement Considerations

When purchasing refractory bricks, glass companies should comprehensively consider the production qualifications, technical strength, and industry reputation of the refractory brick manufacturers. High-quality refractory brick suppliers can not only provide stable product quality but also provide matching solutions based on the furnace design.

In addition, comprehensive after-sales support and rapid response capabilities are equally important. It is recommended to compare multiple suppliers and prioritize those with quality system certification and long-term supply experience, thereby laying a solid foundation for the safe operation of the glass melting furnace.

Henan Ruitai Lianxin Refractory Materials Co., Ltd. has 20 years of experience in refractory material production. They not only provide customers with high-quality refractory bricks that meet quality standards, but also offer solutions tailored to specific kiln operating conditions.

Please feel free to contact us if you have any needs. Choosing Ruitai Lianxin means choosing strength.