Corundum Refractory Bricks: Extending The Service Life Of Ladles And Furnace Linings

Steel ladles and industrial furnace linings are subjected to long-term erosion by high-temperature molten slag and mechanical scouring, resulting in particularly prominent wear and tear issues. However, choosing the right refractory material is the key to solving this challenge. Corundum refractory bricks, with their superior performance, are becoming the preferred choice for an increasing number of high-temperature kilns.

1.Characteristics of corundum bricks: Excellent material basis

The main component of corundum refractory bricks is alumina (Al2O3), which usually accounts for more than 90%. Alumina is a substance with extremely high hardness and chemical stability. Therefore, corundum bricks exhibit high refractoriness (above 1850℃), low porosity, and excellent resistance to acid and alkali slag erosion.

In addition, its high-temperature compressive strength and wear resistance are also superior to those of traditional clay bricks or high-alumina bricks. Therefore, it is suitable for harsh working conditions such as the working layer of steel ladle, hot spots of electric arc furnace, and firing zone of cement rotary kiln.

Although corundum bricks are more expensive than conventional refractory bricks, their long lifespan often offsets the initial investment cost.

2.Matching the type of corundum brick with the working conditions

Corundum refractory bricks can be classified according to their alumina content into high-purity corundum bricks, 99% corundum bricks, 90% corundum bricks, and corundum-mullite bricks, etc. The numbers represent the alumina content.

Ordinary corundum bricks typically have an Al₂O₃ content of 90%-92%, making them suitable for ladle slag line areas. High-purity corundum bricks can have an alumina content of up to 99.3%. Therefore, they are often used as linings for refining furnaces and chemical gasification furnaces.

Meanwhile, high-quality refractory brick manufacturers usually offer standard brick shapes and custom-made brick services, allowing users to select matching models based on the furnace lining structure design.

3.Procurement considerations and supplier selection

The price of corundum bricks is directly affected by the purity of raw materials, sintering temperature, and production volume. Therefore, when purchasing, the cost-effectiveness should be comprehensively evaluated rather than simply comparing unit prices.

When selecting a corundum brick manufacturer, the first step is to verify its quality control system and testing equipment. Secondly, it is essential to confirm whether the manufacturer has a stable supply capacity and provides technical support services. Choosing a suitable refractory brick manufacturer is crucial for maximizing production efficiency.

Henan Ruitai Lianxin Refractory Materials Co., Ltd. not only provides corundum refractory bricks, but also high-alumina bricks, magnesia series bricks, zirconia series bricks, thermal insulation materials, refractory castables, ramming mixes and other high-quality refractory materials.

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