The internal temperature of steelmaking furnaces often exceeds 1600℃, and ordinary materials cannot withstand such an extreme environment. Therefore, refractory bricks became the core material for furnace construction. High-alumina refractory bricks have become a key choice for steelmaking furnace linings due to their excellent performance.
1. High-alumina refractory bricks
Steelmaking furnaces must not only resist the erosion of high-temperature molten steel and slag, but also withstand frequent temperature changes and mechanical erosion.
High-alumina refractory bricks typically have an alumina content of over 48%, thus their refractoriness can reach 1750℃-1790℃.
Moreover, the slag resistance of this refractory brick increases with the increase of alumina content. Therefore, over 70% of high-alumina bricks are commonly used in key parts of furnace linings.
High-alumina refractory materials
Compared to clay bricks, high-alumina refractory bricks have a higher load softening temperature, making them less prone to deformation under continuous high-temperature loads.
In addition, although its thermal shock stability is not as good as some basic bricks, it can still meet the pace of conventional steelmaking by optimizing the production process.
2. Core Advantages
From a chemical composition perspective, high-alumina refractory bricks are neutral to slightly acidic materials. Therefore, it is resistant to both acidic and alkaline slags, making it highly adaptable.
Meanwhile, its room temperature pressure resistance is usually above 50MPa, which facilitates transportation and construction.
Because alumina resources are relatively abundant, high-alumina refractory bricks are generally cheaper than special products such as magnesia-carbon bricks, giving them a significant cost-performance advantage.
3. Refractory brick pricing and supplier selection
The price of refractory bricks is directly affected by factors such as alumina content, dimensional accuracy, and order quantity. Therefore, when making a purchase, it is necessary to specify the technical parameters rather than simply comparing prices.
Steelmaking Furnace
In addition, different refractory brick suppliers have significant differences in their availability and technical services. Therefore, its production scale and quality control system should be assessed. High-quality refractory bricks require not only assessment of specifications but also evaluation of batch-to-batch stability.
Choosing a suitable refractory brick supplier requires comprehensive consideration of both quality stability and delivery capabilities. Long-term cooperation can reduce overall costs while ensuring the reliable service life of steelmaking furnace linings.
Henan Ruitai Lianxin Refractory Materials Co., Ltd. has 20 years of experience in refractory material production.
It can not only provide customers with high-quality refractory bricks that meet the required standards, but also provide the most suitable kiln operating conditions solutions.
Please feel free to contact us if you have any needs. Choosing Ruitai Lianxin means choosing strength.
