Refractory is an indispensable lining material in the kiln, and high aluminum brick as one of them, its role and market recognition is beyond doubt, almost all the furnace need to use high aluminum brick, but many people only heard of refractory materials, but do not know refractory brick, and even more many people do not know how to use high aluminum brick, do not know how to use it, where to use it. Some people need to use but do not know how to choose, today we will meet the resistant star – high aluminum brick.
PART 01
What is high aluminum brick?
When it comes to high aluminum bricks, we have to mention their unique chemical composition. High aluminum brick, as the name suggests, its alumina (Al₂O₃) content is significant, more than 48%, becoming one of its main components. On this basis, silicon oxide (SiO₂) also occupies an important position, and the two together form the cornerstone of aluminum-silicon refractories. Among many refractory bricks, high aluminum bricks have become the leader in the industry with their unique advantages.
So, what kind of material is high aluminum brick? It is a carefully designed and crafted refractory and high temperature resistant material with a specific shape and size. From the point of view of chemical properties, high aluminum bricks show neutral characteristics, which means that it is excellent in acid and alkali resistance. Even in a high temperature environment, it can still maintain stability and resist acid and alkali erosion. It is worth mentioning that the level of alumina content directly affects its corrosion resistance, the higher the content, the better the performance.
In addition, as a commonly used refractory material, the physical properties of high aluminum brick such as fire resistance temperature, high temperature softening temperature, strength and porosity are adjusted with the change of its content and structural composition. This allows high aluminum bricks to adapt to different industrial environments and application needs, becoming one of the indispensable materials in many fields.
In appearance, high aluminum bricks also show a variety of characteristics. Each manufacturer may show different colors because of different production processes and raw materials, such as yellow, beige, beige and so on. The few brown spots on the surface add a unique charm to the high aluminum brick.
Alumina content of each grade high alumina brick
A high alumina brick: alumina content in ≥75%
Secondary high alumina brick: alumina content is ≥65%
Tertiary high alumina brick: alumina content is ≥55%
Super high alumina brick: alumina content ≥80%
PART 02
High aluminum brick series types
There are many types of high aluminum bricks, according to the material, there are two or three high aluminum refractory bricks, anti-spalling high aluminum bricks, low creep high aluminum bricks, phosphate high aluminum bricks, low porosity high aluminum bricks, wear-resistant high aluminum bricks and so on. If according to the specifications and sizes, we are common and commonly used, such as T3 standard brick: 230*114*65mm, with large knife edge small knife edge high aluminum brick, big axe small axe high aluminum brick, high aluminum arch foot brick, high aluminum anchor brick, high aluminum hanging piece, casting with high aluminum sleeve brick, flow steel high aluminum brick, plug head high aluminum brick, high aluminum cup high aluminum brick and so on. Square (vertical) four high aluminum bricks, square (vertical) five high aluminum bricks, square (vertical) six high aluminum bricks, square (vertical) seven high aluminum bricks, square (vertical) eight high aluminum bricks, square (vertical) nine high aluminum bricks, square (vertical) 11 high aluminum bricks, square (vertical) 12 high aluminum bricks, Flat two high aluminum bricks, flat three high aluminum bricks, flat four high aluminum bricks, flat five high aluminum bricks, flat five high aluminum bricks, flat six high aluminum bricks, flat seven high aluminum bricks, flat eight high aluminum bricks, two high aluminum bricks, custom shaped high aluminum bricks and so on. According to the size classification, due to the advantages of high aluminum brick performance and wide application, brick types are very diverse, and can also be customized according to the furnace type requirements.
