High-alumina refractory brick is a name that distinguishes it from other refractory bricks in terms of material, according to the different aluminum content, with an aluminum content of 48% as a dividing line, the aluminum content of 48% or less is generally known as clay refractory bricks, the above is called high-alumina refractory bricks.
High-alumina refractory bricks are divided into different levels of standards, the same aluminum content to classify the refractory brick content of 48-60% of aluminum oxide is called three high alumina refractory bricks (three high alumina brick), aluminum oxide content of 60-75% between the two high alumina refractory bricks (two high alumina brick), aluminum oxide content of 75 or more is called a high alumina refractory bricks (a high alumina brick). . According to the use of the application industry, the aluminum content of high alumina refractory bricks have a higher standard requirement, the aluminum content of 80% or more is often called extra high alumina bricks.
The production process of high alumina refractory bricks is the same, and the physical and chemical performance indicators of different grades of high alumina refractory bricks are different, including refractoriness, load softening temperature, aluminum content, bulk density, compressive strength, and line change rate. In these physical and chemical indicators, many purchasers customers in the purchase, only require aluminum content and refractoriness this is wrong, to determine the service life of high alumina refractory brick is the main factor of aluminum content, the second is the load softening temperature, load softening temperature is to determine the use of this brick environmental temperature, because the refractoriness of high alumina refractory brick can generally reach more than 1700. And the load softening temperature is very different, the third-grade high alumina may only be 1400 degrees, and the special-grade high alumina brick can reach 1550 degrees.
Then we will talk about the application of high alumina refractory bricks, high alumina bricks as a basic material for high-temperature industry, basically industrial furnaces will be used, but the shape and sizes of the different.
Common steel metallurgy industry, glass kilns, cement rotary kilns, steel blast furnaces, hot blast furnaces, special steel smelting electric furnaces, blast furnaces, and so on.
The price of high alumina refractory bricks is determined by the material and the load softening temperature, in addition to some special high alumina bricks. It is necessary to consider the difficulty of the molding process in conjunction with the drawings.
