One of the important working properties of high alumina refractory brick is the strength structure at high temperature. The softening temperature under load increases with the content of Al2O3. High alumina refractory brick sale, high quality products, reasonable price concessions, certification qualifications complete, welcome to purchase.
High alumina refractory brick sale, alumina content in 48% above belongs to neutral refractory brick. It is formed and calcined from bauxite or other raw materials with high alumina content. High thermal stability, refractory brick in 1770℃ above. Good slag resistance, used for lining steelmaking furnace, glass furnace, cement converter, etc. The product has the advantages of small creep at high temperature, strong erosion resistance, good thermal shock stability, etc.
The production process of high alumina refractory brick and clay brick is similar. But the difference is that the proportion of clinker in the ingredients is higher, up to 90 ~ 95%. Before crushing the clinker grading sorting and screening, firing temperature is higher, such as Ⅰ,Ⅱ high alumina brick. With tunnel kiln firing when the general is 1500 ~ 1600 ℃.
As we know, high alumina refractory brick for sale, the series of refractory brick than clay brick and semi- silicon brick refractory are higher. Up to 1750~1790℃, belongs to the senior refractory. Al2O3 in high alumina refractories is high, with less impurity and less fusible glass. So the softening temperature under load is higher than that of clay bricks.
There are more Al2O3 in high alumina refractory bricks, which are close to neutral refractory materials. And can resist the erosion of acidic slag and alkaline slag. However, due to the SiO2 contained in them, the resistance of alkaline slag is weaker than that of acidic slag.
High alumina bricks introduction:
The refractory degree of refractory brick is different from the melting point, which is the temperature when the liquid phase and solid phase of the crystal are in equilibrium. Most refractory bricks are heterogeneous materials without a certain melting point.
When it began to appear liquid phase to complete melting is a gradual process, in a fairly wide range of high temperature, solid and liquid phase coexist, so the characteristics of refractory brick softening and melting at high temperature, can only be measured by the refractoriness.
Therefore, the refractoriness is the temperature at which the polyphase reaches a certain softening degree. Although refractoriness is an important technical index to evaluate refractory brick, it cannot be used as the upper limit of refractory brick temperature.
The high alumina refractory brick sale, that is, alumina content of 48% or more of a silicate aluminum refractory material. It is formed and calcined from bauxite or other raw materials with high alumina content. High thermal stability, fire resistance above 1770℃, good slag resistance. This serirs of refractory brick is the most widely used type of refractory brick. Therefore, the price of high aluminum brick directly affects the production cost of enterprises.
Our company is professional refractory material manufacturer, rich production experience, strong technical force, refractory products export more than 60 countries and regions, welcome to consult and purchase.