High Alumina Castable Feature
High alumina refractory castable is one of the most widely used castables.the key factors of refractory castable are thermal shock resistance, fire resistance and wear resistance.
High alumina castable has the characteristics of high fire resistance, low air tightness, thermal shock resistance and corrosion resistance. The wear resistance of refractory castables with different densities is different. Corrosion resistance is mainly due to the addition of other materials with different components so that it has a lot of hard indicators.
The matrix of high alumina raw materials is different, so the castable matrix produced can be divided into high and low. It can be used as lining in boilers, blast furnaces, hot stoves, heating furnaces, ceramic kilns and other kilns. Nowadays, many high alumina castables manufacturers adopt micro-powder technology. The refractory castable has low calcium content and good strength.
Water consumption during construction is low, only ordinary castables and half. Generally, the amount of water added is 6%, which will increase the density of castables and reduce the porosity.
High aluminium castables not only have high strength at room temperature, but also do not decrease after being treated at medium and high temperature. The strength of high aluminium castables is 3-5 times higher than that of traditional refractory castables.
It also has good volume stability at high temperature, although it is dried and calcined by users in the process of using. But the density does not shrink.
The price of
high alumina castables is determined by the density. Generally, the castables produced by underfired or low-density high aluminium castables are relatively low. If the castables with high density are higher, the price will be relatively high.
That is to say, the price of
high aluminium castable is determined by its density and aluminium content.
