What is the properties and composition of high alumina bricks

Posted by ariel li on September 11th, 2017

Composition of high alumina bricks

High alumina bricks according to resource conditions and product requirements,  can be used the following types of raw materials:

To water-containing aluminum oxide minerals (diaspore, gibbsite, etc.)

As the main composition of the high bauxite; Si line stone minerals (including kyanite, andalusite, silliman stone, etc.); Synthetic raw materials, such as industrial alumina, synthetic mullite, fused corundum and so on. China's high alumina bauxite is rich in resources and excellent in texture. The resulting high alumina vanadium is mainly a mixture of two diamonds (α-Al2O3 · H 2 O) and kaolinite.

Properties of high alumina bricks

a, refractoriness

High alumina brick refractoriness is higher more than clay bricks and semi-silica brick, up to 1750 ~ 1790 ℃, are high refractory materials.

b, load softening temperature

Because high alumina bricks products in the high Al2O3, less impurities, the formation of fusible glass less, so the load softening temperature is higher more than clay brick, but the mullite crystallization does not form a network of organizations, so the load softening temperature is still no silicone bricks.

c, slag resistance

High alumina refractory brick in the high Al2O3, close to the neutral refractory material, can resist the acid slag and alkaline slag erosion, due to it contains SiO2, so the ability of alkali-resistant slag is  weak than the ability of acid-resistant slag.

More high alumina bricks specification:

http://www.ruizhirefractory.com/en/product/high-alumina-brick.html

Email: sales@ruizhirefractory.com