Inside the refractory bricks, clay bricks, high alumina bricks, magnesia bricks, which kind of bricks have high refractory temperature? In the refractory bricks, the refractory temperature should be distinguished from the load softening temperature. One of the regenerative bricks is to test the raw material content and refractory degree of the product, the other is to simulate the normal service temperature. Which kind of bricks has the highest refractory temperature? See the details below.
Fire resistance of clay bricks fluctuates from 1580 1750 C and alumina content is 48%. Fire bricks are made of refractory clay and its clinker by crushing, mixing, shaping, drying and acetylene feeding. Clay products belong to weak acidic refractory products, and their acidity increases with the increase of SiO 2 content. It has a certain corrosion resistance to acidity, but a poor resistance to alkaline erosion.
A refractory brick with high alumina content of more than 48% and refractoriness of 1770-1790 C. Its characteristics are: high compressive strength, high fire resistance. It has good impact resistance, corrosion resistance, slag resistance, long service life, high loading temperature and high structural strength at high temperature.
The refractoriness of magnesia bricks is over 2000 C. The products are fired at high temperature around 1500 C after press forming with magnesia as the main raw material. Because of its good high temperature performance and strong resistance to metallurgical slag, it is widely used in steel-making lining and mixing furnace in iron and steel industry. At present, the permanent layer of converter is mostly fired magnesia brick and magnesia-silicon brick.