What refractory bricks can be used in the cement industry?

1. Anti-falling high alumina bricks

High alumina refractory brick is an aluminum silicate refractory material with an alumina content of more than 48%. It is formed and calcined from alumina or other raw materials with high alumina content. It has high thermal stability and refractoriness above 1770℃. Good slag resistance. Mainly used for lining blast furnaces, hot blast furnaces, electric furnace roofs, blast furnaces, reverberatory furnaces, and rotary kilns. In the cement industry, it is often used in transition zones, differentiation zones, and kiln door covers of small cement kilns to resist wear and tear.

2: Magnesia chrome brick

Generally, magnesia chrome bricks are made of sintered magnesia (MgO content between 89% and 92%) and refractory grade chromium bricks as the main raw materials and fired at 1550℃~1600℃. The refractory temperature of magnesia chrome bricks is greater than 2000℃, but the load softening temperature is generally between 1550℃~1600℃. Generally, magnesia-chrome bricks have simple production technology and relatively low price, and are widely used in high-temperature zones of cement rotary kilns.

Three: Magnesite spinel bricks

Magnesia-iron spinel bricks are made of high-purity magnesia and iron-aluminum spinel as the main raw materials. The firing temperature and firing atmosphere are strictly controlled, so that the product has good flexibility and thermal shock stability. The performance and corrosion resistance of the kiln-hung bricks exceed those of high-quality magnesia-chrome bricks. This product is an updated product for the lining of large dry cement rotary kilns. It is widely used in the firing zone of large and medium-sized cement rotary kilns.

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