Magnesia hercynite brick is a new generation of large-scale rotary kiln firing zone with chromium-free alkaline refractory material, the use of iron oxide in magnesium oxide solid melting characteristics using high-purity spinel as a raw material, high-temperature sintering formed chromium-free Environmentally friendly products.

Magnesia hercynite bricks use high-purity magnesia sand and aluminum-iron spinel sand as the main raw materials. After reasonable gradation, high-pressure molding, strict control of firing temperature and firing atmosphere, the product has good flexibility and thermal shock stability , No hexavalent chromium pollution, used in cement kiln firing zone.

Magnesia hercynite bricks have the characteristics of high compressive strength, good thermal shock stability, good thermal creep resistance, resistance to erosion and penetration, and high load softening temperature. At the same time, they are also easier than direct combination of magnesia chrome bricks. The characteristics of the sticky kiln skin can effectively solve the problem of hexavalent chromium generated during the use of magnesia-chrome bricks in cement kilns, thereby causing pollution to the environment.

It has been proved by use that it not only has a long life, the residual brick surface is smooth, but also has no chromium pollution.

Features

1. Good anti-erosion performance, there is no phenomenon of alkali cracking and looseness in use.

2. The kiln skin is formed quickly, the kiln skin is stable and does not fall off.

3. Good thermal shock resistance, can improve the resistance to the temperature fluctuation of the cement kiln.

4. The thermal conductivity of the magnesia-iron-alumina spinel brick is small, reducing the surface temperature of the rotary kiln barrel, and the energy saving effect is remarkable.

Physical And Chemical Indicators