Introduction of magnesia alumina spinel brick

The magnesia alumina spinel brick is a high-grade alkaline refractory material with periclase and spinel as the main minerals, which is formed by high pressure molding and high temperature sintering. combine. It has the characteristics of high strength, excellent thermal shock stability, and strong resistance to chemical corrosion. Mainly used in the upper and lower transition zone of cement rotary kiln and thermal kiln equipment that requires high temperature resistance and thermal shock.

Bauxite-based sintered magnesia-aluminum spinel is made of high-quality bauxite with Al2O3 content of more than 76% and high-quality light-burned magnesium powder with MgO content of more than 95%. It is sintered at high temperature and has high bulk density, high mineral phase content, well-developed grains, uniform structure and stable quality. Magnesium-aluminum spinel has good corrosion resistance, strong corrosion and spalling ability, good slag resistance, abrasion resistance, good thermal shock stability, high temperature resistance and other performance characteristics. It is an ideal raw material for the production of refractory products such as magnesia-aluminum spinel bricks, ladle lining bricks, ladle castables and other refractory products used in the high temperature zone of cement rotary kiln. Magnesium-aluminum spinel is widely used in refractory materials, iron and steel smelting, cement rotary kilns and glass industrial kilns.

It has good anti-erosion ability, anti-abrasion ability and good thermal shock stability. Its main uses: first, to replace magnesia-chromium sand to make magnesia-aluminum spinel bricks for cement rotary kiln, which not only avoids chromium pollution, but also has good spalling resistance; second, it is used to make ladle castables, which greatly improves Corrosion resistance of steel linings. It is widely used in refractory materials for steelmaking. The preparation of high-quality pre-synthetic spinel provides a new raw material for the production of amorphous and shaped high-purity refractories.