¿Cuáles son la composición mineral y las características de los ladrillos refractarios con alto contenido de alúmina??

El ladrillo refractario con alto contenido de alúmina es un material refractario con excelente rendimiento.. Tiene alta resistencia al fuego., buena resistencia al desgaste, y estabilidad química. It is suitable for the construction and repair of various high-temperature industrial furnaces.

Mineral composition of high alumina fire brick

High-alumina fire brick is mainly composed of high-alumina bauxite containing hydrous alumina minerals (monophane, gibbsite, etc.): sillimanite group minerals (including kyanite, andalucita, silimanita, etc.); Artificial synthetic raw materials, such as industrial alumina, synthetic mullite, fused corundum, etc..

Characteristics of high alumina refractory bricks

1. Obstinación
   The refractory resistance of ladrillos con alto contenido de alúmina is higher than that of clay bricks and semi-silica bricks, reaching 1750~1790℃, a high-grade refractory material.

2. Temperatura de ablandamiento de carga
   Because high-aluminum products have high AI203, bajas impurezas, y vidrio menos fusible, the load-softening temperature is higher than that of clay bricks. Sin embargo, because the mullite crystals do not form a network structure, La temperatura de suavizar la carga aún no es tan alta como la de los ladrillos de sílice.
3. Resistencia a la escoria
   High alumina bricks contain more AI203, which is close to neutral refractory materials and can resist acidic and alkaline slag erosion. Because it contains Si02, its ability to resist alkaline slag is weaker than that of acidic slag.