Description
High alumina bricks, also known as alumina refractory bricks, are a type of refractory material with an alumina content of more than 48%.
High alumina bricks are mainly made from preferred bauxite clinker, which is sintered at temperatures ranging from 1420 to 1530 °C. High alumina bricks are well suited for industrial applications that require resistance to high temperatures, abrasion and corrosion.
High alumina refractory bricks are ideally suited for industrial applications that require high temperature, abrasion and corrosion resistant environments.
They are commonly used in the construction of furnaces, kilns, incinerators and other high-temperature equipment as linings or insulation.
Application
The versatility, high temperature resistance, chemical stability and excellent refractory properties of high alumina bricks make them indispensable for a wide range of industries requiring durable and reliable refractory materials.
Features:
High alumina content
The main component of high alumina bricks is alumina (Al2O3), which is usually in the range of 50% to 95% or even higher. This high alumina content gives the bricks excellent refractory properties.
High Temperature Resistance
High alumina bricks can withstand refractory temperatures of over 1770°C, making them suitable for applications with temperatures in excess of 1500°C (2732°F). They maintain strength and structural integrity even at high temperatures.
Thermal Stability
High alumina bricks have excellent thermal stability and can withstand repeated thermal cycling without significant degradation. Their low thermal expansion reduces the risk of cracking or spalling due to thermal stress.
Chemical Resistance
High Alumina Bricks have excellent chemical resistance to a wide range of corrosive media such as acids, alkalis and gases. They can withstand chemical reactions and maintain their integrity in aggressive environments.
Abrasion Resistance
These bricks have good abrasion resistance and can withstand mechanical wear caused by solids, liquids or gases in industrial processes. They are less susceptible to erosion or erosion-related failures.
Low porosity
High alumina bricks have low porosity, which means they have a dense and compact structure. This property helps to minimize the penetration of molten materials and gases, enhancing their resistance to corrosion and thermal shock.
Good insulating properties
High alumina bricks provide good thermal insulation, minimizing heat transfer and improving energy efficiency in high-temperature applications.
Outstanding strength and mechanical properties
High-alumina bricks have high mechanical strength and can withstand mechanical loads and structural stresses. They maintain their shape and integrity under pressure.
Easy to install and maintain
High-alumina bricks are relatively simple to install and maintain. They can be molded and cut to fit different equipment configurations, and damaged bricks can be replaced individually without affecting the entire liner.
