Introduction to High Alumina Bricks and Refractory Bricks

High alumina brick is a high-temperature refractory material, which is mainly made of high-purity bauxite through smelting, shaping, drying, and sintering processes. It has good high-temperature, acid, alkali corrosion, and wear resistance. High alumina bricks are widely used in high-temperature equipment such as furnaces, kilns, converters, electric furnaces, and heat treatment furnaces to meet the requirements for use under high-temperature conditions. This article will detail the manufacturing process, performance characteristics, application fields, and other related content of high alumina bricks.

Manufacturing process

High alumina bricks are mainly made from high-purity bauxite through crushing, mixing, shaping, drying, and sintering processes. Its alumina content is above 48%. During the manufacturing process, the sintering temperature of high-alumina bricks can be as high as over 1750°C, allowing them to remain stable in high-temperature environments.

Performance characteristics

1. High-temperature resistance: The high aluminum content and dense structure of high alumina bricks give them excellent high-temperature resistance and can be used for a long time in high-temperature environments without melting, softening, or expansion.

2. Acid and alkali corrosion resistance: High alumina bricks contain a large amount of aluminum oxide, which gives them good acid and alkali corrosion resistance.

3. Anti-wear performance: High-aluminum bricks have high surface hardness and are not easy to wear and break.

4. Good thermal conductivity: High alumina bricks have low and excellent thermal conductivity.

Application areas

High alumina bricks are widely used in high-temperature equipment such as furnaces, kilns, converters, electric furnaces, and heat treatment furnaces to meet the requirements for use under high-temperature conditions. In steel, metallurgy, chemical industry, ceramics, and other industrial fields, high alumina bricks are an indispensable high-temperature refractory material. They can exert good high-temperature, acid, alkali corrosion, and wear resistance in high-temperature environments.