Advantages and applications of alumina ceramic tubes for furnaces

Time：202025-05-30

The application of alumina ceramic tubes in furnaces has become a key material for improving thermal energy efficiency, equipment life and process accuracy due to its unique physical and chemical properties.

Alumina ceramic tubes have significant advantages in furnace applications, mainly reflected in high temperature resistance, corrosion resistance, wear resistance, high strength, good insulation and strong thermal stability. Its application scenarios are wide, covering industrial furnaces, high temperature experimental equipment, chemical reaction equipment and aerospace thermal protection systems.

Alumina ceramic tubes for furnaces produced by Mingrui Ceramics

The following is a specific analysis:

Advantages

1. High temperature resistance:

Alumina ceramic tubes have extremely high melting points, usually reaching around 2050℃, and can maintain stable physical and chemical properties in extremely high temperature environments. This makes it an ideal choice for furnace applications that need to withstand high temperatures, such as high temperature furnaces, heat exchangers, etc.

2. Corrosion resistance:

Alumina ceramic tubes have good resistance to corrosive media such as acids and alkalis, and can be used for a long time in harsh chemical environments without corrosion. This feature gives it a significant advantage in furnace applications in the chemical, metallurgical and other industries.

3. Wear resistance:

The hardness of alumina ceramic tubes is very high, reaching level 9, which is more than 8 times that of steel. This makes it have excellent wear resistance when conveying materials with high abrasiveness, such as ash, coal powder, mineral concentrate, etc., which can greatly extend its service life.

4. High strength and stability:

Alumina ceramic tubes have high mechanical strength and thermal stability, can maintain structural integrity under high temperature and high pressure conditions, and are not prone to deformation or cracking.

5. Insulation performance:

Alumina ceramic tubes have good insulation performance and can withstand high voltage and high frequency electric fields. They are suitable for furnace applications that require electrical isolation.

6. Low thermal expansion coefficient:

Alumina ceramic tubes have a low thermal expansion coefficient, which can maintain a small dimensional change when the temperature changes, thereby reducing the risk of cracking caused by thermal stress.

Applications

1. Industrial furnaces:

Alumina ceramic tubes can be used to manufacture furnaces, heat exchangers, pipes and other components of industrial furnaces, withstand the erosion of high temperature and corrosive media, and improve the service life and efficiency of the furnace.

2. High temperature experimental equipment:

In the laboratory, alumina ceramic tubes can be used for refractory pipes, furnace insulation pipes, etc. of high temperature experimental equipment to ensure the accuracy and reliability of the experiment.

3. Chemical reaction equipment:

Alumina ceramic tubes can be used to manufacture reactors, mass transfer equipment, etc. of chemical reaction equipment, withstand the erosion of corrosive media such as acids and alkalis, and ensure the smooth progress of the reaction.

4. Aerospace thermal protection system:

In the field of aerospace, alumina ceramic tubes can be used to manufacture thermal protection systems for high temperature engine nozzles, turbine blades and other components to protect components from erosion by high temperature airflow.

The long-term use temperature of alumina ceramic tubes reaches 1600℃, which is much higher than that of metal and ordinary ceramic materials. The dimensional change is very small at high temperature, avoiding thermal stress cracking, resisting strong acid (such as sulfuric acid), strong alkali and molten salt corrosion, and extending the life of alumina ceramic tubes in chemical reactors by more than 50%. The Mohs hardness is 9, and the ability to resist particle erosion is better than that of metal.

information

Top

Dongguan Mingrui Ceramic Technology Co., Ltd.
TEL：+8618122974730
MB：+86 181 2297 4730 Tel：+86 746 3386888
Skype：+86 181 2297 4730
Email：admin@cerampart.com
ADD：No. 21, Chuangxing Road, Shangsha Second Industrial Zone, Chang'an Town, Dongguan City