Application of refractory cement in high temperature furnaces
2024-09-19 09:53:18
Refractory cement is a building material specially used in high temperature environments. It is widely used in high temperature furnaces, kilns and furnace linings in metallurgy, chemical industry, ceramics and other industries. Its main characteristics are high temperature resistance, corrosion resistance, high strength and good thermal stability. The following will discuss in detail the properties, types and applications of refractory cement in high temperature furnaces.
1. Properties of refractory cement
High temperature resistance: Refractory cement can withstand temperatures up to 1600°C and is suitable for various high temperature working environments.
Strength: Refractory cement can maintain good mechanical strength at high temperatures to ensure the stability of the furnace structure.
Thermal expansion: Its low thermal expansion coefficient can effectively avoid cracks caused by temperature changes.
Corrosion resistance: Refractory cement can resist the erosion of acids, alkalis and other chemicals, and extend the service life of the furnace body.
2. Types of refractory cement
According to different ingredients and uses, refractory cement can be divided into several types:
Aluminate refractory cement: The main component is calcium aluminate, which has good refractoriness and corrosion resistance and is suitable for the lining of high temperature furnaces.
Silicate refractory cement: silicate is the main component, suitable for medium temperature environment.
High aluminum refractory cement: high aluminum content enables it to maintain excellent strength and stability at high temperature, and is often used in steel smelting furnaces and cement kilns.
Special refractory cement: such as magnesium refractory cement, suitable for environments with magnesium alloys or other metal materials in the furnace.
III. Application of refractory cement in high temperature furnaces
Furnace lining: Refractory cement is often used for the lining of the furnace body, which can effectively insulate, reduce heat loss, and protect the furnace body from high temperature and chemical corrosion.
Furnace bottom: at the bottom of the high temperature furnace, refractory cement can withstand the pressure of heavy objects and prevent the furnace bottom from melting or deforming due to high temperature.
Joints and repairs: during the construction and maintenance of high temperature furnaces, refractory cement can be used to repair cracks and joints to maintain the integrity of the furnace body.
High temperature storage: in some high temperature storage equipment, refractory cement can be used as internal isolation material to ensure safe storage.
IV. Construction and maintenance of refractory cement
Construction preparation: before construction, the substrate should be cleaned and treated to ensure that the surface is free of oil and dust to improve adhesion.
Mixing and pouring: Mix refractory cement and water in proportion according to the instructions for use, stir evenly and pour quickly to avoid cement solidification.
Curing: Refractory cement needs to maintain appropriate humidity and temperature during the curing process, and it is usually recommended to be cured at around 25°C.
Regular inspection: Regularly check the surface and joints of refractory cement, and repair the cracks found in time to extend the service life.
V. Summary
The application of refractory cement in high-temperature furnaces is an indispensable part of modern industry. Its excellent high temperature resistance, strength and corrosion resistance make it an ideal choice in high temperature environments. With the development of science and technology, the performance of refractory cement has been continuously improved, providing more reliable material support for high-temperature industries. Through reasonable construction and maintenance, the service life and work efficiency of high-temperature furnaces can be greatly improved.
1. Properties of refractory cement
High temperature resistance: Refractory cement can withstand temperatures up to 1600°C and is suitable for various high temperature working environments.
Strength: Refractory cement can maintain good mechanical strength at high temperatures to ensure the stability of the furnace structure.
Thermal expansion: Its low thermal expansion coefficient can effectively avoid cracks caused by temperature changes.
Corrosion resistance: Refractory cement can resist the erosion of acids, alkalis and other chemicals, and extend the service life of the furnace body.
2. Types of refractory cement
According to different ingredients and uses, refractory cement can be divided into several types:
Aluminate refractory cement: The main component is calcium aluminate, which has good refractoriness and corrosion resistance and is suitable for the lining of high temperature furnaces.
Silicate refractory cement: silicate is the main component, suitable for medium temperature environment.
High aluminum refractory cement: high aluminum content enables it to maintain excellent strength and stability at high temperature, and is often used in steel smelting furnaces and cement kilns.
Special refractory cement: such as magnesium refractory cement, suitable for environments with magnesium alloys or other metal materials in the furnace.
III. Application of refractory cement in high temperature furnaces
Furnace lining: Refractory cement is often used for the lining of the furnace body, which can effectively insulate, reduce heat loss, and protect the furnace body from high temperature and chemical corrosion.
Furnace bottom: at the bottom of the high temperature furnace, refractory cement can withstand the pressure of heavy objects and prevent the furnace bottom from melting or deforming due to high temperature.
Joints and repairs: during the construction and maintenance of high temperature furnaces, refractory cement can be used to repair cracks and joints to maintain the integrity of the furnace body.
High temperature storage: in some high temperature storage equipment, refractory cement can be used as internal isolation material to ensure safe storage.
IV. Construction and maintenance of refractory cement
Construction preparation: before construction, the substrate should be cleaned and treated to ensure that the surface is free of oil and dust to improve adhesion.
Mixing and pouring: Mix refractory cement and water in proportion according to the instructions for use, stir evenly and pour quickly to avoid cement solidification.
Curing: Refractory cement needs to maintain appropriate humidity and temperature during the curing process, and it is usually recommended to be cured at around 25°C.
Regular inspection: Regularly check the surface and joints of refractory cement, and repair the cracks found in time to extend the service life.
V. Summary
The application of refractory cement in high-temperature furnaces is an indispensable part of modern industry. Its excellent high temperature resistance, strength and corrosion resistance make it an ideal choice in high temperature environments. With the development of science and technology, the performance of refractory cement has been continuously improved, providing more reliable material support for high-temperature industries. Through reasonable construction and maintenance, the service life and work efficiency of high-temperature furnaces can be greatly improved.