Application of artificial graphite block in cement rotary kiln

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Artificial Graphite


0.01mm or 0.07mm,etc


25 kg small bags into ton bags or ton bags


Good wear resistance, corrosion resistance, good thermal conductivity, etc.


Can be used in making heat exchanger, reaction tank, absorption tower, etc.

There are many kinds of artificial graphite and different production processes. In a broad sense, all graphite materials obtained by carbonization of organic matters and treated by high temperature after being treated with graphite can be collectively referred to as artificial graphite.In the narrow sense, artificial graphite usually refers to the massive solid materials prepared by batching.

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Artificial graphite is an industrial application as a sealing material. Graphite blocks are made from artificial graphite, which is produced by heating carbonaceous materials at high temperatures and pressures. Graphite has a low coefficient of friction, which improves its sealing capacity. This makes the material highly heat, corrosion and abrasion resistant, making it ideal for use in harsh environments.


Advantages of artificial graphite blocks in cement rotary kilns

(1) Wear resistance: the sealing of the kiln head and kiln tail is under normal conditions, and the temperature is 150 ~ 400 °C, but under abnormal conditions, it will exceed 350 °C. Temperature is a key external element that harms the damage speed of graphite blocks, and temperature manipulation is therefore difficult. Therefore, improving the intrinsic wear resistance of graphite blocks at high temperatures is a key way to increase their service life. Generally, the daily damage height to width ratio of graphite block is 1 ~ 2mm, if it can be reduced to 0.6-1mm, its service life can be extended several times.

(2) Compressive strength and ductility: The graphite block used to seal should be damaged in a normal and invalid way. However, many graphite blocks were not damaged, but they were reimbursed for crushing. All are generated in the whole process of transportation, and some appear in the application. It can be seen that its compressive strength is insufficient and its ductility is very large. Whether some new processing techniques or new adhesives can be used in the whole process of graphite material generation is very important to improve the physical properties of high graphite blocks at high temperatures of 350 °C.

(3) Thermal insulation capacity: When used in cement rotary kiln, graphite block provides an effective barrier to prevent gas escape, ensuring that the cement rotary kiln maintains the structure intact. These blocks are also used as insulation, preventing heat transfer between the cement rotary kiln and its surroundings.

The sealing ability of graphite blocks is attributed to their unique structure. These blocks consist of layers of graphite sheets. These plates are bonded together by strong covalent bonds, which makes them highly resistant to heat and chemicals.

Sealing performance of artificial graphite blocks

In the cement rotary kiln industry, graphite blocks are used in a variety of applications, including sealing kilns, coolers, and other high-temperature equipment. These blocks are placed between two metal surfaces, creating a tight seal that prevents gas and heat from escaping. This helps to increase the efficiency of the equipment while reducing emissions. Graphite blocks are also used to seal pipes and tanks, preventing leaks and reducing maintenance costs.

One of its unique properties is its ability to expand when heated. This is known as thermal expansion and it is a key feature of graphite blocks used in cement rotary kiln applications. When these blocks are exposed to high temperatures, they expand and form a tight seal that prevents gas and heat from escaping. Expansion adapts to the changing shape of metal surfaces, ensuring a tight seal at all times.

Artificial Graphite

Features of artificial graphite blocks

Artificial graphite, also known as synthetic graphite, is an artificial material made by heating a carbon-rich material, such as coal, petroleum coke, or carbon black, at high temperatures in the presence of a catalyst. The process produces high-grade graphite materials with consistent properties and free of impurities.

(1) In addition to excellent sealing ability, it also has the characteristics of long service life and low maintenance requirements. They can withstand temperatures up to 3000°C, making them ideal for use in applications where high temperatures are encountered.

(2) Graphite blocks made of artificial graphite are particularly useful because they have higher performance than natural graphite blocks. These blocks have higher density, better thermal and mechanical stability, and higher resistance to thermal shock and corrosion.

(3) Size of graphite blocks: They can be processed into precise dimensions and shapes, and their porosity and impregnation levels can be customized to provide the necessary sealing performance. Expanding the cross-sectional specifications of graphite blocks is conducive to improving their compressive strength; By increasing the aspect ratio, the application cycle time can be extended.

The sealing ability of graphite blocks in cement rotary kilns is related to the performance of artificial graphite. These include heat, corrosion and wear resistance, as well as low coefficient of friction and thermal expansion. As the industrial sector continues to grow, the use of graphite blocks is likely to become more common. Franli graphite factory can provide high-quality graphite for manufacturing graphite blocks, you can contact us if you need it.