General rubber conveyor belts can handle temperatures below 80°C and transport materials such as coal, ores, sand, gravel, and grains. However, some industries need special belts to handle materials processed at extremely high temperatures. These materials include clinker, cement products, dry clay, coke, etc.
Temperatures in these sectors vary from 200 to 500 degrees Celsius and occasionally surpass 800 degrees Celsius. And, natural rubber cannot handle such high temperatures and extreme stress. However, you can use Heat Resistant Conveyor Belts to transport high-temperature materials.
What is a Heat Resistant Conveyor Belt?
The heat-resistant conveyor belt consists of a high-temperature burning layer, a transition layer, an organic insulation layer, and a strong heat-resistant layer. The rubber surface is covered with EPDM (Ethylene Propylene Diene Monomer) or SBR (Polymerised Styrene-Butadiene Rubber). The strong layer might be made of polyester canvas or canvas with high strength and permeability. These will be glued together via high-temperature vulcanization.
Heat Resistant Conveyor Belts are classified into three grades: T1, T2, and T3, with test temperatures of 120, 150, and 180 degrees Celsius, respectively.
The rubber compound serves as a lifesaving layer for the carcass. Also, the density of the top and bottom rubber covers helps to extend the life of the heat-resistant conveyor belt.
Heat-resistant Rubber Conveyor Belts are extremely resistant to hot cement, steel, and sand materials. The cover of these transport belts is made of a special rubber combination that has great adhesive resistance, cut strength, elongation at break, and excellent heat protection.
Heat-resistant conveyor belts designed per DIN 22102 may move material at temperatures as high as 250 °C while maintaining a constant temperature of 200 °C.
Applications of Heat Resistant Conveyor Belts:
These belts are used in cement plants, steel and iron factories, metallurgy, and the coking industry. They transport coke, iron and steel castings, and cement clinker.
The product uses cotton canvas or EP canvas as the skeletal material. Cover and cushion rubber are made of styrene-butadiene or chlorobutadiene, which is heat-resistant and ideal for transporting products at temperatures below 150℃.
How Do Heat Resistant Conveyor Belts Work?
The basic working principle of these belts is the same as every conveyor belt. A continuous loop driven by a motor carries goods along its surface. However, heat-resistant belts demand additional precautions.
- Each belt is rated for a maximum temperature, which ranges between 100°C and 500°C depending on the materials and structure. The temperature exceeding 500°C can harm the belt and jeopardize safety.
- In high temperatures, additional cooling systems such as air knives or water sprays may be used to remove heat and preserve the belt.
- Heat-resistant belts need regular checks and routine maintenance. This increases the lifespan of belts and prevent unexpected failure.
Conclusion
You can follow the above tips to prevent such issues. Continental Belting Pvt Ltd manufactures specialized belt conveyors and conveyor systems. We also offer replacement parts, repairs, and other services to our customers So, if you’re looking for some trusted Heat Resistant Conveyor Belts Manufacturers in India, contact us today.
