Mainly used in industries such as metallurgy and construction to transport high-temperature materials such as sintered ore, coke, and cement clinker. The material temperature should not exceed 800°C, and the surface temperature should not exceed 220°C.
Features: The cover layer is made of EPDM rubber, and the skeleton material is made of domestically used high-temperature resistant canvas. The unique formula design solves the key problems of high saturation, poor adhesion, and low interlayer adhesion of EPDM rubber. It has the characteristics of light weight, long lifespan (about 2-4 times), and good heat resistance.
Implementing the standard of "General purpose fabric core conveyor belts with rubber or plastic covering", this standard adopts the international standard draft ISO/FDIS14890-1999 standard.
A heat-resistant conveyor belt is made of multiple layers of rubber cotton canvas (polyester cotton cloth) or polyester canvas covered with high-temperature resistant or heat-resistant rubber, bonded together by high-temperature vulcanization, suitable for transporting hot coke, cement, slag, and hot castings below 175°C.
The specifications are the same as ordinary conveyor belts.
The product complies with HG2297-92 standard.
Heat resistant conveyor belts can be divided into four types:
Type I (T1)Can withstand test temperatures not exceeding 100°C, with a maximum short-term operating temperature of 150°C.
Type II (T2)Can withstand a test temperature not exceeding 125°C, with a maximum short-term operating temperature of 170°C.
Type III (T3)Can withstand test temperatures not exceeding 150°C, with a maximum short-term operating temperature of 200°C.
Type IV (T4)Can withstand a test temperature not exceeding 175°C, with a maximum short-term operating temperature of 250°C.
Physical properties
Difference between Strength Aging and Pre Aging (IRHD)23
Maximum value after aging (IRHD)88
Decreased rate of change in tensile strength performance40%
The lowest value after aging5MPa
Change rate of tensile strength performance60%
Minimum value after aging150%
High temperature resistant steel mesh conveyor belt is made of steel wires woven vertically and horizontally. The surface of the steel mesh is galvanized or copper plated, and the lower surface of the steel mesh is covered with a rubber layer. During the transportation of high-temperature materials, the overall surface does not peel off, and its performance is more reliable than layered heat-resistant conveyor belts.
A heat-resistant conveyor belt is made of multiple layers of rubber cotton canvas (polyester cotton cloth) covered with high-temperature resistant or heat-resistant rubber, bonded together by high-temperature vulcanization, suitable for transporting hot coke, cement, slag, and hot castings below 240°C.
The specifications are the same as ordinary conveyor belts.
The product complies with HG2297-92 and GB/T20021-2005 standards.
Heat resistant conveyor belts can be divided into five types:
Type I (T1)Can withstand test temperatures not exceeding 100°C, with a maximum short-term operating temperature of 150°C.
Type II (T2)Can withstand a test temperature not exceeding 125°C, with a maximum short-term operating temperature of 170°C.
Type III (T3)Can withstand test temperatures not exceeding 150°C, with a maximum short-term operating temperature of 200°C.
Type IV (T4)Can withstand a test temperature not exceeding 175°C, with a maximum short-term operating temperature of 400°C.
Type V (T5)Can withstand a test temperature not exceeding 240°C, with a maximum short-term operating temperature of 600°C.
Key Features
This type of conveyor belt is mainly used in industries such as metallurgy, building materials, casting, coking, and chemical engineering to transport high-temperature solid materials such as sintered ore, coke, cement, and fertilizers, with specified heat resistance performance. The heat resistance and service life of heat-resistant conveyor belts mainly depend on the heat resistance of the covering layer and the belt core. Generally, rubber with good heat resistance such as styrene butadiene rubber, butyl rubber, ethylene propylene rubber, etc. are used as the main rubber material, and polyester cotton and polyester canvas with heat resistance and heat shrinkage are used as the core.
Heat resistant conveyor belts are divided into four levels according to different test temperatures:
T1: Test temperature that can withstand heat not exceeding 100°C.
T2: Test temperature that can withstand heat not exceeding 125°C.
T3: Can withstand a test temperature not exceeding 150°C.
T4: Can withstand a test temperature of no more than 175°C.
Example of tape marking: 200 1200 EP 5 1000 8+3 T2 indicates that the tape has a length of 200m, a width of 1200mm, a core of EP canvas with five layers, a strength specification of 1000N/mm, and upper and lower cover layer thicknesses of 8mm and 3mm respectively. The cover layer can withstand a test temperature of no more than 125°C. This type of product complies with the national standard GB/T 20021-2005 "Canvas Heat resistant Conveyor Belt".
In order to meet higher operating temperatures, some manufacturers have also developed heat-resistant conveyor belts that can withstand higher temperature levels and high-temperature conveyor belts that can withstand burning. Generally, flame retardant insulation agents, anti ablation agents, thermal conductivity agents, etc. are added to the cover layer rubber to improve the high-temperature and anti ablation properties of the tape.
Frequently Asked Questions
What are the primary applications of heat-resistant conveyor belts?
They are mainly used in metallurgy, construction, casting, coking, and chemical industries to transport high-temperature materials like sintered ore, coke, cement, slag, and fertilizers.
What rubber materials and canvas cores are used in these belts?
Generally, the cover layer is constructed from heat-resistant rubbers such as EPDM (ethylene propylene rubber), styrene butadiene rubber, or butyl rubber. The core is made of polyester cotton, polyester canvas, or high-temperature resistant canvas.
How are heat-resistant conveyor belts categorized by temperature limits?
They are divided into specific types, ranging from Type I (T1) withstanding test temperatures up to 100°C, to Type V (T5) which handles test temperatures up to 240°C and short-term operating temperatures up to 600°C.
What are the differences between layered and steel mesh heat-resistant belts?
Unlike standard layered belts, high-temperature resistant steel mesh conveyor belts utilize vertically and horizontally woven steel wires that are galvanized or copper-plated. This construction prevents overall surface peeling during transport, offering higher reliability.
What compliance standards do these heat-resistant belts meet?
These products comply with the standards HG2297-92, GB/T 20021-2005 ("Canvas Heat resistant Conveyor Belt"), and adopt the international standard draft ISO/FDIS14890-1999.
How is the heat resistance and anti-ablation performance further improved?
To achieve higher operating temperatures and resist burning, agents such as flame retardants, anti-ablation insulation agents, and thermal conductivity agents are added directly to the cover layer rubber.
Boao Rubber
