Purpose
Mainly used in industries such as metallurgy and construction to transport high-temperature materials such as sintered ore, coke, and cement clinker. Material temperature should not exceed 800 °C, and surface temperature should not exceed 220 °C.
🏭
Metallurgy & Construction
🔥
Up to 800 °C Material Temp
⚙️
EPDM Cover Layer
⏳
2–4× Longer Lifespan
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.
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.
T1 — Type I
Test temperature: not exceeding 100 °C
Max short-term operating: 150 °C
T2 — Type II
Test temperature: not exceeding 125 °C
Max short-term operating: 170 °C
T3 — Type III
Test temperature: not exceeding 150 °C
Max short-term operating: 200 °C
T4 — Type IV
Test temperature: not exceeding 175 °C
Max short-term operating: 250 °C
Physical Properties
| Property |
Value |
| Difference between Strength Aging and Pre-Aging (IRHD) |
23 |
| Maximum value after aging (IRHD) |
88 |
| Decreased rate of change in tensile strength performance |
40% |
| Lowest value after aging |
5 MPa |
| Change rate of tensile strength performance |
60% |
| Minimum value after aging |
150% |
🛡️ High-Temperature Resistant Steel Mesh Conveyor Belt: Made of steel wires woven vertically and horizontally. The surface of the steel mesh is galvanized or copper plated, and the lower surface is covered with a rubber layer. During transportation of high-temperature materials, the overall surface does not peel off — offering more reliable performance 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.
T1 — Type I
Test temperature: not exceeding 100 °C
Max short-term operating: 150 °C
T2 — Type II
Test temperature: not exceeding 125 °C
Max short-term operating: 170 °C
T3 — Type III
Test temperature: not exceeding 150 °C
Max short-term operating: 200 °C
T4 — Type IV
Test temperature: not exceeding 175 °C
Max short-term operating: 400 °C
T5 — Type V
Test temperature: not exceeding 240 °C
Max short-term operating: 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. Rubber materials such as styrene butadiene rubber, butyl rubber, and ethylene propylene rubber are used, with polyester cotton and polyester canvas as the core.
Heat resistant conveyor belts are divided into four levels according to different test temperatures:
T1
Test temperature: not exceeding 100 °C
T2
Test temperature: not exceeding 125 °C
T3
Test temperature: not exceeding 150 °C
T4
Test temperature: not exceeding 175 °C
The strength and width specifications of heat-resistant conveyor belts are the same as those of ordinary conveyor belts.
📌 Tape Marking Example:
200 1200 EP 5 1000 8+3 T2
This indicates: length 200m, width 1200mm, core of EP canvas (5 layers), strength specification 1000 N/mm, upper/lower cover layer thicknesses of 8mm and 3mm, capable of withstanding a test temperature of no more than 125 °C (T2). This product complies with 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, and thermal conductivity agents are added to the cover layer rubber to improve the high-temperature and anti-ablation properties of the tape.
Frequently Asked Questions
Q
What is the maximum material temperature a heat-resistant conveyor belt can handle?
Heat-resistant conveyor belts can handle material temperatures up to 800 °C, while the surface temperature should not exceed 220 °C. For specific operating conditions, the appropriate belt type (T1–T5) should be selected based on the required temperature rating.
Q
What industries are heat-resistant conveyor belts used in?
They are widely used in metallurgy, building materials, casting, coking, and chemical engineering industries for transporting high-temperature materials such as sintered ore, coke, cement clinker, slag, and hot castings.
Q
What are the different types of heat-resistant conveyor belts and their temperature ratings?
There are up to five types: T1 (up to 100 °C test / 150 °C short-term), T2 (up to 125 °C / 170 °C), T3 (up to 150 °C / 200 °C), T4 (up to 175 °C / 250–400 °C depending on standard), and T5 (up to 240 °C / 600 °C short-term).
Q
What materials are used in the cover layer of heat-resistant conveyor belts?
The cover layer is typically made from EPDM rubber, or rubber compounds such as styrene butadiene rubber, butyl rubber, or ethylene propylene rubber. Additives such as flame retardant insulation agents, anti-ablation agents, and thermal conductivity agents may also be incorporated to improve high-temperature resistance.
Q
What standards do heat-resistant conveyor belts comply with?
These products comply with HG2297-92 and GB/T20021-2005 national standards, as well as the international standard draft ISO/FDIS14890-1999 for general-purpose fabric core conveyor belts with rubber or plastic covering.
Q
How does a steel mesh heat-resistant conveyor belt differ from a fabric-core belt?
A steel mesh heat-resistant conveyor belt is constructed from vertically and horizontally woven steel wires with a galvanized or copper-plated surface and a rubber lower layer. Unlike fabric-core layered belts, the steel mesh belt's surface does not peel off during high-temperature material transport, offering superior reliability and performance at elevated temperatures.
Boao Rubber
