High Temperature Flame Resistant Conveyor Belt For Cement Mining Coal Industries
The heat-resistant conveyor belt is a specialized type of belting engineered to transport hot materials continuously in demanding industrial environments. Unlike standard belts, which can degrade, crack, or lose strength when exposed to high temperatures, these belts are constructed to maintain their structural integrity, operational safety, and longevity.
1. Specialized Materials:
Carcass (Reinforcement): Typically made from high-tensile strength, heat-stabilized synthetic fabrics like EP (Polyester-Nylon) or, for extreme temperatures, steel cords. These materials are treated to resist thermal degradation.
Top & Bottom Cover: The most critical component. Made from compounded rubber formulations—often EPDM (Ethylene Propylene Diene Monomer) or SBR (Styrene-Butadiene Rubber) with specific additives. These compounds are designed to resist cracking, hardening, and abrasion caused by heat.
Insulating Layer: Many belts include a heat-insulating fabric or rubber layer between the carcass and the top cover to shield the tension-bearing carcass from the direct impact of heat.
2. Temperature Resistance:
Belts are graded for specific temperature ranges. Common classifications include:
T1 (up to 100°C / 212°F): For moderately hot materials.
T2 (up to 125°C / 257°F): A common standard for many applications.
T3 (up to 150°C / 302°F): For high-temperature duties.
It's crucial to distinguish between material temperature and ambient air temperature when selecting a belt.
| Grade | Tensile Strength (Mpa) | Elongation at Break (%) | Abrasion (mm³) |
|---|---|---|---|
| H | 24.0 | 450 | 120 |
| D | 18.0 | 400 | 100 |
| L | 15.0 | 350 | 200 |
| Standard | Tensile Strength (Mpa) | Elongation at Break (%) | Abrasion (mm³) | Cover to Ply (≤1.5mm) N/mm | Cover to Ply (>1.5mm) N/mm | Ply to Ply N/mm |
|---|---|---|---|---|---|---|
| DIN 22102-Z | 15 | 350 | 250 | 3.5 | 4.5 | 5 |
| DIN 22102-W | 18 | 400 | 90 | 3.5 | 4.5 | 5 |
| DIN 22102-Y | 20 | 400 | 150 | 3.5 | 4.5 | 5 |
| DIN 22102-X | 25 | 450 | 120 | 3.5 | 4.5 | 5 |
- Mines and quarries: Medium- to short-distance conveyance of ore, gravel, and sand
- Construction: Conveying concrete, sandstone, and cement
- Food processing and agriculture: Conveying grain, feed, and fertilizer
- Light industry and manufacturing: Transporting packages, parts, lumber, and paper
- Airports and logistics centers: Baggage handling systems
- Power and chemical industries: Less demanding working conditions
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