5 Key Technical Parameters You Must Know Before Choosing a Flame Resistant Conveyor Belt
2026-01-15 10:14In industries such as coal mining, power generation, metallurgy, and chemical processing, conveyor belt safety is closely linked to production safety and worker protection. Especially in underground coal mines and other flammable environments, a fire can spread quickly if an ordinary belt is used. A flame resistant mining conveyor belt, designed with special materials and structures, helps prevent flame propagation and significantly reduces fire risk, making it the preferred choice in these industries.
Flame Resistance: The Core Safety Indicator.
Flame resistance is the most critical parameter of a flame resistant conveyor belt. It is usually evaluated through burner tests, focusing on flame duration, afterflame behavior, and whether re-ignition occurs.
PVC and PVG solid woven belts are fully impregnated with PVC compounds and then plasticized or vulcanized. This structure provides reliable flame resistance, allowing the mining conveyor belt to operate safely in high-risk environments and helping to stop fire from spreading along the conveying line.
Anti-Static Performance: Reducing Explosion Risks.
In coal mines and similar environments, friction between the belt and equipment can generate static electricity. If static charge is not released properly, it may accumulate and create potential safety hazards.
Hengyi flame resistant conveyor belts are designed with anti-static performance in mind. Through optimized material formulation and belt structure, and verified by testing, they offer stable and reliable anti-static behavior. This helps ensure safe operation of the mining conveyor belt under demanding mining conditions while reducing static-related risks.
Tensile Strength and Tear Resistance: Ensuring Load Capacity and Durability.
Tensile strength determines how much load the belt can carry, while tear resistance affects its ability to withstand impact and abrasion. Solid woven belt construction allows strength to be distributed evenly across the belt body.
Typical Performance Comparison:
| Parameter | PVC Type (Dry Conditions) | PVG Type (Wet Conditions) | Industry Requirement | Hengyi Advantage |
| Longitudinal Tensile Strength | ≥1000–1400 | ≥1200–2000 | ≥1000 (minimum) | Strong solid-woven core for stable conveying |
| Transverse Tensile Strength | ≥300 | ≥400 | ≥300 | Higher transverse strength, better tear resistance |
| Tear Strength | ≥400 | ≥500 | ≥350 | Improved tear resistance, longer service life |
| Max Inclination | <16° | <20° | — | PVG better suited for wet and inclined conveying |
Hengyi PVG belts offer higher transverse strength and excellent tear resistance, with strong joints, making them suitable for long-distance and high-capacity coal conveying systems.
Abrasion and Corrosion Resistance: Adapting to Harsh Conditions.
Mine environments are often humid, dusty, and may contain acidic or alkaline substances. Conveyor belts must therefore resist both wear and corrosion.
PVG belts feature thicker cover layers for improved abrasion resistance. The fully impregnated structure makes the belt body more compact and durable, enhancing corrosion resistance and ensuring stable performance in harsh mining conditions.
Weight and Energy Consumption: Improving Efficiency.
Traditional steel cord belts are heavy and consume more energy. In contrast, solid woven flame resistant belts are lighter and more flexible.
PVG solid woven belts are lighter than steel cord belts of similar strength, helping reduce energy consumption. They can also operate with smaller pulley diameters, lowering equipment costs. In addition, these belts are made from environmentally friendly materials and can be recycled after service life, supporting sustainable operation.
Liaoning Hengyi Rubber Machine Belt Manufacturing Co., Ltd. specializes in the production of flame resistant conveyor belts for mining applications. We provide professional recommendations and customized solutions based on your working conditions. Feel free to contact us for technical support, samples, or quotations.