Dust-Free & Explosion-Proof: Conveyor Belts That Meet Mining Safety Standards
2026-01-16 21:56In underground coal mines, the air is often filled with coal dust and sometimes explosive methane gas. If a conveyor belt creates sparks through friction, or if too much dust becomes airborne, it can easily trigger fires or even explosions. These accidents put workers’ lives at risk and can cause serious financial losses.
So a common question is: Is there a conveyor belt that can reduce dust, prevent sparks, and lower fire risks?
The answer is yes. Conveyor belts designed specifically for mining—especially flame retardant conveyor belts—are built to reduce these dangers at the source. Hengyi’s dust-free, explosion-proof belts have passed strict testing and are already in use at many coal mines, helping operators run safer and more stable operations.
How does a dust-free, explosion-proof conveyor belt work?
This type of belt is designed with three key layers of protection.
Strong flame resistance: Made from special compounds, the belt can self-extinguish quickly when exposed to open flame. It doesn’t allow fire to spread and produces much less harmful smoke. This is a core feature of any reliable flame retardant conveyor belt used underground.
Anti-static performance: The belt surface releases static electricity generated by friction during operation. This helps prevent sparks that could ignite methane gas or coal dust.
Dust control: The belt structure is compact, so coal dust is less likely to escape during transport. Some models also use sidewalls to create a more enclosed space, further reducing dust leakage and keeping the air cleaner.
Typical application areas:
Main haulage roadways: Used for long-distance coal transport, where explosion protection is the top priority.
Coal mining faces: These areas are often wet and harsh, so durability and stability are critical.
Coal bunkers or coal washing plants: Dust levels are high, and sidewall designs help keep dust under control.
Inclined or steep conveying lines: Designed to prevent material rollback and reduce dust generation during lifting. In these conditions, a properly selected flame retardant conveyor belt adds another layer of safety.
How to choose a reliable mining conveyor belt:
When selecting a belt, keep the following points in mind.
Make sure it has recognized safety certifications for mining use.
Choose the right type for site conditions: PVC for dry environments, PVG for wet or damp conditions.
Avoid cheap, low-quality belts that can create hidden safety risks.
Hengyi conveyor belts are fully tested for consistent performance and are built to help you protect the safety line underground.
Technical comparison (reference):
| Parameter | PVC Type | PVG Type | Sidewall Type | Industry Requirement / Notes |
| Longitudinal tensile strength (N/mm) | 800–1600 | 1000–2000 | Same as base belt, depends on plies | ≥650 (minimum) |
| Cover thickness (top/bottom, mm) | Top 4–6 / Bottom 1.5–3 | Top 4–8 / Bottom 2–4 | Thicker top cover for wear resistance | Adjusted by strength grade |
| Flame retardancy | Alcohol burner: flame ≤3s, after-flame ≤10s | Same | Same as base belt | MT 914 compliant |
| Anti-static (surface resistance, Ω) | ≤3×10⁸ | ≤3×10⁸ | Same as base belt | ≤3×10⁸ (mandatory for coal mines) |
| Max conveying angle | ≤16° | ≤20° | 30°–90° (depends on sidewall height) | Standard belts usually ≤20° |
| Sidewall height (mm) | None | None | 60–400 (customizable) | – |
| Material size (mm) | ≤150 | ≤200 | ≤300 (enclosed design supports larger sizes) | Depends on belt width & cleats |
| Belt width range (mm) | 500–1400 | 500–1600 | 500–1600 | Standard sizes, customizable |
| Service life (reference) | 2–3× longer than standard belts | 2–4× longer than standard belts | Tear-resistant, even longer life | Depends on maintenance & conditions |
A dust-free, explosion-proof conveyor belt is a key part of safe coal mine operations. Choosing the right belt helps protect workers, reduce losses, and keep production running smoothly.
If you’re selecting a conveyor belt for mining use, feel free to contact us for more details, certifications, or product samples—we’re always happy to help.