Flame Resistant Conveyor Belts for Underground Coal Mining

Flame Resistant Conveyor Belt

JINFLEX flame resistant conveyor belts are mainly used for internal transportation in high-safety-demand scenarios, including underground coal mines, tunnels, power stations, heating stations, garbage incineration plants, cement plants, foundries, and steel mills—ideal for conveying coal, coke, sintered ore, and flammable bulk materials.

Our flame resistant conveyor belts fully comply with China’s coal mine safety standards (MT668-2019, HG2539 for general flame resistant type) and international standards, including Germany (DIN22131), the United States (RMA), Japan (JIS6369), Australia (AS1333), and South Africa (SABS). We have obtained the Coal Safety (MA) Mark Certification for mine use.

Flame Resistant Conveyor Belt

Product description

The flame resistant conveyor belt adopts a "flame resistant cover rubber + high-strength carcass + anti-static core rubber" structure, designed for explosion-proof safety

Flame Resistant Cover Rubber: Special rubber compound with flame retardant and anti-static additives, meeting MT668-2019 requirements—effectively inhibiting combustion and reducing smoke release.

Carcass: Optional high-strength zinc-plated steel cord (for heavy load) or multi-ply fabric (EP/NN/CC, for medium load), with low elongation and strong tensile resistance.

Core Rubber: Anti-static core rubber with good adhesion, ensuring tight bonding between carcass layers and preventing separation; surface resistance ≤3×10⁸Ω to avoid static accumulation.

Edge Reinforcement: Reinforced edge rubber resists wear and cracking, adapting to narrow tunnel conveyor layouts.

Features and Benefits

■ Excellent Flame Retardancy & Anti-Static

Meets MT668-2019: Alcohol combustion time (average ≤3s, single ≤10s), propane combustion damage length <1250mm, and surface resistance ≤3×10⁸Ω—fully avoiding static-induced explosion risks.

■ High Wear Resistance & Long Life

Special flame resistant cover rubber has Shore abrasion ≤90mm³, with service life 2x longer than ordinary mine belts; steel cord carcass (optional) resists impact from falling coal/ore.

■ Strong Tensile Performance

Steel cord type has tensile strength up to 7500N/mm, fabric type up to 400N/mm, suitable for long-distance (≥5km) underground coal transport.

■ Adaptability to Humid Mines

Cover rubber and core rubber have water absorption ≤1.5%, no performance degradation in wet underground environments (humidity ≥80%).

■ Reliable Splicing

Hot vulcanized splice is recommended; splice strength retains ≥90% of the original belt, ensuring stable operation without breakage in long-term use.

Belt Selection

Carcass Type: Zinc-plated steel cord (heavy load) / Multi-ply fabric (EP/NN/CC, medium load)

Tensile Strength: Fabric type (56-400N/mm) / Steel cord type (630-7500N/mm)

Belt Width: 400mm - 2600mm

Cover Thickness: 3-12mm (top/bottom optional)

Safety Certification: Coal Safety (MA) Mark, EU CE Certification

Why Choose Us

Support small-batch orders with no MOQ：

backed by 20M meters annual capacity, we deliver small batches on time.

Offer full customization:

Customize carcass type, belt width, and cover rubber thickness according to your mine’s tunnel size and conveying load.

Deliver high cost-effectiveness:

50+ years of mine belt manufacturing experience, MA/ISO/CE certification, and optimized processes ensure explosion-proof safety at an economical price.

Reference Specification:

Carcass Type	Tensile Strength (N/mm)	Belt Width (mm)	Cover Thickness (mm)	Alcohol Combustion	Propane Combustion	Surface Resistance (Ω)
			Top	Bottom
EP/NN 100-400	100-400	400-2200	3-8	2-6	≤3s (avg), ≤10s (single)	Damage length <1250mm
CC56/70	56-70	400-2200	3-6	2-4	≤3s (avg), ≤10s (single)	Damage length <1250mm
Steel Cord (ST630-7500)	630-7500	400-2600	4-12	4-8	≤3s (avg), ≤10s (single)	Damage length <1250mm

This table is for reference only. Please consult JINFLEX business personnel for details