Underground Conveyor Belt

Overview

Underground coal mine conveyors face very real safety risks. Built up flammable gas, static electricity, and friction heat between belt and rollers are common ignition sources that can lead to fire or explosion.

This steel cord flame resistant conveyor belt is developed for such high risk underground mine conditions. Every unit is manufactured and tested against MT/T 668 2019, the Chinese industry standard for underground mine steel cord fire resistant conveyor belts.

Compared with fabric reinforced belts, embedded high tensile steel cords keep operational stretch low even under heavy continuous loads. It works reliably for long haul, high tonnage transport of lumpy, granular and powdered mine materials. Mine site teams often pick this belt when anti static and fire retardant performance are mandatory to meet safety codes and keep production running.

Applications

• Bulk material transportation within flame retardant, anti explosion underground coal mine zones.
• Long distance, high tonnage conveying of coal, ore and mixed bulk minerals in underground workings.
• Conveying lump, granular and powder form materials within gassy underground mine atmospheres.
• Mine sites requiring certified anti static, fire safe conveyor belts to satisfy local safety compliance rules.

Key Features

Flame retardant & anti static performance

Static build up and frictional heat pose major ignition hazards in gassy underground mines. This belt passes full sets of underground safety tests, lowering fire triggering risks and helping your site stay compliant with local mine safety regulations.

High tensile strength with low working elongation

Internal steel cords spread tension evenly across the belt width. Minimal stretch occurs under heavy load operation. This eases strain on take up systems and cuts down frequent readjustment work for your on site maintenance crew.

Superior abrasion and impact resistance

Underground operating conditions are harsh: falling rock fragments and heavy coal lumps constantly strike the belt surface. Our tough rubber cover absorbs these impacts and resists abrasive wear. This helps extend service life and reduces your frequency of belt replacements.

Excellent trough forming performance Fits standard underground conveyor idler sets out of the box. The belt holds bulk materials firmly and helps cut material spillage along the conveyor route.

Stable bond rubber to steel cord adhesion Rubber and internal steel cords maintain strong bonding. It fights delamination when exposed to repeated dynamic stress during round the clock underground operation.

Cover Rubber Performance Specifications

All performance values comply with MT/T 668 2019 requirements for cover rubber compound:

• Tensile strength: ≥ 15 MPa
• Elongation at break: ≥ 350 %
• Abrasion loss: ≤ 200 mm³
• Ageing test (70 °C, 168 h): Tensile strength change within ±25 %; Elongation at break change within ±25 %

Mandatory Safety Performance (MT/T 668 2019 Safety Test Index)

Available Custom Options

• Strength grades (ST series): ST630 up to ST5400 N/mm
• Standard belt width: 800 mm to 3200 mm; non standard widths can be discussed upon request
• Cover rubber thickness adjustable based on material impact intensity and abrasion levels at your site
• Export ready waterproof roll packaging for ocean shipment and long term warehouse storage

Why Choose Our Underground Steel Cord Conveyor Belt

Every production batch goes through complete in lab safety checks before shipment. Anti static test, drum friction test, burner test and propane roadway burning test are all non negotiable; we never skip these safety related inspections for underground mining belts.

Unplanned downtime underground brings huge financial losses. Our fire resistant steel cord conveyor belt combines proven mechanical durability with statutory mine safety requirements. It helps site operators pass local safety audits and steer clear of safety incidents caused by non compliant conveyor components.

If you need support picking the right strength grade, belt width or cover rubber thickness, send over your conveyor length, hourly throughput, material characteristics and existing pulley dimensions. Our engineers with mining project experience can figure out suitable specs for your layout.

FAQ

Q1: What standard does this underground conveyor belt comply with?

A: It is manufactured and tested according to MT/T 668 2019, the Chinese industry standard for steel cord fire resistant conveyor belts intended for underground coal mines.

Q2: Can this belt be used for applications other than coal mines?

A: It is primarily developed for underground coal mine explosion hazard zones. It may suit other underground bulk material transport projects requiring anti static and fire retardant properties, subject to local site safety assessment and approval.

Q3: What details do I need to provide for a formal quotation?

A: Please share required belt strength grade (ST rating), belt width, top / bottom cover rubber thickness, total required belt length, plus any special packaging or document related requirements.

Q4: Can you provide third party test reports and certification documents?

A: Batch specific factory test reports are available. Third party inspection documents can be arranged upon your project request.

Q5: What is your lead time and MOQ for export orders?

A: Production lead time depends on belt specs and total order volume. MOQ differs between standard and non standard sizes. Get in touch with our sales team for project specific timelines.

Q6: Do you supply MSDS documentation for rubber conveyor belts?

A: MSDS files can be prepared for export shipments on request.

Q7: What is the minimum pulley diameter for ST series steel cord belts?

A: Minimum pulley diameter ties directly to your selected ST strength grade. Our engineers will advise on matching pulley sizes for your chosen belt.