coal conveyor details for 960 tph

Detailed Design and Specifications for a 960 TPH Coal Conveyor System

A coal conveyor system designed to handle 960 tons per hour (TPH) requires careful planning to ensure efficiency, durability, and safety. Below are the key components and specifications necessary for such a high-capacity system.

1. Belt Width and Speed
For a throughput of 960 TPH, the conveyor belt width typically ranges between 36 to 48 inches (900 to 1200 mm), depending on coal density and lump size. The belt speed is usually set between 3.5 to 5 meters per second (700 to 1000 feet per minute) to optimize material flow without causing spillage or excessive wear.

2. Belt Material and Strength
Heavy-duty rubber belts with multiple plies or steel cord reinforcement are preferred for high-capacity coal handling. The belt tensile strength should exceed 800 PIW (Pounds per Inch of Width) to withstand the load and operational stresses. Abrasion-resistant covers are essential to prolong belt life in harsh coal environments.

3. Drive System
A robust drive system is critical for maintaining consistent speed and torque. Multiple drive pulleys with high-efficiency motors (typically 150-250 HP each) are used, often equipped with variable frequency drives (VFDs) for smooth acceleration and deceleration. Gear reducers with a suitable ratio ensure optimal power transmission.

4. Idlers and Support Structure
Impact idlers with rubber discs are installed at loading points to absorb shock, while troughing idlers with a 35° or 45° angle support the loaded belt along the length. The spacing of idlers varies—closer spacing (0.9 to 1.2 meters) under loaded sections prevents sagging, while return idlers are spaced farther apart (2-3 meters). The support structure is typically constructed from galvanized steel for corrosion resistance in outdoor installations.

5. Loading and Discharge Points
Properly designed chutes minimize dust generation and belt wear at loading zones. Skirtboards lined with UHMW polyethylene reduce friction, while dust suppression systems maintain air quality. Discharge points may include trippers or plows for controlled coal distribution into storage or processing units.

6. Safety Features
Emergency pull cords, belt misalignment switches, and zero-speed sensors ensure safe operation across long distances. Fire-resistant belts and spark detection systems mitigate combustion risks in coal handling applications.