What Are the Three Types of Conveyor Belts?

This is a practical question for understanding conveyor system basics! The three most common and widely used types of conveyor belts are rubber conveyor belts, modular plastic conveyor belts, and metal conveyor belts, classified by core material and application scenarios.

1. Rubber Conveyor Belts

• The most traditional and versatile type, made of rubber (natural or synthetic) with fabric or steel cord reinforcement layers.
• Suitable for bulk material transportation (e.g., coal, ore, grain) in mining, ports, and power plants.
• Advantages: High tensile strength, good flexibility, and resistance to wear; disadvantages: Susceptible to oil/grease damage and not ideal for high-temperature environments.

2. Modular Plastic Conveyor Belts

• Composed of interlocking plastic modules (usually PP or PE), assembled into a continuous belt.
• Widely used in food processing, packaging, and logistics (e.g., sorting lines, assembly lines).
• Advantages: Easy to clean (hygienic for food industry), corrosion-resistant, and replaceable modules; disadvantages: Lower load-bearing capacity than rubber or metal belts.

3. Metal Conveyor Belts

• Made of metal materials like stainless steel, carbon steel, or mesh wire, formed into chains, slats, or mesh structures.
• Applied in high-temperature, heavy-load, or harsh environments (e.g., foundries, heat treatment, mining for sharp materials).
• Advantages: High temperature resistance, strong load-bearing capacity, and durability; disadvantages: Higher cost, heavier weight, and less flexibility.

Guide for Selecting Conveyor Belts for Stone Crusher Systems

When selecting a conveyor belt for stone crusher systems, the following core factors must be comprehensively considered to ensure the conveyor belt meets the requirements of heavy-load, high-wear scenarios in crushing operations:

1. Strength and Durability

• High Tensile Strength: Stone crushing operations involve heavy loads and high impact forces. Conveyor belts should be made of high-tensile-strength materials such as reinforced rubber or fabric cores. Steel cord conveyor belts are suitable for scenarios requiring extremely high durability, offering excellent tensile performance.
• Abrasion Resistance: Crushed stones are highly abrasive materials. Conveyor belts must have outstanding abrasion resistance to reduce wear and extend service life. Rubber conveyor belts with high-quality abrasion-resistant layers are a common choice.

2. Load Capacity and Conveying Speed

• Load Capacity: The belt's strength (e.g., fabric plies or steel cord specifications) must match the load requirements of the stone crusher system. Light-to-medium duty belts (such as EP 200–EP 400) can be used for small-sized stones (less than 50 mm); heavy-duty belts with reinforced layers (EP 500–EP 800) are required for medium-sized stones (50–150 mm); extra-heavy-duty belts (EP 1000+) are needed for large-sized stones (more than 150 mm).
• Conveying Speed: The conveyor belt speed should be coordinated with the production capacity of the stone crusher system. Faster speeds can improve transportation efficiency, but the belt's strength and the overall stability of the system must be guaranteed.

3. Conveyor Belt Structure

• Carcass Material: Polyester fabric-core conveyor belts are preferred for short-distance belt conveyors. Steel cord-core conveyor belts are more suitable for belt conveyors with large conveying capacity, long distance, high lifting height, and high tension.
• Cover Rubber Thickness: In stone crusher systems, the top cover rubber thickness of conveyor belts is usually 6–15 mm, and the bottom cover rubber thickness is 2–5 mm. A thicker top cover can better resist the impact and abrasion of stones.

4. Environmental Adaptability

• Temperature Resistance: Some stone crushing operations, especially at the crusher outlet, may involve high-temperature conditions. Conveyor belts must have a certain level of temperature resistance to avoid performance degradation or damage under high temperatures.
• Corrosion Resistance: If the stone crushing environment is humid or corrosive (e.g., coastal areas, high-humidity mining areas), conveyor belts made of corrosion-resistant materials or with special surface treatments should be selected to prevent belt degradation.

5. Joint Type

• Splicing Method: Steel cord-core conveyor belts should adopt vulcanized joints; multi-layer fabric-core conveyor belts are preferably spliced with vulcanized joints; fabric solid-core conveyor belts can use adhesive joints or mechanical joints. Vulcanized joints provide higher joint strength and stability, reducing the risk of joint breakage during operation.