How to Choose the Conveyor Belt for Belt Conveyors?

Core Selection Factors

1. Material Characteristics

• Material Type:
  • Granular/bulky materials (e.g., minerals, coal, gravel): Choose a wear-resistant surface, recommended rubber conveyor belts or polyurethane (PU) conveyor belts with textured surfaces to prevent material slipping.
  • Powdery materials (e.g., cement, flour): Select a smooth and non-adhesive surface to avoid material residue, and prioritize closed edges to reduce spillage.
  • Corrosive materials (e.g., chemicals, mineral slurry): Opt for corrosion-resistant materials such as neoprene rubber, fluoro rubber, or polytetrafluoroethylene (PTFE) conveyor belts.
  • High-temperature materials (e.g., coke, slag): Choose high-temperature resistant belts. For operating temperatures >120℃, silicone or aramid materials are recommended; for temperatures <120℃, heat-resistant rubber is suitable.
• Weight and Particle Size:
  • Heavy materials (e.g., ore >50mm): Enhance the belt’s tensile strength and load capacity with multi-layer canvas cores or steel cord cores.
  • Fine-particle materials: Focus on anti-clogging and easy cleaning, avoiding belts with excessive surface gaps.

2. Working Environment Conditions

• Ambient Temperature:
  • Low-temperature environments (<-20℃, e.g., alpine mining areas): Select low-temperature flexible rubber to prevent belt hardening and cracking.
  • High-temperature environments (>40℃, e.g., smelters): Use heat-resistant materials and ensure good heat dissipation performance.
• Humidity and Moisture:
  • High humidity/outdoor environments (e.g., ports, open-pit mines): Choose waterproof and corrosion-resistant materials (e.g., polyester or nylon cores) instead of cotton cores, which absorb moisture and mold easily.
• Contamination and Abrasion:
  • Dust-prone/high-wear environments (e.g., mines, quarries): Opt for a thick top cover (≥6mm) and reinforced edge wear resistance.

3. Conveyor Parameters

• Length and Inclination:
  • Long-distance conveying (>50m): Require high tensile strength; recommend steel cord conveyor belts or high-strength polyester canvas core belts to prevent stretching deformation.
  • Inclined conveying (incline >15°): Choose textured or ribbed surfaces (e.g., chevron, transverse ribs) to enhance material adhesion and prevent slipping.
• Speed and Conveying Capacity:
  • High-speed conveying (>2.5m/s, e.g., port loading/unloading lines): Select impact-resistant covers with flexible cores to reduce damage from material impact.
  • Large conveying capacity (>1000t/h): Increase belt width, and use thick covers and high-strength cores for stable loading.
• Operation Type:
  • Fixed conveyors: Prioritize durable rubber or steel cord belts for long-term continuous operation.
  • Mobile conveyors: Choose lightweight and flexible PU or thin rubber belts for easy movement and storage.

4. Safety and Compliance Requirements

• Explosive environments (e.g., underground coal mines): Select anti-static and flame-retardant belts complying with MT/T 146.2 (mining standards) or ISO 340 (international flame-retardant standards) to prevent static accumulation and explosions.
• Food industry: Use food-grade belts meeting FDA (U.S. Food and Drug Administration) or EU 10/2011 (EU food contact material standards), such as food-grade PU or silicone, which are odorless and free of harmful substance migration.
• Environmental requirements: Prioritize recyclable materials and avoid rubber formulations containing heavy metals (e.g., lead, cadmium) to comply with RoHS (Restriction of Hazardous Substances) standards.

Common Conveyor Belt Types and Applicable Scenarios

Selection Steps and Important Notes

1. Selection Steps

1. Define Basic Requirements: Clarify core parameters such as material type, temperature, humidity, conveying distance, inclination angle, and capacity.
2. Select Belt Material: Determine rubber, PU, steel cord, or other materials based on material characteristics and environment.
3. Specify Structure and Dimensions: Choose core type (canvas/steel cord), cover thickness, belt width, and length.
4. Verify Safety Compliance: Confirm explosion-proof, anti-static, food-grade, or other regulatory requirements.
5. Balance Cost and Durability: Avoid “low-cost, low-quality” belts that require frequent replacement; prioritize long-term value.

2. Important Notes

• Do Not Sacrifice Strength for Cost: In heavy-load scenarios (e.g., mines, ports), never use low-strength core belts, as they are prone to tearing and stretching failure.
• Consider Maintenance: Select easy-to-clean belts with secure joints (e.g., PU belt thermal vulcanization joints) to reduce maintenance costs.
• Adapt to Extreme Environments: Use specialized materials for alpine, high-temperature, or corrosive environments to prevent premature aging.
• Consult Specialized Suppliers: Provide detailed operating parameters for suppliers to recommend suitable models, ensuring accurate selection.

English Marketing Adaptation Recommendations

• Highlight Core Selling Points: E.g., “3x higher wear resistance than industry average” or “Extended service life in harsh mining environments”.
• Compliance Statements: E.g., “Complies with international standards ISO 9001 and ISO 340” or “Certified for underground mining use per MT/T 146.2”.
• Specific Application Scenarios: E.g., “Ideal for iron ore transportation in Peruvian mines” or “PU belt for agricultural product processing in Mexico”.