How to Achieve 20–120 Mesh Fine Rubber Powder with a Rubber Powder Grinding System

In the global wave of the circular economy, waste tires are undergoing a remarkable transformation from “black pollution” to “black […]

In the global wave of the circular economy, waste tires are undergoing a remarkable transformation from “black pollution” to “black gold.” The rubber powder grinding system, a core technology in this transformation, converts tires into high-value rubber powder and pure steel wire. This article will comprehensively unveil this technology, covering its principles, equipment composition, process flow, and application prospects.

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I. System Definition and Core Value

The rubber powder grinding system is an integrated tire recycling equipment that converts entire waste tires into fine rubber powder of 20–120 mesh (125–75 microns) through a complete process of shredding—separation—grinding, while simultaneously achieving efficient separation and recovery of steel wire.

Core Values:

  • Full Resource Recovery: Separates and recovers all components of tires—rubber, steel wire, and fiber.
  • High-Value Products: The produced fine rubber powder can be directly used in high-end products.
  • Environmentally Friendly: Fully enclosed dust collection throughout the process meets strict environmental requirements.

II. System Composition and Equipment Analysis

1.Tire Shredder

    • Function: Coarsely shreds entire tires into uniform rubber blocks.
    • Technical Parameters: Processing capacity 500–10,000 kg/h; motor power 75–250 hp.
    • Core Design: Uses high-strength alloy steel blades to ensure shredding efficiency and durability.

    2.Tire Rasper (Steel Wire Separator)

      • Function: Completely separates steel wire from rubber blocks.
      • Technical Parameters: Rotational speed 500–1,500 rpm; blade material is high-wear-resistant alloy steel.
      • Separation Principle: Achieves separation of rubber and steel wire through impact and friction generated by high-speed rotation.

      3.Tire Granulator

        • Function: Processes clean rubber blocks into uniform granules.
        • Technical Parameters: Uses precision die design to ensure consistent granule size.
        • Innovative Design: Modular structure for easy maintenance; capacity can be flexibly adjusted based on requirements.

        4.Tire Grinder (Rubber Mill)

          • Function: Grinds fine rubber granules into rubber powder of different fineness.
          • Technical Parameters: Finished product fineness can be flexibly adjusted between 20–120 mesh.
          • Core Advantage: Uses a water-cooled temperature control system for normal-temperature operation, extending equipment service life.

          5.Central Dust Collector

            • Function: Dust control throughout the process to ensure compliance with emission standards.
            • Technical Parameters: Dust removal efficiency ≥99.9%; emission concentration ≤10 mg/m³.
            • Design Feature: Intelligent ash cleaning system ensures long-term stable operation.

            6.Vibrating Grading Screen

              • Function: Precisely classifies rubber powder.
              • Technical Parameters: High classification accuracy, enabling precise control between 20–120 mesh.
              • Core Advantage: Modular design allows flexible configuration based on customer needs.

              7.Cyclone Aggremeter

                • Function: Efficiently collects fine rubber powder.
                • Technical Parameters: High collection efficiency reduces fine powder loss.
                • Design Feature: Compact structure for easy integration into production lines.
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                III. Detailed Process Flow

                1.Coarse Shredding Stage

                  Waste tires (passenger car, truck, etc.) first enter the tire shredder, where they are shredded into uniform rubber blocks under strong shear force, preparing them for subsequent fine separation.

                  2.Steel Wire Separation Stage

                    Rubber blocks enter the tire rasper, where rubber and embedded steel wire are completely separated through high-speed rotation and physical friction. Separated steel wire can be directly sold as high-quality scrap steel.

                    3.Fine Granulation Stage

                      Purified rubber blocks are fed into the granulator, where they are extruded and die-cut into uniform rubber granules. This stage is critical for ensuring subsequent grinding results.

                      4.Fine Grinding Stage

                        Uniform rubber granules enter the tire grinder, where they are processed into 20–120 mesh fine rubber powder through precision grinding. The water-cooled temperature control system ensures normal-temperature operation, extending equipment life.

                        5.Classification and Collection Stage

                          Fine rubber powder is precisely classified through a vibrating grading screen to ensure particle size distribution meets requirements. The cyclone aggremeter efficiently collects fine rubber powder, reducing loss.

                          6.Dust Collection and Packaging Stage

                            The central dust collector controls dust throughout the process to ensure a clean workshop environment. Finished rubber powder is screened and packaged according to customer requirements.

                            IV. System Advantages and Features

                            1.High Efficiency and Yield

                              Automated production line design provides strong processing capacity and continuous stable operation, significantly improving recovery efficiency.

                              2.Pure Products

                                Multi-stage separation process (steel wire separation + fine grinding) ensures the production of high-purity, low-impurity, and high-market-value rubber powder.

                                3.Controllable Particle Size

                                  Finished product fineness can be flexibly adjusted between 20–120 mesh to meet different downstream application needs.

                                  4.Fast Return on Investment

                                    Converts waste tires into directly marketable rubber powder and steel wire, creating sustainable economic benefits.

                                    5.Durability

                                      Core components of the equipment are made of high-strength, wear-resistant materials, capable of withstanding the harsh conditions of tire shredding, ensuring a long service life.

                                      6.Environmental Compliance

                                        Fully enclosed dust collection throughout the process; emission indicators exceed national standards, meeting the strictest environmental requirements.

                                        7.Modular Design

                                          Modular design allows flexible configuration based on customer production needs, facilitating installation, replacement, inspection, and maintenance.

                                          V. Raw Materials and Product Applications

                                          Processable Raw Materials:

                                          • Passenger car tires
                                          • Truck tires
                                          • Off-the-road (OTR) tires
                                          • Bicycle tires
                                          • Other rubber products (can be adjusted based on equipment configuration)

                                          Final Products:

                                          • Fine rubber powder (20–120 mesh)
                                          • Clean recycled steel wire

                                          Application Areas:

                                          • Rubber products (seals, gaskets, shoe soles, etc.)
                                          • Road construction (modified asphalt, rubber running tracks)
                                          • Building materials (rubber floor tiles, sound insulation materials)
                                          • Plastic modification (improves plastic toughness and wear resistance)
                                          • Coatings and waterproof materials
                                          • Agriculture (soil conditioners, lawn fillers)
                                          • Steel wire recycling for steelmaking

                                          VI. Market Prospects and Economic Benefits

                                          With the growing global emphasis on environmental protection and resource recycling, the waste tire recycling industry is entering a period of rapid development. The rubber powder grinding system, as a key technology for high-value utilization of tires, continues to see increasing market demand.

                                          Economic Benefit Analysis (based on annual processing of 10,000 tons of waste tires):

                                          • Rubber powder output: ~6,000 tons
                                          • Steel wire output: ~1,200 tons
                                          • Annual sales revenue: ~50 million yuan
                                          • Investment payback period: ~3 years
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                                          VII. Future Development Trends

                                          1.Technological Innovation Directions

                                            • Intelligent control systems to achieve real-time optimization of process parameters
                                            • New grinding technologies to further improve rubber powder purity and fineness control
                                            • Modular design for flexible configuration based on different raw materials and production requirements

                                            2.Industrial Chain Extension

                                              • Extend from simple rubber powder production to high-end recycled products
                                              • Develop high-value-added products based on fine rubber powder
                                              • Build a complete “collection—processing—application” industrial chain

                                              3.Global Layout

                                                With the increase in vehicle ownership in developing countries, demand for waste tire disposal will grow rapidly, shifting market focus to emerging markets.

                                                VIII. Conclusion

                                                The rubber powder grinding system is not only a technological innovation but also key to the resource utilization of waste tires. It transforms “black pollution” into “black gold,” making significant contributions to the circular economy and sustainable development. With continuous technological progress and market maturation, this system will undoubtedly play an increasingly important role in future waste tire recycling.

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                                                • Tire Machine333333, Inc
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                                                • 43333333333, MI
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