Globally, over 1.5 billion waste tires (exceeding 50 million metric tons) are generated annually, primarily from tire replacements of private vehicles, trucks, buses, & construction machinery. With the continuous growth of the global vehicle fleet, waste tire volumes are rising. Effective management of this solid waste poses a global environmental challenge. However, their inherent resource value—rubber, steel wires, and high calorific value—offers significant potential for resource recovery.
Resource Utilization Methods for Waste Tires
- Pyrolysis
- Process: Thermal decomposition at high temperatures (400–800°C) in an oxygen-free or inert gas environment.
- Outputs: ◦ Fuel oil (40%) ◦ Carbon black (30%) ◦ Steel wires (20%) ◦ Combustible gas (10%)
- Applications: Industrial fuel, rubber products, and metallurgical raw materials.
- Requirements: Relies on fully enclosed, environmentally compliant industrial systems to strictly control emissions of hazardous substances (e.g., dioxins) and ensure environmental safety.
- Tire Retreading
- Process: Professional assessment and retreading of truck/engineering tires with intact carcasses.
- Output: Retreaded tires directly re-enter use, significantly reducing raw material and energy consumption compared to new tire production.
- Mechanical Processing (Crushing & Separation)
- Core Equipment: Double Shaft shredder
- Process Flow: Waste tires → Coarse shredding → Fine grinding → Multi-stage separation(steel wire removal, fiber extraction, magnetic sorting)
- Products and Applications:
◦Tire-Derived Aggregate/Fuel (TDA/TDF): High-calorific solid fuel (~80–90% of coal’s energy value), used for co-processing in cement kilns, power plants, paper mills, and steel furnaces for clean energy substitution.
◦Crumb Rubber / Rubber Granules: Raw material for rubber mats, sports tracks, artificial turf, rubber-modified asphalt, mudguards, shoe soles, and other rubber-plastic products.
Intelligent Resource Recovery System Solutions
Streamline Eco Tech’s integrated system includes Double Shaft shredder, crusher, steel-wire separator, magnetic sorter, and fiber-sorting unit, with a central smart control system:
- Automation: Enables continuous operation, enhancing efficiency while reducing labor costs and operational risks.
- Precision Control: Adjusts particle size distribution to meet specific requirements (e.g., TDF fuel, asphalt-modified rubber powder, fine reclaimed rubber powder).
- High-Efficiency Separation: Maximizes recovery rates and purity of rubber, steel, and fiber components.
- Customization: Adaptable configurations for varying scales and output targets.
Core Role of Double Shaft Shredders
As the primary processing stage:
- Robust Coarse Shredding: Equipped with alloy blades and counter-rotating shafts for uniform output.
- High Adaptability: Processes steel-belted tires directly and withstands overload impacts.
- Efficient Pre-treatment: Increases material surface area, significantly improving downstream wire separation and grinding efficiency.
- Smart Controls: Hydraulic system with overload protection, real-time speed/torque adjustment.