In recent years, with the surge in vehicle ownership, the global production of scrap tires has continued to climb. According to statistics, over one billion scrap tires are generated annually. If improperly handled, they not only occupy land but can also cause fires and environmental pollution. Traditional landfill and incineration methods no longer meet environmental standards, making mechanical shredding and recycling a more sustainable option. Double-shaft shredders, with their high efficiency and energy-saving features, have become a core piece of equipment for scrap rubber tire processing.
How do double-shaft shredders adapt to the characteristics of rubber/tires?
Rubber tires are highly elastic, tear-resistant, and wear-resistant. Conventional shredders are prone to jamming or rapid blade wear. Double-shaft shredders utilize a low-speed, high-torque design. Through counter-rotating, linked blade shafts, they squeeze, shear, and tear tires into 50-100mm rubber blocks. Their special alloy blades and adjustable gap structure effectively address entanglement of steel cord or fiber layers, ensuring stable operation.
Shredding Process and Equipment Configuration
Pretreatment: Removes tire bead wire to reduce metal wear on the blades.
Primary Shredding: A twin-shaft shredder breaks down the tire into rubber chunks and separates some steel wire.
Magnetic Separation and Sorting: A magnetic separator recovers steel wire, improving rubber purity.
Final Crushing and Screening (Optional): Further processing into smaller particles (10-30mm) for downstream applications.
A typical configuration includes a twin-shaft shredder unit + hydraulic pusher system + intelligent control panel + dust and noise reduction device, enabling automated and environmentally friendly production.
Wide Applications of Shredded Rubber
Recycled Rubber Manufacturing: Used in the production of runways, floor mats, and shock absorbers.
Pyrolysis Refining: Extracts carbon black, steel wire, and fuel oil, achieving full resource utilization.
Fuel Substitution: High-calorific rubber chunks can be used as an alternative fuel in cement plants or power plants.
Modified Asphalt: Rubber powder is used in road paving, improving road durability.
Twin-shaft shredders not only solve the problem of waste tire disposal but also promote the development of a circular economy. With technological upgrades, its processing efficiency and resource conversion rate will be further improved, injecting new impetus into the environmental protection industry.