Integrated Shredder and Granulator Units

Integrated Shredder and Granulator Units (Compact Recycling Systems)

In recycling and industrial waste management, introducing large-volume or high-hardness materials directly into secondary crushing (granulation) processes accelerates blade wear and increases energy consumption. In traditional facilities, this problem is overcome by using a shredder, followed by a conveyor belt system, and finally a granulator.

Integrated Shredder and Granulator Units are advanced engineering solutions that combine coarse shredding and fine crushing (granulation) processes under a single compact body and automation system. These systems provide maximum space savings and operational synchronization in your facility.

How Does the Integrated System Work?

Integrated units utilize gravitational acceleration and intelligent PLC automation to ensure both machines operate in perfect harmony. The process is continuous and independent of human intervention, occurring in three main stages:

1. Stage: Coarse Shredding (Shredder Section) Located at the top of the system, this is usually a single-shaft (or twin-shaft depending on the application) shredder unit.

• Large-volume waste (e.g., plastic blocks, IBC tanks, thick-walled pipes) is fed into the hopper.

• A hydraulic ram pushes the material toward the low-speed, high-torque shredder rotor.

• The material loses its initial resistance at this stage and is divided into coarse pieces (e.g., 40-50 mm).

2. Stage: Direct and Enclosed Transfer Unlike traditional lines, material from the shredder in integrated systems does not pour onto a conveyor belt. Instead, it falls directly into the crushing unit below through a fully enclosed chute system, aided by gravity. This closed transition reduces dust and material loss to zero.

3. Stage: Fine Crushing (Granulator Section) Located at the bottom of the system, this is a high-speed (RPM) crushing unit.

• Material already in coarse form from the shredder is cut at high speed between the rotor and stator (fixed) blades.

• Granules reaching the desired size (e.g., 8-12 mm) pass through the screen at the bottom and are transferred to a blower or auger conveyor, ready for packaging or the extrusion line.

Advantages of Integrated Shredder and Granulator Systems

Choosing an integrated system instead of two separate machines provides significant strategic and financial benefits:

• Maximum Space Saving (Compact Design): Due to their vertically stacked design, integrated systems save up to 50% of factory floor space compared to separate machines and their connecting conveyors.

• Perfect Synchronization and PLC Automation: If the crushing unit below experiences an overload (amperage increase), the intelligent PLC panel detects it instantly and pauses the hydraulic ram of the shredder above. When the crusher clears, feeding resumes automatically. This seamless communication prevents jams and motor burnouts.

• Lower Energy Consumption: No extra conveyor motors are needed for material transport between machines. Furthermore, synchronous operation minimizes idling time for motors, lowering electricity consumption.

• Reduced Labor and Maintenance: Fewer operators are needed to manage the system due to a single control panel, one feed point, and the absence of intermediate transport elements. Cleaning is easier as dust and pollution are contained within the closed system.

Key Application Areas

Integrated systems are ideal for situations where a homogeneous final output (granule) is required and the initial form of the material is too large or hard to be crushed alone:

• Plastic Industry and Injection Scraps: Massive plastic purges, large defective parts, and thick-walled pipes are transformed into granules in a single step.

• Cable Recycling: Thick armored cables are opened and pre-cut in the shredder section, then reduced to sizes (typically 3-5 mm) where copper and plastic are separated in the crushing section.

• Electronic Waste (E-Waste): Computer cases, small appliances, and circuit boards are shredded into homogeneous, small-sized pieces ready for precious metal separation.

• Paper, Cardboard, and Wood Processing: Large paper rolls, pallets, and compressed cardboard blocks are reduced to the desired small dimensions in one move before briquetting or fuel (RDF) production.

Critical Technical Specifications

• Heavy-Duty Steel Chassis: A single-piece steel body reinforced to dampen different vibration frequencies from two machines, supported by anti-vibration mounts.

• Special Alloy Blade Technology: High-impact, wear-resistant rotary cutters (e.g., DC53 or Hardox) are used in the shredder section, while high-speed, sharp blades (e.g., SKD-11 / D2) are used in the granulator section.

• Active Cooling Systems (Optional): Integrated water-cooling jackets on the crusher housing and rotor bearings prevent heat-sensitive materials (like certain plastics) from melting and sticking to the blades.

• Hydraulic Maintenance Opening: The upper part of the system can be opened with hydraulic pistons at the press of a button, providing operators with a safe and wide area for blade sharpening or screen changes.

Integrated Shredder and Granulator Units are the right investment to overcome your facility's spatial constraints, lower energy costs, and manage two separate operations with a single smart machine. Contact our system experts to determine the most suitable configuration for your material type, hourly capacity (kg/h), and target granule size, and benefit from our specialized B2B project solutions.