Sorting the wide range of materials that arrives at recycling, waste transfer stations and landfills is just one of the challenges faced when processing waste. Implementing the right equipment is essential and important benefits can be realized when using pre-shredding and wind sifting technology for waste separation.
Primary Shredding Solutions
Pre-shredding and wind sifting equipment help extend the life of a landfill due to the better compaction of waste material. A higher volume of materials can also be recycled by pre-shredding waste in a transfer station or MRF. This ensures that even the bulkiest of items get broken down, and allows the addition of more payloads to trailers in the transfer station.
These primary shredding solutions also generate a better segregation of material by using pre-shredding and wind sifting to separate waste into heavy, medium or light classes of material. By shredding the waste before it is baled, bale weight can be increased. Modern waste processes often involve reducing the size and volume of difficult-to-handle materials. Here, shredding is one of the most effective ways of doing so reliably and with low operating costs.
Efficient shredding equipment makes it possible to break down and sort virtually all kinds of material for reuse or recycling. Available in both plant based and mobile configurations and in a wide range of sizes, pre-shredders provide efficient and aggressive shredding of an unusually wide range of materials. They are designed to meet the special needs of plants in which the incoming material is extremely varied in both size and composition, and may also contain unpredictable components. The combination of a large cutting table and a twin-shaft shredding system makes it possible to shred almost any kind of material and that there are no problems with bridging.
Because they can easily be moved from one place to another, mobile shredders in particular make an exceptionally versatile primary shredder solution. Typically, wind sifting machines are installed after a pre-shredding, screening and ferrous metal removal step to separate the high BTU value material from contaminates like rock, gravel and nonferrous material.
Three Basic Components
This unique technology essentially consists of three basic components: the conveyor belt, the nozzle and the rotation drum. The input material is preferably spread in a single layer across the entire width of the conveyor belt. The material is then transported at an adjusted speed up to the discharge edge. An adjustable nozzle produces an upward stream of air on the discharge edge.
The air stream gathers on the upper area of the rotation drum and is guided into the expansion room with the laminar flow. The material meets the stream of air and is separated into light and heavy material. The light material reaches the expansion room via the rotating drum. Here the speed of the air is radically reduced and the light materials trickle onto a container or land on a discharge conveyor. The heavy materials fall downward into a container or onto a discharge conveyor before reaching the rotation drum. The volume of air introduced in the expansion room is extracted in the upper area and sucked back in via the fan or guided into a filter system depending on the type of application.
These systems are highly efficient and designed to perform with a high degree of separation efficiency. They allow for easy adaption to any material stream and are available in stationary, semi-mobile and mobile configurations in many different sizes and for different fields of application:
- MSW
- C&D
- Post Industrial Waste
- Composting Sites
- RDF Production
Working in line with other equipment, pre-shredding and wind sifting machines are commonly set up in plants to operate in conjunction with conveyors, screens and secondary shredding equipment.
The Key to Efficiency
Shredding and proper separation of materials is the key to efficiency and reliability in modern waste treatment processes—and to the profitability of companies in the waste processing industry.
eFACTOR3, LLC (Charlotte, NC) brings together a keen understanding of environmental, engineering and equipment issues. Whatever you intend to recycle or turn into an alternative fuel, eFACTOR3 can provide a custom solution to meet your needs. They also provide systems integration and installation to ensure the success of clients. With a team of quality manufacturers, you’ll get the best solution to meet the challenges of your unique environment. For more information, call (877) 801-3232, e-mail [email protected] or visit www.efactor3.com.