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- Crushing and Screening
The key steps in varied and complex MBT systems:
reduces the input material to the desired particle size.
separates large from small and prepares the material for subsequent steps.
decomposes or dries out the organic components.
reclaims valuable materials from the waste, and saves natural raw materials.
- Refuse-derived fuels
make it possible to utilise the energy in non-recyclable materials.
helps improve the quality of MBT output.
A tough pre-shredder.
Pre-shredding brings the input material to a consistent particle size and prevents overlengths that might cause problems further on. Robust resistance to contraries is very important in pre-shredding.
The Terminator, with its special tooth geometries and innovative tool mounting, meets these requirements perfectly. Four different tool variants and stepless cutting gap adjustment allow sizing of the output for its intended purpose.
Drive can be hydraulic or mechanical. The hydraulic version has constant power control and stepless shaft speed adjustment, while the mechanical version uses a 2-speed reversing gearbox.
DRUM AND STAR SCREENS
Screening separates the shredded input material by size, to prepare for further processing to recover recyclables and energy from the waste. Reliable functioning and high separation precision are the main requirements screening technology must meet.
Komptech drum and star screeners with adjustable screen hole sizes meet these requirements. Combinations of multiple screeners can accomplish several screening steps in a very small space. This is of great advantage for subsequent recovery of recyclables.
On star screens, the particle size can be adjusted with the press of a button. On Komptech drum screens, also known as trommels, anti-dirt strips and feed worms configured for the material and throughput provide blockage-free operation.
TOPTURN AND TUNEL
Composting aims at stabilising the material quickly and with low emissions. The end product can be wet, for landfilling, or dry, for incineration.
The first step is often closed composting in tunnels or enclosed windrows. Once the emission spikes from the fastdecomposing substances have subsided, final composting follows with the aid of a windrow turner. Regular turning makes composting or drying proceed evenly and efficiently. The Topturn is ideal for the job, as its robust functionality lets it cope with the most demanding situations.
Options like watering and lateral displacement of the compost allow finetuning of the process
Recyclable recovery with high selectivity.
For waste materials to be recycled, they must first be separated from the waste stream, and then cleaned.
Screening and ballistic technology separates waste into multiple fractions. Without this, it is not possible to separate recyclables from contraries in the subsequent sorting step. For example, PET can be easily recovered form the rolling fraction output by the Ballistor, while aluminium can be readily extracted from a 50-100 mm screen fraction. The Ballistor offers up to four fractions, making it a central component in separating the waste stream into different final processing lines.
Its contrary-resistance and adjustable separation criteria make the Ballistor useful for a wide range of applications. Since it generates little air movement, little dust is produced.
Energy-efficient RDF production.
Energy-efficient RDF production requires not only effective contrary removal, but also fine shredding with steady power uptake.
The Rasor’s three worms draw the contraryfree material evenly into the rotor. The power consumption of the machine is correspondingly constant. At 150 rpm, a pulling endless cut shreds the material with a high throughput rate.
The blades can be turned repeatedly, and routine cutting gap adjustment is quick and easy. The screen basket surrounding the rotor lets operators produce 60 mm grain RDF for fluidised bed combustion or 30 mm grain for cement kilns.
Post-processing for higher quality.
Some products of an MBT system require post-processing in order to ensure that all of the material is under a certain particle size. In addition, post-processing saves energy costs in the fine shredding of refuse derived fuels.
Due to their low space needs, Multistar star screens are popular for post-processing. They screen compost-like MBT output and refuse derived fuels reliably, without using large amounts of energy.
The efficient, patented Cleanstar system keeps these star screens working efficiently and reduces maintenance needs. At each turn, an extra-long finger on every star leans its assigned gap.