Shredder requirements

For this application, the shredder must be particularly resistant to foreign matter. Due to the high amount of abrasive materials such as soil, sand and other impurities, the machine must have specific features. The aim of shredding is to achieve a material flow that is as homogenous as possible to allow for subsequent processing. The MICROMAT series is especially well suited as a primary shredder for processing plastics thanks to the variety of construction options it comes in.

 

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Anforderung an den Shredder

Der Zerkleinerer muss dafür besonders robust und störstoffresistent ausgeführt sein, um die hohe Bandbreite an Inputmaterialien zu meistern. Das Ziel der Zerkleinerung ist eine wirtschaftliche Aufbereitung mit geringsten €/t-Kosten für den Betreiber mit einem stets konstanten Austrag von 50-100mm,  fix und fertig verwendbar zur Befeuerung im Zementofen Kalzinator oder als Wirbelschicht- Brennstoff. Der POLARIS als die Kompaktlösung erfüllt die Anforderungen am besten.

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Anforderung an den Shredder

Der Zerkleinerer muss dafür besonders robust und störstoffresistent ausgeführt sein, um die hohe Bandbreite an Inputmaterialien zu meistern. Das Ziel der Zerkleinerung ist eine wirtschaftliche Aufbereitung mit geringsten €/t-Kosten für den Betreiber mit einem stets konstanten Austrag von 50-100mm,  fix und fertig verwendbar zur Befeuerung im Zementofen Kalzinator oder als Wirbelschicht- Brennstoff. Der POLARIS als die Kompaktlösung erfüllt die Anforderungen am besten.

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Anforderung an den Shredder

Der Zerkleinerer muss dafür besonders robust und störstoffresistent ausgeführt sein, um die hohe Bandbreite an Inputmaterialien zu meistern. Das Ziel der Zerkleinerung ist eine wirtschaftliche Aufbereitung mit geringsten €/t-Kosten für den Betreiber mit einem stets konstanten Austrag von 50-100mm,  fix und fertig verwendbar zur Befeuerung im Zementofen Kalzinator oder als Wirbelschicht- Brennstoff. Der POLARIS als die Kompaktlösung erfüllt die Anforderungen am besten.

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Shredding

Shredding is an essential step in a smooth-running process chain. Untreated plastic waste either in baled or loose form is fed into the machine with wheel loaders or a conveyor belt.
The output is consistent, the cut precise and 90% of the output will be smaller than 60 mm with an output of up to 5 metric tons per hour.

 

Shredder requirements >>

PREWASHING AND FOREIGN MATTER SEPARATION

The requirements for prewashing are clearly defined. Pre-shredded plastics are often heavily contaminated and loaded with foreign matter. The rafter’s well-engineered technology effectively separates abrasive matter and prepares the material for all following processes.

 

GRANULATION

Now free from foreign matter, the material is granulated using a wet granulator that screens the material to the preferred grain size to make recycling particularly efficient.

 

PASTICS SEPARATION

Categorising plastics according to their specific weight. This step is executed with Lindner Washtech’s gravitator, a machine that combines state-of-the-art features with the tried-and-tested sink-float method. In this process, not only is it important that the output material is single-variety, but the machine’s construction must also be compact and efficient.

 

FRICTION WASHING

Efficient washing through friction. The Lindner Washtech friction washers clean even the smallest particles very effectively. The machine size can be adjusted to the customer’s specific throughput requirements, achieving rates of up to 4 metric tons per hour. The machine’s screens and paddles are also customisable.

 

MECHANICAL AND
THERMAL DRYING

The shredded and washed material is fed into a centrifuge where the plastic flakes are dried in controlled conditions. The resulting centrifugal forces contribute to cleaning and drying the materials. Finally, the material is thermally dried and can subsequently be transferred for extrusion.

CIRCULAR ECONOMY - PLASTICS AS A RAW MATERIAL

Processing plastics waste for a resource-saving plastic life cycle concept

Post-consumer waste is created by consumers, e.g. individuals and households. While in the past plastic waste used to be incinerated, these days it is considered an important raw material. To utilise post-consumer plastics, the aforementioned process is necessary. For recycling purposes, the material must be as clean as possible to prevent damage to machines and pre-empt inferior-quality products.

 

 

Lindner relies on tried-and-tested technology to guarantee high-quality material. The field of post-consumer plastics in particular demands high machine standards since the material might not only contain abrasive matter but also food scraps. The foreign object-resistant shredder and the high-end washing technology solution ensure a single-variety product ready for extrusion. Manufacturing companies can then turn the resulting lenticular plastic raw materials into the final product.

 

 

Post-consumer plastics recycling

Grain size<10 mm
Throughputup to 2000 kg/h
Subsequent processextrusion