The primary shredder. The aim of this shredding is to obtain homogeneous, sortable material in a continuos stream, important for the next steps in the process.
In the second step, the pre-shredded material arrives in a continuous stream. The ferrous contaminants is sorted out with magnet, undesirable in SRF and often found in the input material.
The material arrives to the screen in a continuous stream of material, now free from ferrous metals. The small fractions that mainly contain inert waste get screened and separated from the SRF.
The material is fed continuously into a drum separator where it is hit with an air current while it is in free fall. Light materials are transported by air to the conveyor belt, whereas heavy contaminants fall to the ground .
The material is shredded a second time in the process called fine shredding or granulation. The material is now free from contaminants and has the correct size to be catalogued as SRF.