1. Primary shredding and first screening
In the first comminution stage, the used tyres are preliminarily cut by a rotor shear of type VZ (CHEMA primary shredder). This machine type is suited for cutting tyres with a diameter of up to 3 metres into pieces of about 60 x 150 mm. By the downstream disk or vibration screen, the fine fraction is then conveyed to the post-comminution system and oversize material is returned again to the rotary shear.
2. Secondary shredding and FE separation
In the second stage, the material is processed on a granulator of type NZ (CHEMA secondary shredder). Depending on the used screen type, the pre-cut tyres are comminuted to a particle size ranging between 15 – 30 mm.