The process of converting a full tyre into 20-25 mm steel-free rubber chips is as follows:
The full tyres are fed into the Fornnax SR-Series primary shredder through the Infeed conveyor system. This equipment is designed to reduce the whole tyre into variable-size strips using high torque and low speed. The shredded tyre strips are approximately 50mm wide x 300mm long, with occasional pieces up to 400mm long. Strips sized up to 150mm undergo a screening process. Strips larger than 150mm are sent back to the primary shredder to produce consistently sized shreds ranging from 50mm to 150mm in size.
The primary tyre shreds are then fed into the Fornnax R-Series secondary shredder through a conveyor feed system. This heavy-duty medium-speed equipment is equipped with a screening system that produces tyre chips measuring 20-30 mm, known as rubber mulch. During this process, ferrous metal is separated from the bead and tread area and then extracted using an over-band magnet. This results in rubber mulch that is up to 98% steel-free, making it suitable for further processing. At this stage, the material can be marketed as high-quality low-steel Tyre Derived Fuel (TDF) for various combustion applications.