The production of precisely defined particle classes on a larger scale is most efficient with a stationary combination of low speed shredder and star screens.
The two-stage compact system can be used to prepare various classes of waste wood for material recycling or energy recovery. The first step is shredding by a Crambo. The shredding teeth and screen basket size are configured for the input material and desired output product.
The objective is a homogeneous shred with the lowest possible amount of fine fraction.
The second step is separation of the useful fraction and for this a Multistar SE star screen is used. Automatic return of the overlengths to the shredder by a conveyor belt reduces time and costs for feeding.
Low speed shredding
The process starts with the Crambo low-speed dual-shaft shredder. The teeth and screen basket size are configured for the input material and desired end product. The objective is a homogeneous shred with the lowest possible amount of fine fraction, and a steady supply to downstream machines.
Separation of metals
Metallic contraries in the output product are not desired. An overbelt magnet pulls ferrous metal items out of the shred stream. It is installed in the line of material flow, for maximum
effectiveness.