First-stage size reduction for PCB and e-waste
Printed circuit boards and complete electronic assemblies cannot go straight into a separation stage. They arrive as whole units — housings, connectors, heat sinks, cable tails still attached — and the valuable fraction is locked inside that geometry. The machines in this range exist to break that geometry down: a double-shaft unit opens up bulky assemblies and cable bundles, and a single-shaft crusher takes the result down to a consistent size that a downstream separator or granulator can work with.
Both units are low-speed and high-torque, which matters for this material. High-speed impact mills tend to smear aluminium and copper across the plastic fraction, and that contamination is difficult and expensive to undo. Slow shearing keeps the metal in recognisable pieces, which is what makes later separation work.
Which of the two you need
- Double-shaft shredder — the opening stage. Counter-rotating rotors with hooked blades grab whole units and thick armoured cable without wrapping, and tolerate the occasional metal block that would stop a finer machine.
- Single-shaft crusher — the sizing stage. A hydraulic pusher feeds material against a rotor, and a screen under the rotor holds the output at a set size, giving a much tighter particle range than a shredder alone.
In practice the two are used in series: shred first to break the assemblies, crush second to control the output size. A plant that only shreds gets an uneven product; a plant that only crushes spends a lot of time on material that a shredder would have handled faster.
What the downstream stage expects
Separation equipment is designed around a feed window. Deliver material that is too coarse and the metal stays locked in the plastic; too fine and you generate dust that carries value out of the process. We size the screen on the crusher against whatever comes next in your line, so tell us whether the output feeds a granulator, an electrostatic separator or a smelter's specification.
Frequently asked questions
Can these machines handle whole hard drives and power supplies?
Double-shaft units will take complete assemblies within the chamber dimensions. Very dense items such as sealed motor blocks should be checked with us first, because they can stall a small drive even when they physically fit.
How do I control dust when crushing boards?
Dust is generated at the crusher, not the shredder. A dust collection connection at the discharge and a water mist at the feed point are the usual measures; both can be specified with the machine.
What blade material is used?
Blades are 55SiCr hardened to 52–54 HRC, which holds an edge through the abrasive fillers found in board laminate. They are reversible and replaceable individually rather than as a set.