Wood Pallet Shredder with Magnetic Separator for Nail Removal
The ‘wooden pallet shredder + magnetic separation system’ developed by SUNY GROUP combines mechanical shredding with automatic iron removal to enable the continuous processing of waste wooden pallets. This not only improves the purity of the recovered timber but also reduces wear and tear on downstream equipment and labour costs, making it a common pre-treatment solution in the timber recycling industry.
Waste wooden pallets are typically large and heavy in structure, containing a significant number of iron nails and metal components. Ordinary shredding equipment is prone to issues such as material jamming and severe blade wear. Consequently, the recycling of wooden pallets usually employs low-speed, high-torque twin-shaft shredders for pre-treatment.
This type of equipment utilises the shearing action of twin-shaft cutting rollers to rapidly shred entire pallets into small pieces measuring approximately 30–100 mm. Compared to traditional hammer mills, twin-shaft shredders are better suited to processing wood containing nails, offering the following advantages:
Greater adaptability to wooden pallets containing nails
Low operating speed, resulting in relatively low noise and dust levels
Capable of continuous feeding, reducing the need for manual intervention.
Cutting blades made from wear-resistant alloy steel extend maintenance intervals.
In actual recycling operations, many wooden pallets consist not only of standard timber but also contain impurities such as packaging crates and construction waste wood; consequently, equipment stability is more critical than mere shredding capacity.
Magnetic Separation System: Automatic separation of iron nails and metallic impurities
If iron nails are not separated promptly after the wood pallets have been shredded, this will directly affect the subsequent utilisation of the wood. For example, when producing biomass pellet fuel, metallic impurities can damage the pelletiser; when used in particleboard production, they will affect the quality of the boards.
Consequently, the magnetic separation system is a crucial component of the entire recycling line.
It utilises a strong magnetic field to automatically attract metal contaminants such as nails and screws, enabling the continuous separation of wood from metal. Compared to manual screening, its advantages are primarily reflected in:
More consistent nail separation efficiency
Reduced labour costs and safety risks
Improved wood purity
Reduced failure rates of downstream equipment
With the volume of construction waste wood, logistics pallets, and packaging timber continuing to grow, simple ‘coarse crushing’ is no longer sufficient to meet modern recycling demands. An increasing number of recycling companies are focusing on wood purity, metal separation rates, and the efficiency of subsequent resource recovery. If you are interested or require further information, please feel free to contact us at any time.
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