In the process of e-waste recycling, people use magnetic separator equipments to separate and recover different types of metals, especially ferromagnetic metals. Here are some common types of magnetic separators used in e-waste recycling, maybe you will be interested in it.
When selecting a suitable magnetic separator for e-waste recycling, it is important to consider the nature of the materials, the processing volume, and the separation requirements. These magnetic separation devices can effectively improve the efficiency of e-waste recycling and reduce resource waste.
Magnetic Drum Separator
Permanent Magnetic Drum Separator: Utilizes permanent magnets to separate ferromagnetic metals from e-waste.
Electromagnetic Drum Separator: Uses an electromagnetic coil to generate a magnetic field to separate ferromagnetic materials.
SUNRISE’ Drum Separators remove both large and small pieces of iron contaminants from material processing lines. Powerful permanent magnets enable more efficient separation performance for a broader range of applications than ever before. They provide years of trouble–free automatic removal of tramp iron from heavy flows of bulk materials, including large and highly abrasive materials.
As material reaches the drum, the magnetic field attracts and holds ferrous particles to the drum shell. As the drum revolves, it carries the material through the stationary magnetic field. The shell releases the nonmagnetic material to fall freely, while the magnetic particles remain firmly held until they are carried out of the magnetic field.
Overband Magnetic Separator
Also known as a suspension magnet, it hangs above conveyor belts and automatically removes ferromagnetic metals from large quantities of non-magnetic materials.
Magnetic Pulley
People install these magnetic pulleys at the discharge end of conveyor belts to attract and separate metal particles, allowing non-metallic materials to be discharged smoothly.
Eddy Current Separator
This device separate non-ferromagnetic metals (such as aluminum and copper). It generates eddy currents to repel these metals, separating them from other materials.
Dry Magnetic Separator
Dry magnetic separators can efficiently separate ferromagnetic substances from mixtures. They feature a simple structure, easy operation, and maintenance, and are technically mature and stable in performance, making them widely used in the e-waste recycling industry.
They include a magnetic drum, vibrating feeder, and conveyor belt. Materials are evenly distributed on the conveyor belt by the feeder, and under the action of the magnetic drum, ferromagnetic particles are attracted, while non-magnetic particles continue to move and are discharged.
Magnetic Plates and Magnetic Bars
Install magnetic plates above conveyor belts or within chutes to remove larger ferromagnetic contaminants. We install magnetic bars in hoppers, chutes, and pipes to perform similar functions.
Magnetic Grates
Composed of magnetic tubes arranged in a grid. They are used to remove ferromagnetic contaminants from free-flowing dry products such as grains and powders.
Why Recommend Dry Magnetic Separators over Wet Magnetic Separators in E-Waste Recycling？
- 1
Dry Materials: E-waste, such as discarded circuit boards and old electronics, typically exists in a dry state. Dry magnetic separators are better suited for handling these dry materials without the need for pre-wetting treatment.
- 2
Water Resource Conservation: Dry magnetic separators do not require water, saving a significant amount of water resources and related water treatment costs. Wet magnetic separators use water as a medium, which produces wastewater containing heavy metals and other contaminants, necessitating additional wastewater treatment steps, thereby increasing treatment costs and environmental burdens.
- 3
Simplicity: Dry magnetic separators have a relatively simple structure, making them easier to operate and maintain without the need for complex water treatment systems. Wet magnetic separators involve pumps, pipes, and other components, making the system more complex and harder to maintain.
- 4
Metal Separation Efficiency: Dry magnetic separators are highly efficient in separating ferromagnetic metals (such as iron and nickel), meeting the separation requirements of e-waste recycling well. People mainly use wet magnetic separators to process mineral raw materials with fine particles, and they do not commonly apply them in e-waste recycling.
- 5
People can effectively control the dust produced by dry magnetic separators through the use of enclosed systems and dust removal devices. Wet separators can make equipment and the work environment humid, leading to other safety and hygiene issues.
- 6
People have widely applied dry magnetic separators in the e-waste recycling industry, achieving mature technology and stable equipment performance. In contrast, they mainly use wet magnetic separators in the mining industry, resulting in relatively less applicability and technical accumulation for e-waste recycling.
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