Eddy current separator

Introduction to eddy current separators

In the resource recycling and solid waste treatment industries, accurate material sorting is a key link in achieving efficient recycling of resources. As an advanced equipment that uses the principle of electromagnetic induction to sort materials, eddy current separators occupy an important position in the field of metal and non-metal material separation with their efficient and accurate sorting capabilities, and provide strong support for the resource processing of various types of waste. ​

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1. Working principle

The core working principle of eddy current separators is based on the combined action of electromagnetic induction and centrifugal force.
For conductive metal particles in materials (such as non-ferrous metals such as copper, aluminum, and zinc), eddy currents will be induced inside the metal. Under the dual effects of repulsive force and the material's own inertia, metal particles will deviate from the original material conveying trajectory and be ejected to the designated metal collection area. ​
However, non-metallic particles and non-conductive materials in the material cannot induce eddy currents in the alternating magnetic field, and will not be affected by repulsive force. They will continue to move along the normal conveying trajectory and eventually fall into the non-metal collection area. Through this principle, eddy current separators can quickly and effectively separate metals from non-metals in materials.​

II. Scope of application​
The eddy current separator has a wide range of applications and can meet the material sorting needs in various scenarios:​
In the field of solid waste treatment, it can sort slag, industrial solid waste, construction waste, etc. after the incineration of domestic waste, and separate valuable non-ferrous metals such as copper, aluminum, and zinc from them, thereby improving the resource recycling rate of solid waste. ​
In the field of waste home appliance recycling, the eddy current separator can accurately separate the metal parts from the dismantled waste refrigerators, color TVs, washing machines, air conditioners and other home appliance debris, providing convenience for the resource recycling of home appliances. ​
In the field of automobile dismantling and recycling, for mixed materials generated by automobile dismantling, such as mixtures of plastics, rubber and metals, it can efficiently separate the non-ferrous metals from them and realize the secondary utilization of resources. ​
In the field of electronic waste treatment, such as materials after the crushing of waste circuit boards, the eddy current separator can separate metal particles such as copper from them, helping the harmless treatment and resource recycling of electronic waste.​
In addition, in the plastic recycling industry, when metal impurities are mixed into plastics, the eddy current separator can effectively remove these metal impurities and improve the purity of plastic recycling; in the field of ore processing, it can be used to recover metal minerals from ore tailings and improve resource utilization. ​

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III. Product advantages ​
High sorting efficiency: The magnetic roller of the eddy current separator has a high rotation speed, and the alternating magnetic field generated is strong. The induction and repulsion reaction to metal particles is rapid, which can achieve continuous and rapid material sorting. A single device can process several tons to tens of tons of materials per hour, greatly improving the efficiency of sorting operations. ​
High sorting accuracy: The equipment adopts advanced magnetic circuit design, and the magnetic field distribution is uniform and stable. It can accurately identify and separate metal particles with smaller particle size (usually metal particles with a particle size of more than 0.5mm can be sorted). Even fine metal impurities can be effectively separated, ensuring the purity of the material after sorting.​
Strong adaptability: According to the characteristics of different materials (such as particle size, density, conductivity, etc.), the sorting effect can be flexibly adjusted by adjusting the parameters such as the magnetic roller speed, conveyor belt speed, and material guide plate angle to meet the sorting needs of various materials. ​
Stable and reliable operation: The main structure of the equipment is made of high-strength steel, and the magnetic roller is made of high-performance permanent magnetic material, which has strong wear and corrosion resistance. It can operate stably for a long time in harsh working environments, reducing equipment failures and maintenance times. ​
High degree of automation: Equipped with a complete automatic control system, it can realize the automatic operation of equipment start and stop, parameter adjustment, fault alarm and other functions, reduce manual intervention, reduce the labor intensity of operators, and improve the safety and stability of operations. ​
Energy saving and environmental protection: During the operation of the equipment, no water resources and chemical agents are required, only a small amount of electricity is consumed, and no secondary pollution will be generated. It conforms to the production concept of energy saving and environmental protection, which is conducive to reducing the impact on the environment.​

The eddy current separator has become an indispensable key equipment in the modern resource recycling system with its unique electromagnetic induction separation principle, wide application range, excellent product characteristics and important significance in resource recycling, providing a solid technical guarantee for the reduction, harmlessness and resource treatment of waste.

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