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Method for recycling motor

A motor and magnet technology, applied in the field of motor reuse, can solve the problems of poor energy efficiency and inability to separate

Active Publication Date: 2012-07-18
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, in this conventional method, there is a problem that the separation cannot be performed unless it is performed at a temperature higher than the Curie temperature of the rare earth magnet. Therefore, it is necessary to keep the Curie temperature of the rare earth magnet during the separation. For example, High temperature conditions around 400°C, poor energy efficiency

Method used

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  • Method for recycling motor
  • Method for recycling motor

Examples

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Embodiment 1

[0039] First, a recycling method of the separated rotor 2 will be described.

[0040] like figure 1 and image 3 As shown, three types of rotors 2 separated from the motor 1 were put into the atmospheric atmosphere furnace 4 . At this time, the three types of rotors 2 put into the atmospheric atmosphere furnace 4 are, figure 2 The ferrite magnet 6a of (a) is assembled in the rotor 2A of the rotor core 2a, figure 2 The neodymium magnet 6b of (b) is assembled in the rotor 2B of the rotor core 2a and figure 2 In (c), the neodymium magnet 6b and the samarium cobalt magnet 6c are mixed and assembled in the rotor 2C of the rotor core 2a.

[0041] Then, after the rotor 2A, the rotor 2B, and the rotor 2C were charged into the atmospheric atmosphere furnace 4, the temperature inside the atmospheric atmosphere furnace 4 was raised to 380° C. and held for 30 minutes. At this time, in the atmospheric atmosphere furnace 4, the resin covering the metal part is ashed and removed, and...

Embodiment 2

[0052] Next, a method of recycling the separated stator 3 will be described.

[0053] like figure 1 and Figure 4 As shown, a plurality of stators 3 separated from a motor 1 are put into a chain crusher 5 . At this time, the rotation shaft 5c of the chain crusher 5 is driven to rotate by the drive of the motor 5d, and the chain 5a connected to the rotation shaft 5c is rotated in the cylindrical body 5b.

[0054] And, the stator 3 put into the chain crusher 5 is knocked for about 1 minute by the chain 5a rotating in the cylinder 5b, thereby crushing the silicon steel plate or other metals such as aluminum and copper coils forming the stator core, And the resin covering the stator 3 is pulverized. Here, other metals such as aluminum refer to unmagnetized metals. In addition, since the silicon steel sheet and other metals are crushed by the impact of hitting the flexible chain 5a, the silicon steel sheet itself is hardly deformed and crushed, and does not become entangled wit...

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Abstract

The invention proposes a method for reusing a motor, wherein after the recovered single kind or plural kinds of motors are separated into rotors and stators, magnets used in the rotors are recovered according to each kind of separated raw materials and the kinds of recycling. The method for reusing a motor comprises periodically heating the rotor cores (2a) of a plurality of motors (1) of different types of magnets (6) composed of a single kind of magnet raw materials (6 ') to a curie temperature corresponding to the type of the magnets (6); and in each stage, maintaining the predetermined time in accordance with the curie temperature corresponding to the magnets (6); and sequentially recycling magnet raw materials (6 ').

Description

technical field [0001] The present invention relates to a motor recycling method for separately recovering various raw materials from waste motors. Background technique [0002] In recent years, attention has been drawn to next-generation eco-friendly vehicles such as hybrid vehicles and electric vehicles from the viewpoint of energy conservation and ecology, and various companies in the automotive industry are developing and selling next-generation eco-friendly vehicles. The progress has been remarkable, and especially in the motor and the battery, which are called the heart of a hybrid vehicle or an electric vehicle, miniaturization and high performance are required, and further development is required in the future. In addition, raw materials such as rare metals and rare earths are used in rare earth magnets used in motors, and there are concerns about the supply of them. [0003] However, rare earth magnets containing the above-mentioned rare earths (rare earth elements...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/00H02K15/03
CPCY02T10/641Y02P10/20Y02T10/64Y02W30/82
Inventor 新井义明古贺沙织五十岚和则
Owner MITSUBISHI MATERIALS CORP
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