How to achieve the recycling of magnets?

With the development of science and technology and the improvement of people's living standards, magnets are more and more widely used in daily life and industrial production. However, the magnet will gradually lose its magnetism during use and become a waste magnet. If these waste magnets are discarded at will, they will not only pollute the environment, but also waste valuable resources. Therefore, how to realize the recycling of magnets has become an urgent problem to be solved. We will discuss the recycling and classification of magnets, remanufacturing and recycling, as well as the significance and prospect of recycling.

1、The recovery and classification of magnets

1.1、Recovery of magnets

The recycling of magnets is the first step to achieve its recycling. At present, China has established a relatively perfect waste materials recycling system, including waste metal, plastic, paper and so on. However, the recycling of used magnets is still relatively small. In order to promote the recycling of magnets, the government and enterprises should increase the publicity of waste magnet recycling and improve the public's awareness and awareness of magnet recycling. At the same time, it can also be convenient for the public to send waste magnets to recycling points by establishing waste magnet recycling sites and carrying out waste magnet recycling activities.

1.2、Classification of magnets

In the recycling process, it is very important to classify the waste magnets. Different types of magnets have different properties and uses, so they need to be classified according to their properties and uses. In general, magnets can be divided into two categories: permanent magnets and soft magnets. Among them, permanent magnets can be divided into NdFeb magnets, ferrite magnets, aluminum-nickel-cobalt magnets, etc. Soft magnets can be divided into silicon steel sheets, electrical steel strips, amorphous alloys and so on. By classifying waste magnets, we can better understand their properties and uses, and facilitate subsequent remanufacturing and recycling.

2、The remanufacturing and recycling of magnets

2.1、The remanufacturing of magnets

The remanufacturing of magnets refers to the process of making old magnets into new magnets after certain treatment. At present, the commonly used remanufacturing methods are melting, reduction, hydrogenation and so on. These methods can extract useful elements from used magnets and then re-make new magnets through chemical reactions or physical effects. For example, for Ndfeb magnets, they can be melted and recrystallized into new NdFeb magnets by melting method; For ferrite magnets, new ferrite magnets can be made after they are reduced to metal oxides by reduction method.

2.2、The recycling of magnets

In addition to remanufacturing, waste magnets can also realize their value through recycling. Recycling refers to the process of using waste magnets in other fields after certain treatment. For example, waste magnets can be used to manufacture magnetic materials, magnetic devices, magnetic sensors, etc. It can also be used to manufacture magnetic adsorbents, magnetic catalysts, etc. In addition, waste magnets can also be used to make magnetic art, magnetic toys and so on. Through recycling, the waste magnet can be turned into treasure and the recycling of resources can be realized.

3、 The significance and prospect of magnet recycling

3.1、significance

(1) Saving resources: magnets are an important strategic resource, and their mining and processing require a lot of energy and resources. By recycling used magnets, the need for new magnets can be reduced, thereby saving resources.
(2) Protect the environment: Waste magnets if discarded at will, will cause pollution to the environment. By recycling waste magnets, environmental pollution can be reduced and ecological environment can be protected.
(3) Promote economic development: The development of magnet recycling industry can drive the development of related industries and promote economic growth. At the same time, it can also create more job opportunities and ease the employment pressure.

3.2、foreground

With the continuous progress of science and technology and the improvement of people's awareness of environmental protection, the prospect of magnet recycling is very broad. In the future, we can look forward to the emergence of more efficient and environmentally friendly magnet recycling and remanufacturing technology; At the same time, we can also look forward to the application and expansion of magnets in more fields. It is believed that in the near future, magnet recycling will become an important industrial field and make greater contributions to the sustainable development of human society.

4、Conclusion

It is a complicated and important subject to realize the recycling of magnets. Through the implementation of measures such as recycling and classification, remanufacturing and recycling, we can effectively reduce the pollution of the environment and the waste of resources. At the same time, the recycling of magnets is also of great significance and broad prospects. In future research and practice, we should continue to explore more efficient and environmentally friendly magnet recycling and remanufacturing technology; At the same time, strengthen policy guidance and market promotion efforts to promote the healthy development of magnet recycling industry. It is believed that in the near future, with the continuous progress of science and technology and the improvement of people's awareness of environmental protection, the recycling of magnets will achieve more remarkable results and make greater contributions to the sustainable development of human society.

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