Regeneration utilization method of rare earth permanent magnet material

A rare earth permanent magnet and permanent magnet material technology, applied in magnetic materials, chemical instruments and methods, magnetic objects, etc., can solve the problems of poor purification efficiency and effect, insufficient compliance rate, etc., to improve magnetic properties, avoid purity, improve The effect of purity

Inactive Publication Date: 2018-08-07
龙南市中利再生资源开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purification efficiency and effect of the traditional rare earth permanent

Method used

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[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0020] The present invention provides a technical solution: a method for the regeneration and utilization of rare earth permanent magnet materials, including impurity adsorption treatment, chemical solution derusting, permanent magnet material purification treatment, vacuum sintering treatment and post-processing. Permanent magnet materials are regenerated, the specific steps are as follows:

[0021] Step 1: Impurity adsorption treatment;

[0022] Step 2: Derusting wit...

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Abstract

The invention discloses a regeneration utilization method of a rare earth permanent magnet material. The rare earth permanent magnet material is subjected to regeneration treatment through fives waysof impurity adsorption treatment, chemical solution derusting, permanent magnet material purification treatment, vacuum sintering treatment and post processing treatment, and the regeneration and utilization method comprises the following specific steps of 1, impurity adsorption treatment; 2, chemical solution derusting; 3, permanent magnet material purification treatment; 4, vacuum sintering treatment; and 5, post processing treatment. Treatment is conducted through the steps, impurities and rust spots in rare earth permanent magnet waste can be removed, then the rare earth permanent magnet waste is subjected to secondary purification treatment through even mixing of heterosexual magnetic powder, a binder and a processing agent, the purity degree of the rare earth permanent magnetic material can be improved, and finally, the purity degree and magnetism of the rare earth permanent magnet waste can be improved through a heating and sintering mode.

Description

technical field [0001] The invention relates to the technical field of regeneration and utilization of rare earth permanent magnet materials, in particular to a method for regeneration and utilization of rare earth permanent magnet materials. Background technique [0002] Rare-earth permanent magnet materials refer to substances that can maintain strong magnetism for a long time after magnetization and remove the external magnetic field. They are called permanent magnets, hard magnets, or permanent magnets for short. Permanent magnet material refers to a substance that maintains magnetism for a long time after magnetization. Rare earth permanent magnet material, that is, rare earth permanent magnet alloy. Permanent magnet materials contain rare earth metals as alloying elements. In permanent magnets where soft magnetic phases and hard magnetic phases coexist, Nb mainly gathers at grain boundaries, which hinders the growth of two-phase grains during the crystallization proce...

Claims

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Application Information

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IPC IPC(8): B09B3/00H01F1/057
CPCB09B3/00H01F1/057B09B3/10B09B3/80B09B3/40
Inventor 曾胜山
Owner 龙南市中利再生资源开发有限公司
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