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Magnetic material and preparation method thereof

A technology of magnetic materials and waste, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problem of insufficient coercivity of materials, and achieve the effect of improving magnetic properties, high social value, and improving the environment

Active Publication Date: 2018-01-23
苏州圆格电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coercive force of the material prepared by this method is not high enough.

Method used

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  • Magnetic material and preparation method thereof
  • Magnetic material and preparation method thereof
  • Magnetic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A magnetic material, the magnetic material is prepared by the following method:

[0029] 1) Put phosphor powder waste and permanent magnet waste in a roasting furnace at 500°C for pretreatment; the weight ratio of phosphor powder waste to permanent magnet waste is 1:1. The milled waste was mixed with Na 2 CO 3 mixed and treated at 680°C for 2 hours, where Na 2 CO 3 The mass ratio of the roasted fluorescent powder waste is 4:1; add hydrochloric acid to the obtained reaction product, and the mass ratio of the reaction product to hydrochloric acid is 1:1; put the prepared mixed solution into a 70°C constant temperature water bath Heating for 2 hours, then filtering to obtain a leach solution containing rare earth elements; mixing 121g / L oxalic acid solution with the leach solution to precipitate compounds, the amount of oxalic acid solution is 35-45% of the mass of the roasted waste, and washing the precipitated compounds with water After 3-5 times, collect the precipi...

Embodiment 2

[0034] A magnetic material, the magnetic material is prepared by the following method:

[0035] 1) Put phosphor powder waste and permanent magnet waste in a roasting furnace at 650°C for pretreatment; the weight ratio of phosphor powder waste to permanent magnet waste is 1:2. The milled waste was mixed with Na 2 CO 3 Mix and treat at 680-810°C for 4 hours, where Na 2 CO 3 The mass ratio of the roasted fluorescent powder waste is 4:1-1.5; add hydrochloric acid to the obtained reaction product, and the mass ratio of the reaction product to hydrochloric acid is 2:1; put the prepared mixed solution into 80°C constant temperature water Heated in the bath for 3h, then filtered to obtain a leachate containing rare earth elements; the compound was precipitated after mixing the oxalic acid solution of 121g / L with the leachate, and the amount of the oxalic acid solution was 45% of the mass of the roasted waste material, and the precipitated compound was washed with water After 3-5 t...

Embodiment 3

[0040] A magnetic material, the magnetic material is prepared by the following method:

[0041] 1) Put phosphor powder waste and permanent magnet waste in a roasting furnace at 600°C for pretreatment; the weight ratio of phosphor powder waste to permanent magnet waste is 1:2. The milled waste was mixed with Na 2 CO 3 mixed and treated at 800°C for 4 hours, where Na 2 CO 3 The mass ratio of the roasted fluorescent powder waste is 4:1.5; add hydrochloric acid to the obtained reaction product, and the mass ratio of the reaction product to hydrochloric acid is 2:1; put the prepared mixed solution into a constant temperature water bath at 80°C Heating for 3h, then filtering to obtain a leach solution containing rare earth elements; the oxalic acid solution of 121g / L is mixed with the leach solution to separate out the compound, the amount of the oxalic acid solution is 45% of the quality of the waste material of the roasting treatment, and the precipitated compound is washed wit...

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Abstract

The invention discloses a magnetic material and a preparation method thereof. The magnetic material has a uniform tissue and a strong structure; the anti-corrosion capability of the material can be improved; and the magnetic property is also improved. The magnetic material has good stability and practicability, and can be widely applied to various fields of an electronic device, an aerospace technology, computer equipment, a magnetic separator, communication equipment, medical equipment, an electric bicycle, an electronic toy and the like. According to the preparation method of a permanent magnet material disclosed by the invention, wastes are fully utilized as an alloy raw material directly; the composition proportion is flexible; the quality control is in place; the cost can be reduced; the process is simple; a power waste with high oxygen content is fully utilized; the method is environment-friendly and has high social value; and the environment is effectively improved.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a magnetic material and a preparation method. Background technique [0002] Generally speaking, magnetic materials refer to strong magnetic substances, which are ancient and widely used functional materials, and the magnetism of substances has been recognized and applied by people as early as 3000 years ago. For example, natural magnets were used as compass in ancient China. Modern magnetic materials have been widely used in our lives, such as using permanent magnet materials as motors, core materials used in transformers, magneto-optical disks used as memories, magnetic recording floppy disks for computers, etc. According to Dabit Information, magnetic materials are closely related to informatization, automation, mechatronics, national defense, and all aspects of the national economy. It is generally believed that magnetic materials refer to substances that can direct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/058H01F1/08C22C38/08
CPCC22C38/002C22C38/005C22C38/02C22C38/08C22C38/32H01F1/058H01F1/08
Inventor 李庆芳赵浩峰王玲王巧玲刘妍慧张仕昭张泽中许琪曼阿穷牟雯婷李树岭张光旭王槐亮
Owner 苏州圆格电子有限公司
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