Method for preparing high-performance magnet by using reclaimed material of wet-pressing permanent magnet ferrite

A technology of permanent magnet ferrite and recycled materials, applied in the direction of inorganic material magnetism, can solve the problem of low utilization rate of recycled materials, achieve the effect of reducing material cost, reducing slurry viscosity and improving utilization rate

Inactive Publication Date: 2019-03-01
ANHUI SINOMAG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low utilization rate of recycled materials of permanent magnet ferrite wet-pressed magnetic tile manufacturers, to provide a method for preparing high-performance magnets with wet-pressed permanent magnet ferrite recycled materials, and to realize permanent magnet ferrite The recycling of recycled materials turns waste into treasure, reduces the production cost of materials, and improves economic benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for preparing a high-performance magnet with wet-pressed permanent ferrite recycled materials, the specific operation steps are as follows:

[0034] (1) Recycled material crushing pretreatment

[0035] Take 500g of reclaimed material and carry out fine pulverization by water ball mill, dry at 800°C until the moisture content is 1.0%, crush and sieve after drying, the aperture of the standard sieve for crushing and sieving is 60 mesh.

[0036] (2) Weighing ingredients

[0037] Weigh an appropriate amount of ingredients, of which, Fe 2 o 3 Powder 80g, CaCO 3 Powder 3g, La 2 o 3 Powder 4g, Co 2 o 3 Powder 1.5g, SiO 2 Powder 1g, Sorbitol 1.5g, NH 4 HCO 3 Powder 5g.

[0038] (3) Grinding once

[0039] Weigh 500g of reclaimed materials and appropriate ingredients and put them into a sand mill, add 12kg of steel balls and 3.8kg of water, and carry out water ball milling. The water ball milling time is 3 hours, and the average particle size of the abrasive ...

Embodiment 2

[0048] A method for preparing a high-performance magnet with wet-pressed permanent ferrite recycled materials, the specific operation steps are as follows:

[0049] (1) Recycled material crushing pretreatment

[0050] Take 500g of reclaimed material and carry out fine pulverization by water polo mill, dry at 150°C until the moisture content is 1.2%, crush and sieve after drying;

[0051](2) Weighing ingredients

[0052] Weigh an appropriate amount of ingredients, of which, Fe 2 o 3 Powder 60g, CaCO 3 Powder 7g, La 2 o 3 Powder 3g, SiO 2 Powder 2g, Isomalt 6g, H 3 BO 3 Powder 2g, CH3COOH 3g.

[0053] (3) Grinding once

[0054] Put 500g of sieved reclaimed material and appropriate amount of ingredients into a sand mill, add 12kg of steel balls and 4kg of water for water ball milling, the water ball milling time is 1.5h, and the average particle size of the grinding slurry is 0.95μm.

[0055] (4) Pre-burning

[0056] Pre-fire the mixture after primary grinding, set th...

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Abstract

The invention discloses a method for preparing a high-performance magnet by using a reclaimed material of wet-pressing permanent magnet ferrite. The method comprises the following operation steps: (1)pretreating the reclaimed material by smashing; (2) weighting ingredients; (3) firstly grinding; (4) pre-burning; (5) secondarily grinding; (6) sintering. According to the invention, the reclaimed material is finely processed and a pre-burning process is added, so that the use ratio of reclaimed material is greatly increased; the technical problems of low use value of reclaimed material of permanent magnet ferrite and difficulty in producing high-performance permanent magnet ferrite by fully utilizing the reclaimed material of permanent magnet ferrite in the prior art are solved; the recycling of the reclaimed material of permanent magnet ferrite is realized; waste is turned into wealth; the use ratio of reclaimed material is increased; the material cost is lowered; the cost performance of material is increased.

Description

Technical field: [0001] The invention relates to the technical field of magnetic materials, and mainly relates to a method for preparing high-performance magnets by wet-pressing recycled permanent ferrite materials. Background technique: [0002] At present, the recycled materials of domestic permanent magnet ferrite wet-pressed magnetic tile manufacturers account for more than 40% of the raw material input. ). The general processing methods of recycled materials are divided into: method 1, grinding separately, and downgrading to use as low-performance products; method 2, using it with pre-burned materials; method 3, not using it, and selling it at a low price. Method 1 is to make low-performance products, the performance of raw materials cannot be fully utilized, and the waste is serious; in method 2, the matching ratio cannot exceed 20%, and more than 20% of raw materials need to be downgraded for use, and there are special requirements for the original performance, compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/40C04B35/622C04B35/626H01F1/11
CPCC04B35/2633C04B35/2641C04B35/2666C04B35/622C04B35/62675C04B2235/3208C04B2235/3227C04B2235/3275C04B2235/3298C04B2235/3418C04B2235/608C04B2235/656C04B2235/77H01F1/11
Inventor 姚志胜
Owner ANHUI SINOMAG TECH
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