A kind of AlNiCo permanent magnet alloy scrap recycling method

A permanent magnet alloy and waste recycling technology, applied in the field of permanent magnet alloy, can solve problems such as environmental pollution, waste of resources, occupation of space resources, land resources, etc., and achieve the effects of reducing production costs, reducing pollution, and saving space resources

Active Publication Date: 2020-02-11
HANGZHOU HS MAGNETICS CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Alnico permanent magnet alloys will produce waste materials in the process of production and use. Whether these waste materials are directly discarded or piled up for storage, they will occupy space resources and land resources, which will not only pollute the environment, but also cause waste of resources.
In the prior art, the Chinese patent with the authorized notification number CN103979946B discloses a method for recycling soft ferrite waste, including batching, modification and sintering of raw materials, but this method is only applicable to soft ferrite

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a method for recycling AlNiCo permanent magnet alloy waste, comprising the following steps:

[0032]Step 1: Classify the AlNiCo permanent magnet alloy scraps according to the grades, weigh 25kg of five types of AlNiCo permanent magnet alloy scraps and 40kg of three types of AlNiCo permanent magnet alloy scraps, and add 0.48kg of aluminum, 3.51kg of 2.08kg of nickel, 2.08kg of copper and 2.23kg of iron are used together as raw materials for the new alnico permanent magnet alloy.

[0033] Step 2: Immerse the AlNiCo permanent magnet alloy scrap in metal cleaning solution heated to 51±1°C, ultrasonically clean it for 8 minutes, and dry the scrap.

[0034] Step 3: Pour the sand material into an iron mold and press it into shape, and bake it at 200°C for 80 minutes to make a sand mold; melt the weighed alnico permanent magnet waste and new material together, and the melting temperature is 1450°C, after all the raw materials are melted, stir evenly, p...

Embodiment 2

[0041] The difference between the present embodiment and the first embodiment mainly lies in that the recycling of AlNiCo permanent magnet alloy waste comprises the following steps:

[0042] Step 1: Classify the AlNiCo permanent magnet alloy scraps according to the grades, weigh 32kg of the five types of AlNiCo permanent magnet alloy return materials and 25kg of the five types of AlNiCo permanent magnet alloy scraps, and add 0.58kg of aluminum, 1.35 kg of cobalt, 0.18kg of silicon and 2.69kg of iron are used together as raw materials for new alnico permanent magnet alloys.

[0043] Step 2: Immerse the AlNiCo permanent magnet alloy scrap in metal cleaning solution heated to 59±1°C, ultrasonically clean it for 3 minutes, and dry the scrap.

[0044] Step 3: Pour the sand material into an iron mold and press it into shape, and bake it at 205°C for 60 minutes to make a sand mold; melt the weighed alnico permanent magnet waste and new material together, and the melting temperature i...

Embodiment 3

[0051] The difference between the present embodiment and the first embodiment mainly lies in that the recycling of AlNiCo permanent magnet alloy waste comprises the following steps:

[0052] Step 1: Classify the AlNiCo permanent magnet alloy scraps according to the grades, weigh 16kg of five types of AlNiCo permanent magnet alloy scraps and 25.6kg of three types of AlNiCo permanent magnet alloy scraps, and add 0.13kg of aluminum, 1.46 kg of nickel, 0.82kg of copper and 0.97kg of iron are used together as raw materials for the new alnico permanent magnet alloy.

[0053] Step 2: immerse the AlNiCo permanent magnet alloy waste in a metal cleaning solution heated to 55±1°C, ultrasonically clean it for 5 minutes, and dry the waste.

[0054] Step 3: Pour the sand material into an iron mold and press it into shape, and bake it at 203°C for 70 minutes to make a sand mold; melt the weighed alnico permanent magnet waste and new material together, and the melting temperature is 1550°C, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for recovering and reusing an aluminum nickel cobalt permanent magnet alloy waste material, and belongs to the technical field of permanent magnet alloys. According to the adopted technical scheme, the method for recovering and reusing the aluminum nickel cobalt permanent magnet alloy waste material comprises the steps that the aluminum nickel cobalt permanent magnet alloy waste material is pretreated and matched with a new material, the waste material and the new material are smelted together, smelted molten metal is poured in a sand mold for cooling forming,a formed casting is subjected to sand removal, pre-machining, solid solution heat treatment, cooling, tempering heat treatment and finish machining, and thus the finished casting is obtained. The method has the effects of low production cost, high product pass rate and good magnetic performance.

Description

technical field [0001] The invention relates to the technical field of permanent magnet alloys, in particular to a method for recycling AlNiCo permanent magnet alloy waste. Background technique [0002] Permanent magnet materials, also known as hard magnetic materials, refer to materials that can maintain constant magnetism once magnetized. Commonly used permanent magnet materials include alnico permanent magnet alloy, iron chromium cobalt permanent magnet alloy, permanent ferrite, rare earth permanent magnet materials and composite permanent magnet materials, etc. Alnico material is a permanent magnet material mainly mixed with aluminum, nickel and cobalt in addition to iron. It occupies an important position in the application of permanent magnet materials. It has the advantages of high residual magnetization and low temperature coefficient, and can be widely used in various fields. Various instruments and meters and other high-temperature-resistant fields, but Alnico per...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C23G1/24C22B23/02C22B21/00C22C1/03
CPCC22B7/003C22B21/0069C22B23/02C22C1/03C23G1/24Y02P10/20
Inventor 李根先郑岳文
Owner HANGZHOU HS MAGNETICS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap