GB201201215D0 - Magnet recovery - Google Patents
Magnet recoveryInfo
- Publication number
- GB201201215D0 GB201201215D0 GB201201215A GB201201215A GB201201215D0 GB 201201215 D0 GB201201215 D0 GB 201201215D0 GB 201201215 A GB201201215 A GB 201201215A GB 201201215 A GB201201215 A GB 201201215A GB 201201215 D0 GB201201215 D0 GB 201201215D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- rare earth
- assembly
- magnet
- earth magnets
- hydrogen gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0573—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes obtained by reduction or by hydrogen decrepitation or embrittlement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/023—Hydrogen absorption
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B59/00—Obtaining rare earth metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
- C22B7/002—Dry processes by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding)
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/0553—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 obtained by reduction or by hydrogen decrepitation or embrittlement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F2009/001—Making metallic powder or suspensions thereof from scrap particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Hard Magnetic Materials (AREA)
Abstract
A method, or portable apparatus, suitable for removing one or more rare earth magnets 14 from an assembly 10, comprises: exposing at least one or more selected rare earth magnets 18 to hydrogen gas, whilst in situ within an assembly 10, such that hydrogen decrepitation occurs. The decrepitation process causes the selected rare earth magnets 18 to disintegrate into a particulate form 40 which may be attracted to a magnet 38 such that it can be removed from the remaining assembly 10. This process may be used to remove faulty or damaged rare earth magnets 18 from assembly arrangements 10 for various devices such as motor or generator arrangements. The recovered rare earth particulate 40 may be reused to form new rare earth magnets. The portable apparatus may include a reaction cell 22 which may be releasably attached to a surface of the magnet 18 and/or assembly 10 to enclose a surface of a selected rare earth magnet 18 and a hydrogen gas control system 24, 26 is connectable to the reaction cell 22. The surface of a selected magnet 18 may be scored to aid the process.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB201101201A GB201101201D0 (en) | 2011-01-24 | 2011-01-24 | Magnet recovery method |
Publications (2)
Publication Number | Publication Date |
---|---|
GB201201215D0 true GB201201215D0 (en) | 2012-03-07 |
GB2487656A GB2487656A (en) | 2012-08-01 |
Family
ID=43769533
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB201101201A Ceased GB201101201D0 (en) | 2011-01-24 | 2011-01-24 | Magnet recovery method |
GB1201215.9A Withdrawn GB2487656A (en) | 2011-01-24 | 2012-01-24 | Magnet removal using hydrogen decrepitation |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB201101201A Ceased GB201101201D0 (en) | 2011-01-24 | 2011-01-24 | Magnet recovery method |
Country Status (2)
Country | Link |
---|---|
GB (2) | GB201101201D0 (en) |
WO (1) | WO2012101398A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012014849A1 (en) * | 2012-07-27 | 2014-01-30 | Westfälische Hochschule Gelsenkirchen, Bocholt, Recklinghausen | Process for the separation of permanent magnets from a scrap mixture |
DE102013205408A1 (en) * | 2013-03-27 | 2014-10-16 | Siemens Aktiengesellschaft | A method of separating rare earth metal particles from a mixture containing rare earth metals |
EP3790029A1 (en) | 2013-06-17 | 2021-03-10 | Urban Mining Technology Company, LLC | Magnet recycling to create nd-fe-b magnets with improved or restored magnetic performance |
CN103551563B (en) * | 2013-10-11 | 2016-02-17 | 南通万宝磁石制造有限公司 | A kind of regeneration method of rare earth permanent-magnetic material |
US9336932B1 (en) | 2014-08-15 | 2016-05-10 | Urban Mining Company | Grain boundary engineering |
CN104827041B (en) * | 2015-04-23 | 2016-09-14 | 合肥工业大学 | A kind of method and apparatus peeling off the waste and old surface of Nd-Fe-B permanent magnet coat of metal |
US10643776B2 (en) * | 2015-11-06 | 2020-05-05 | Ut-Battelle, Llc | System and method for the recycling of rare earth magnets |
JP7108545B2 (en) | 2016-01-28 | 2022-07-28 | ノヴェオン マグネティックス,インク. | Grain boundary engineering of sintered magnetic alloys and compositions derived therefrom |
DE102016007038A1 (en) * | 2016-06-08 | 2017-12-14 | Audi Ag | Method for recycling at least one magnet of an electrical machine |
DE102016216355A1 (en) | 2016-08-30 | 2018-03-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for recycling permanent magnets by melting and rapid solidification |
DE102016216353A1 (en) | 2016-08-30 | 2018-03-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Recycling process for the production of isotropic, magnetic powders |
US11611266B2 (en) | 2018-12-18 | 2023-03-21 | Ut-Battelle, Llc | Automated recovery of rare earth permanent magnets from electric machines |
US11230752B2 (en) | 2019-02-25 | 2022-01-25 | Ut-Battelle, Llc | Hard disk drive dismantlement for critical material recovery |
US10860009B1 (en) | 2019-05-18 | 2020-12-08 | Jack Harper | Apparatus for dismantling a plurality of hard disk drives |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5143560A (en) * | 1990-04-20 | 1992-09-01 | Hitachi Metals, Inc., Ltd. | Method for forming Fe-B-R-T alloy powder by hydrogen decrepitation of die-upset billets |
US5091020A (en) * | 1990-11-20 | 1992-02-25 | Crucible Materials Corporation | Method and particle mixture for making rare earth element, iron and boron permanent sintered magnets |
US5354040A (en) * | 1991-11-28 | 1994-10-11 | Mitsubishi Materials Corporation | Apparatus for closed cycle hydrogenation recovery and rehydrogenation |
DE19843883C1 (en) * | 1998-09-24 | 1999-10-07 | Vacuumschmelze Gmbh | Method for recycling of permanent magnets forming part of scrap material |
WO2002075305A1 (en) * | 2001-03-16 | 2002-09-26 | Showa Denko K.K. | Quality testing method and production method of rare earth magnet alloy ingot, the rare earth magnet alloy ingot, and rare earth magnet alloy |
KR100516512B1 (en) * | 2003-10-15 | 2005-09-26 | 자화전자 주식회사 | The making method of high coercive micro-structured powder for bonded magnets and The magnet powder thereof |
JP2012062532A (en) * | 2010-09-16 | 2012-03-29 | Mitsubishi Materials Corp | Collection method of rare earth alloy powder from used product |
-
2011
- 2011-01-24 GB GB201101201A patent/GB201101201D0/en not_active Ceased
-
2012
- 2012-01-24 GB GB1201215.9A patent/GB2487656A/en not_active Withdrawn
- 2012-01-24 WO PCT/GB2012/000063 patent/WO2012101398A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
GB201101201D0 (en) | 2011-03-09 |
GB2487656A (en) | 2012-08-01 |
WO2012101398A8 (en) | 2012-09-07 |
WO2012101398A1 (en) | 2012-08-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |