[go: up one dir, main page]

GB201101201D0 - Magnet recovery method - Google Patents

Magnet recovery method

Info

Publication number
GB201101201D0
GB201101201D0 GB201101201A GB201101201A GB201101201D0 GB 201101201 D0 GB201101201 D0 GB 201101201D0 GB 201101201 A GB201101201 A GB 201101201A GB 201101201 A GB201101201 A GB 201101201A GB 201101201 D0 GB201101201 D0 GB 201101201D0
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.)
Ceased
Application number
GB201101201A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Birmingham
Original Assignee
University of Birmingham
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by University of Birmingham filed Critical University of Birmingham
Priority to GB201101201A priority Critical patent/GB201101201D0/en
Publication of GB201101201D0 publication Critical patent/GB201101201D0/en
Priority to GB1201215.9A priority patent/GB2487656A/en
Priority to PCT/GB2012/000063 priority patent/WO2012101398A1/en
Ceased legal-status Critical Current

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
    • 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
    • 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
    • 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)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic 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.
GB201101201A 2011-01-24 2011-01-24 Magnet recovery method Ceased GB201101201D0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB201101201A GB201101201D0 (en) 2011-01-24 2011-01-24 Magnet recovery method
GB1201215.9A GB2487656A (en) 2011-01-24 2012-01-24 Magnet removal using hydrogen decrepitation
PCT/GB2012/000063 WO2012101398A1 (en) 2011-01-24 2012-01-24 Magnet recovery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201101201A GB201101201D0 (en) 2011-01-24 2011-01-24 Magnet recovery method

Publications (1)

Publication Number Publication Date
GB201101201D0 true GB201101201D0 (en) 2011-03-09

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 After (1)

Application Number Title Priority Date Filing Date
GB1201215.9A Withdrawn GB2487656A (en) 2011-01-24 2012-01-24 Magnet removal using hydrogen decrepitation

Country Status (2)

Country Link
GB (2) GB201101201D0 (en)
WO (1) WO2012101398A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
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
BR112015031725A2 (en) * 2013-06-17 2017-07-25 Urban Mining Tech Company Llc method for manufacturing a recycled nd-fe-b permanent magnet
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 method and equipment for stripping the metal coating on the surface of waste NdFeB permanent magnets
WO2017079183A1 (en) 2015-11-06 2017-05-11 Ut-Battelle, Llc System and method for the recycling of rare earth magnets
WO2017132075A1 (en) 2016-01-28 2017-08-03 Urban Mining Company Grain boundary engineering of sintered magnetic alloys and the compositions derived therefrom
DE102016007038A1 (en) * 2016-06-08 2017-12-14 Audi Ag Method for recycling at least one magnet of an electrical machine
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
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
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
CN115747611B (en) * 2022-10-13 2023-10-20 包头金山磁材有限公司 Auxiliary alloy cast sheet, high-remanence high-coercivity neodymium-iron-boron permanent magnet and preparation method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
WO2012101398A1 (en) 2012-08-02
GB201201215D0 (en) 2012-03-07
WO2012101398A8 (en) 2012-09-07
GB2487656A (en) 2012-08-01

Similar Documents

Publication Publication Date Title
GB201201215D0 (en) Magnet recovery
MY195976A (en) Process, Method, and System for Removing Heavy Metals From Fluids
MY173411A (en) Method and equipment for selectively collecting process effluent gases
MX2013008580A (en) Method for removing heat stable base salts from a contaminated basic solution, and use thereof in a process for recovering acid gas from an acid gas stream.
WO2012156615A3 (en) Power supply system and method for eliminating the pogo effect
WO2011106750A3 (en) Method and apparatus for enhanced lifetime and performance of ion source in an ion implantation system
WO2012109496A3 (en) Method and apparatus for electrodynamically driving a charged gas or charged particles entrained in a gas
UA111943C2 (en) METHOD AND REACTOR FOR SELECTIVE REMOVAL OF PRODUCTS FROM THE GAS SYSTEM
IN2015DN00430A (en)
MY160908A (en) Integrated process for floating liquefied natural gas pretreatment
EP2615463A4 (en) Apparatus for separating fine particles using magnetophoresis, and method for separating fine particles using same
TW200623260A (en) Methods of removing photoresist on substrates
WO2012135116A3 (en) Process for reducing the concentration of hydrate inhibitors in water used for oil and gas production
IN2014MN02465A (en)
MX2021006665A (en) Process for developing fuel systems.
MY145365A (en) Systems and methods for flow-through treatment of contaminated fluids
UA103607C2 (en) Process for the removal of admixtures and water from bayer method
MX2016004452A (en) Antisense oligonucleotide directed removal of proteolytic cleavage sites, the hchwa-d mutation, and trinucleotide repeat expansions.
GB2444397B (en) Method for removal of mercury from the emissions stream of a power plant and an apparatus for achieving the same
MY193615A (en) Method and control system for gas injection into coolant and nuclear reactor plant
MX2015006557A (en) Method for removal and recovery of organic amines from a hydrocarbon stream.
GB201115914D0 (en) Microwave processing of feedstock
GB2528786A (en) Apparatus and methods for high pressure leaching of polycrystalline diamond cutter elements
MY184265A (en) Method for recovering oil and viscosifying polymers in polymer-flood produced water
PH12015501267A1 (en) Method for producing compatible, transparent water-containing oil, and device for producing compatible, transparent water-containing oil

Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)