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ndfeb waste disposal

  • Researchers use ionic liquids for recycling bonded NdFeB

    Apr 16 2020 · Researchers in Europe have demonstrated the use of ionic liquids for recycling bonded NdFeB permanent magnets. An open-access paper on their work is published in the RSC journal Green Chemistry. Permanent NdFeB magnets are of two types sintered and (polymer or resin) bonded magnets. Both types are (partly) built up

  • Demagnetization followed by remagnetization of waste NdFeB

    New recycling process was proposed to reuse the waste NdFeB magnet scrap powder from the manufacturing process of NdFeB magnet and disc from motor of waste washing machine. The feasibility study was carried out to examine demagnetizing followed by remagnetizing the waste NdFeB magnets.

  • REE Recovery from End-of-Life NdFeB Permanent Magnet Scrap

    Sep 20 2016 · A hydrometallurgical process for the recycling of NdFeB magnet waste with focus on the separation of Tb and Dy from Pr and Nd by solvent extraction with PC-88A was recently presented by

  • Restoring and enhancing the coercivity of waste sintered

    Low melting point Pr-Al-Cu alloys were employed in grain boundary diffusion for sintered NdFeB magnets. The coercivity of the 7 7 2 mm magnet was enhanced from

  • CNAMethod for using bulk sintered neodymium

    The invention relates to a method for using bulk sintered neodymium iron boron (NdFeB) machining waste to prepare a high-temperature-stability regenerated sintered NdFeB magnet and belongs to the technical field of magnetic materials. The rare earth terbium hydride nano powder doping technology is used to regenerate the sintered NdFeB machining waste so as to prepare the high-performance

  • CNAMethod for using bulk sintered neodymium

    The invention relates to a method for using bulk sintered neodymium iron boron (NdFeB) machining waste to prepare a high-temperature-stability regenerated sintered NdFeB magnet and belongs to the technical field of magnetic materials. The rare earth terbium hydride nano powder doping technology is used to regenerate the sintered NdFeB machining waste so as to prepare the high-performance

  • Efficient reuse of the waste sintered NdFeB magnet with Dy

    In this paper the efficient recycling method of sintered NdFeB waste was studied. The production process can be greatly simplified by crushing the recovered waste magnet into hundreds of micron-sized magnetic powder and preparing the magnet directly with orientating molding and sintering. The magnetic properties of the magnet prepared by commercial N45 recovered waste can reach Br

  • NeodymiumThe Perfect Storm Part 2Recycling

    Apr 09 2020 · UMC estimates about tons of NdFeB will be available per year from waste hard disk drives derived from US data-centers alone. As recycling infrastructure shifts towards aligning itself with circular economy industrial technology and manufacturing companies like UMC play an instrumental role in shaping it.

  • Hydrometallurgical Treatment of Neodymium Magnet Waste

    Recycling of REEs out of end-of-life products and E-scrap has become an alternative to mining them out of primary ores due to their supply risk in some countries and the development towards circular economies. Neodymium (NdFeB) magnets are of special interest since they are present in various technological waste streams.

  • Selective electrochemical extraction of REEs from NdFeB

    NdFeB magnet waste is one of the important secondary resources from which rare-earth elements (REEs) can be recovered. Herein we present an electrochemical route to selectively extract REEs from the magnet waste at room temperature. First the magnet waste

  • MATERIAL SAFETY DATA SHEETK J Magnetics

    Product Name Sintered Neodymium Iron Boron (NdFeB) Permanent Magnet SECTION 2HAZARDOUS INGREDIENTS Chemical Name Sintered Neodymium Iron Boron (NdFeB) Permanent Magnet Material or Component Weight CAS No. ACGUH TLV (mg/m3) Notes Neodymium 33 Not established Iron 65 10 (oxide)

  • Hydrometallurgical Treatment of Neodymium Magnet Waste

    Recycling of REEs out of end-of-life products and E-scrap has become an alternative to mining them out of primary ores due to their supply risk in some countries and the development towards circular economies. Neodymium (NdFeB) magnets are of special interest since they are present in various technological waste streams.

  • Selective electrochemical extraction of REEs from NdFeB

    NdFeB magnet waste is one of the important secondary resources from which rare-earth elements (REEs) can be recovered. Herein we present an electrochemical route to selectively extract REEs from the magnet waste at room temperature. First the magnet waste

  • About — REEcycle

    Utilizing a patented process REEcycle can recover 15 of the 17 rare earth elements. REEcycle is currently reclaiming neodymium dysprosium praseodymium and terbium from discarded NdFeB magnets found in electronic waste. These elements are extracted in the form of metal organic frameworks (MOFs) which can be easily converted into an oxide.

  • Neodymium Powder International Magnaproducts Inc.

    Waste Disposal Method Store waste in water filled cans. Add powder to water. Store powder under inert atmosphere in non-combustible containers. Treat as a flammable solid. Keep powder away from ignition sources and oxidizers. Use water during machining processes to control sparking of the swarf.

  • Liquid metal extraction of Nd from NdFeB magnet scrap

    Recycling of Rare Earth Magnet Waste by Removing Rare Earth Oxide with Molten Fluoride using molten magnesium (Mg) to remove neodymium (Nd) from NdFeB magnet scrap by diffusion. Mg was melted over pieces of NdFeB scrap and held at temperatures in the range 675–705 °C for 2–8 h. Journal of Material Cycles and Waste Management Vol

  • Liquid metal extraction of Nd from NdFeB magnet scrap

    Recycling of Rare Earth Magnet Waste by Removing Rare Earth Oxide with Molten Fluoride using molten magnesium (Mg) to remove neodymium (Nd) from NdFeB magnet scrap by diffusion. Mg was melted over pieces of NdFeB scrap and held at temperatures in the range 675–705 °C for 2–8 h. Journal of Material Cycles and Waste Management Vol

  • Progress in Recycling of Sintered NdFeB Magnet Wastes

    Significant efforts have been put into the recycling of bulk sintered NdFeB magnet wastes around the world in the past decade because bulk Nd–Fe–B sintered magnet wastes are valuable secondary

  • Sintered Neodymium Iron Boron (NdFeB) Permanent Magnet

    Sintered Neodymium Iron Boron (NdFeB) Permanent Magnet Sintered Neodymium Iron Boron (NdFeB) Permanent Magnet. Sintered Neodymium Iron Boron (NdFeB) Permanent Magnet. PDF version Waste Disposal Method Dispose of in accordance with federal state and local regulations. Section 8

  • Hydrometallurgical Treatment of Neodymium Magnet Waste

    Neodymium (NdFeB) magnets are of special interest since they are present in various technological waste streams. They contain considerable amounts of REEs such as Nd Dy Pr and some others for example Gd and Tb depending on the specific application making them very attractive for REE-recycling.

  • Addressing Criticality in Rare Earth Elements via

    Journal of Material Cycles and Waste Management Vol. 17 Issue 3 DOI 10.1007/s Possible methods of recycling NdFeB-type sintered magnets using the HD/degassing process journal

  • REE Recovery from End-of-Life NdFeB Permanent Magnet Scrap

    Sep 20 2016 · A hydrometallurgical process for the recycling of NdFeB magnet waste with focus on the separation of Tb and Dy from Pr and Nd by solvent extraction with PC-88A was recently presented by a group in Germany . Results from tests in a laboratory size mixer–settler plant showed that twelve stages are necessary for nearly complete separation (4 N

  • Global Rare Earth In‐Use Stocks in NdFeB Permanent Magnets

    Jul 27 2011 · M. Zakotnik C.O. Tudor Commercial-scale recycling of NdFeB-type magnets with grain boundary modification yields products with designer properties that exceed those of starting materials Waste Management 10.1016/j.wasman.2015.07.041 44 (48-54) (2015).

  • Recycling of bonded NdFeB permanent magnets using ionic

    Recycling of bonded NdFeB permanent magnets using ionic liquids†. Mehmet Ali Recai Önal a Sven Dewilde a Malik Degri b Lydia Pickering b Boris Saje c Sofía Riaño a Allan Walton b and Koen Binnemans a a KU Leuven Department of Chemistry Celestijnenlaan 200F P. O. Box 2404 B-3001 Leuven Belgium.

  • Recycled permanent magnets provide a source for rare earth

    The complete closed-loop permanent magnet recycling process from rare earth-containing waste to new product in the form of a rare earth permanent magnet has been demonstrated at pilot scale. "This opens up the possibility of securing an important value chain in Europe giving a promising opportunity to rare earth recycling businesses

  • Demagnetization followed by remagnetization of waste NdFeB

    New recycling process was proposed to reuse the waste NdFeB magnet scrap powder from the manufacturing process of NdFeB magnet and disc from motor of waste washing machine. The feasibility study was carried out to examine demagnetizing followed by remagnetizing the waste NdFeB magnets.

  • MATERIAL SAFETY DATA SHEET

    Waste disposal method • Dispose in accordance with federal state and local regulations. Precautions to be taken in Handling and Storing • Powders may ignite and burn. Storage in water may generate hydrogen gas. Other precautions • Use water during machining processes to control sparking. ACCIDENTAL RELEASE MEASURES Avoid skin injuries.

  • Recycling of Rare-Earth MagnetsFraunhofer Materials

    In particular only few promising approaches exist for the processing of old magnets and magnet waste that on the one hand exploit the full potential of the already separated rare earth elements they contain and on the other are able to remove unwanted impurities (e. g. oxide organic compounds).

  • REE Recovery from End-of-Life NdFeB Permanent Magnet Scrap

    Sep 20 2016 · A hydrometallurgical process for the recycling of NdFeB magnet waste with focus on the separation of Tb and Dy from Pr and Nd by solvent extraction with PC-88A was recently presented by a group in Germany . Results from tests in a laboratory size mixer–settler plant showed that twelve stages are necessary for nearly complete separation (4 N

  • Recycling of Nd-Fe-B Magnets from Scrap Hard Disc Drives

    A hydrogen-based treatment including Hydrogen Decrepitation (HD) and Hydrogen Disproportionation-Desorption-Recombination (HDDR) was used as part of a recycling procedure for scrap neodymium-iron-boron magnets. Chemical methods of removing nickel coating out of magnets were tested however ineffectively. Powders were obtained from magnets after the HD and were further processed by the

  • Recycling of Neodymium and Dysprosium from Permanent

    Apr 12 2016 · Recycling of Neodymium and Dysprosium from Permanent Magnets Abstract This project seeks to recycle neodymium and dysprosium from used neodymium-iron-boron NdFeB permanent magnets. Our alternative recycling strategy is based on a method developed by Dr. Eric Schelter of the University of Pennsylvania Department of Chemistry and his research

  • Hydrometallurgical Treatment of Neodymium Magnet Waste

    Hydrometallurgical recovery of REEs from NdFeB waste currently mostly performed on a research level is an attractive way of recycling since it is efficient and high purity fractions can be achieved. This method is also not as energy intensive as the pyrometallurgical methods 3 4 14-17 .

  • Recycling of Nd-FeB magnets by hydrogen processing

    Corpus ID . Recycling of Nd-FeB magnets by hydrogen processing and re-sintering inproceedings Herraiz2016RecyclingON title= Recycling of Nd-FeB magnets by hydrogen processing and re-sintering author= E. Herraiz and M. Degri and A. Bradshaw and R. Sheridan and V. S. Mann and I. Harris and A. and Lixandru and I. Poenaru and K. Guth and R. Gauss and O. Gutfleisch and A.

  • Recycling of Rare-Earth MagnetsFraunhofer Materials

    In particular only few promising approaches exist for the processing of old magnets and magnet waste that on the one hand exploit the full potential of the already separated rare earth elements they contain and on the other are able to remove unwanted impurities (e. g. oxide organic compounds).

  • Material Flow Analysis of NdFeB Magnets for Denmark A

    Neodymium–iron–boron (NdFeB) magnets have become highly desirable for modern hi-tech applications. These magnets in general contain two key rare earth elements (REEs) i.e. neodymium (Nd) and dysprosium (Dy) which are responsible for the very high strength of these magnets allowing for considerable size and weight reduction in modern applications. This study aims to explore the

  • Why critical materials are exactly thatNew Statesman

    Workers at the University of Birmingham are currently scaling up recycling technologies to recover NdFeB magnets from electronic and automotive waste." By developing secondary sources of critical materials and by investing in ethical primary resources this can help mitigate the often serious social and environmental costs of mining in many

  • MATERIAL SAFETY DATA SHEET

    Waste disposal method • Dispose in accordance with federal state and local regulations. Precautions to be taken in Handling and Storing • Powders may ignite and burn. Storage in water may generate hydrogen gas. Other precautions • Use water during machining processes to control sparking. ACCIDENTAL RELEASE MEASURES Avoid skin injuries.