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   Articles with "ndfeb magnets" as a keyword



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Evaluation of Neodymium and Praseodymium Leaching Efficiency from Post-consumer NdFeB Magnets

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recommendations! Published in 2018 at "Journal of Sustainable Metallurgy"

DOI: 10.1007/s40831-018-0180-6

Abstract: Rare earth elements (REE) are among the Critical Raw Materials classified by the European Commission due to unbalanced supply and demand. Neodymium and praseodymium belong to the REE group that plays a significant role in… read more here.

Keywords: leaching efficiency; ndfeb magnets; evaluation neodymium; praseodymium ... See more keywords
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Recycling of NdFeB magnets using nitration, calcination and water leaching for REE recovery

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recommendations! Published in 2017 at "Hydrometallurgy"

DOI: 10.1016/j.hydromet.2016.11.006

Abstract: Abstract NdFeB magnets currently dominate the magnet market. Supply risks of certain rare earth elements (REE), e.g. Nd and Dy, demand efficient recycling options that are applicable to different types and compositions with minimum use… read more here.

Keywords: ndfeb magnets; water leaching; calcination water; recycling ndfeb ... See more keywords
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Alkali baking and solvometallurgical leaching of NdFeB magnets

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recommendations! Published in 2020 at "Hydrometallurgy"

DOI: 10.1016/j.hydromet.2019.105213

Abstract: Abstract End-of-life NdFeB magnets are an important secondary source of rare-earth elements (REEs) and cobalt. Recycling of these magnets can also mitigate the supply problems of its constituent critical REEs (mainly neodymium and dysprosium). The… read more here.

Keywords: alkali baking; leaching ndfeb; ndfeb magnets; solvometallurgical leaching ... See more keywords
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Selective and efficient extraction of Nd from NdFeB magnets via ionization in LiCl-KCl-CdCl2 melt

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recommendations! Published in 2021 at "Journal of Alloys and Compounds"

DOI: 10.1016/j.jallcom.2020.158424

Abstract: Abstract The growing popularity of NdFeB magnets has created a demand for sustainable Nd recycling processes with fewer byproducts and higher extraction efficiencies. To address this need, we herein studied the extraction of Nd from… read more here.

Keywords: extraction; licl kcl; ndfeb magnets; cdcl2 ... See more keywords
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A product classification approach to optimize circularity of critical resources – the case of NdFeB magnets

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recommendations! Published in 2019 at "Journal of Cleaner Production"

DOI: 10.1016/j.jclepro.2019.05.048

Abstract: Abstract The circular economy concept and critical resources have recently received significant momentum across the board. However, only little work is done so far to assess the role of circular economy strategies in reducing a… read more here.

Keywords: circularity; critical resources; resource; approach ... See more keywords

Microstructure improvement related coercivity enhancement for sintered NdFeB magnets after optimized additional heat treatment

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recommendations! Published in 2018 at "Journal of Rare Earths"

DOI: 10.1016/j.jre.2017.11.007

Abstract: Abstract The microstructure, especially the Nd-rich phase and the grain boundary, in sintered NdFeB magnets plays an important role in magnetic reversal and coercivity mechanism. To better understand the effects of the microstructure on the… read more here.

Keywords: ndfeb magnets; enhancement; coercivity; optimized additional ... See more keywords
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One-step recovery of REE oxalates in electro-leaching of spent NdFeB magnets

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recommendations! Published in 2020 at "Separation and Purification Technology"

DOI: 10.1016/j.seppur.2020.117362

Abstract: Abstract Recovery of rare-earth elements (REEs) from spent NdFeB magnets is receiving great attention because of high amount of neodymium and potential risk of environmental pollution. In this study, a novel environment-friendly hydrometallurgical route is… read more here.

Keywords: recovery; spent ndfeb; ndfeb magnets; ree ... See more keywords
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Recycling of NdFeB magnets employing oxidation, selective leaching, and iron precipitation in an autoclave

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recommendations! Published in 2023 at "RSC Advances"

DOI: 10.1039/d2ra06883d

Abstract: The increasing production of neodymium–iron–boron (NdFeB) magnets for technological applications results in disposal problems. NdFeB magnets contain a significant quantity of rare earth elements (REEs). China is the largest REEs producer, but it applies quotas… read more here.

Keywords: oxidation; recycling ndfeb; selective leaching; iron ... See more keywords
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Clarifying the effects of La and Ce in the grain boundary diffusion sources on sintered NdFeB magnets

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recommendations! Published in 2019 at "Materials Research Express"

DOI: 10.1088/2053-1591/ab3756

Abstract: (La,Ce)–Al–Cu alloys with different La/Ce ratios were employed as the diffusion sources for grain boundary diffusion of sintered NdFeB magnets. The coercivity changed from 990 kA m−1 to 984, 1021 and 1031 kA m−1 after… read more here.

Keywords: boundary diffusion; grain boundary; sintered ndfeb; diffusion ... See more keywords