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From Recycled Machining Waste to Useful Powders for Metal Additive Manufacturing Read chapter Read first chapter

2019 | OriginalPaper | Chapter

Rare Earth Magnet Recovery from Hard Drives by Preferential Degradation

Authors : Brandon Ott, D. Erik Spiller, Patrick R. Taylor

Published in: REWAS 2019

Publisher: Springer International Publishing

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Abstract

Neodymium recycling by the mineral processing practice of liberation and separation of hard disk drives is envisioned and evaluated. Magnetic material is liberated from the hard drive, constructed mostly of malleable metals, by preferential degradation of the brittle magnet material. The process developed is shown to recover greater than ninety-five percent of the magnet material with a product grade of over 80% magnet material by mass. The process is designed to co-produce stainless steel, aluminum, nickel alloy, carbon steel, and printed circuit board concentrates as contributors to the recycle value of hard drives.

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Literature
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Baba K, Hiroshige Y, Nemoto T (2013) Rare-earth magnet recycling. Hitachi Rev 62(8):452–455
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Bandara H, Darcy J, Apelian D, Emmert M (2014) Value analysis of neodymium content in shredder feed: toward enabling the feasibility of rare earth magnet recycling. Environ Sci Technol 48(12):6553–6560CrossRef
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Walton A, Yi H, Rowson N, Speight J, Mann V, Sheridan R, Bradshaw A, Harris I, Williams A (2015) The use of hydrogen to separate and recycle neodymium–iron–boron-type magnets from electronic waste. J Clean Prod 104:236–241CrossRef
Metadata
Title
Rare Earth Magnet Recovery from Hard Drives by Preferential Degradation
Authors
Brandon Ott
D. Erik Spiller
Patrick R. Taylor
Copyright Year
2019
Book
REWAS 2019

Print ISBN: 978-3-030-10385-9

Electronic ISBN: 978-3-030-10386-6

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-030-10386-6_34

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