Technological and ecological safety in aspect of chemical properties of recycled neodymium magnets – electric motors and hard disk

Author:

Kapustka Katarzyna1,Ziegmann Gerhard1,Klimecka-Tatar Dorota2

Affiliation:

1. University of Technology , Clausthal Centre of Material Technology , Agricolastraße 2, 38678 Clausthal-Zellerfeld , Germany

2. Czestochowa University of Technology , Department of Production Engineering and Safety , Armii Krajowej 19B, 42-200 Czestochowa , Poland

Abstract

Abstract Neodymium magnets currently dominate the magnet market due to their superior magnetic properties with maximum volume minimization. In this paper, the results of X-ray analysis for two types of magnetic powder obtained from the recovered magnets traditionally used in electric motors and hard disk have been presented. The NdFeB magnets are composed of 25-35 wt. % rare earth elements (RE) and the rest being transition metals (mainly Fe.). RE, other than Nd, such Dy, Pr, Tb and Gd or exogen elements, other than Fe, such as Al, Co, Ga, Nb, Si, Cu and Zr can also be present as minor admixtures. This paper brings an opportunity to introduce the hard magnets recycling technology on an industrial scale.

Publisher

Stowarzyszenie Menedzerow Jakosci i Produkcji

Subject

Management of Technology and Innovation,Industrial and Manufacturing Engineering,Safety, Risk, Reliability and Quality,Management Information Systems

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