Neodymium as the main feature of permanent magnets from hard disk drives (HDDs).

摘要: Abstract As a way to manage neodymium–iron–boron (NdFeB) magnets wasted in end-of-life hard disk drives (HDDs), waste characterization is needed prior recycling process. Due their magnetic properties, NdFeB are essential technological applications nowadays, thus causing an increase the industrial demand for rare earth metals. However, these metals have short supply, since they difficult obtain from ores, creating critical market. In this work, study of sintered was undertaken by qualitatively and quantitatively uncovering neodymium recovery potential type electronic waste. From collection disassembly drives, which magnet represents less than 3% total weight, efficient demagnetization process proceeded at 320 °C. Then, ground screened X-ray diffraction (XRD) analysis, showed Nd 2 Fe 14 B tetragonal phase as dominant constituent sample. An analysis also carried out scanning electron microscope (SEM) inductively coupled plasma optical emission spectrometer (ICP-OES), where composition 21.5 wt% 65.1 wt% iron, among other chemicals. This content higher one found enhancing recyclability importance management.