Reach Us +44-7480-022449
Selective Leaching Of Rare Earth Elements From NdFeB Powders Via Alkaline Treatment And Thermal Oxidation | 30076
ISSN: 2161-0525

Journal of Environmental & Analytical Toxicology
Open Access

Like us on:

Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Selective leaching of rare earth elements from NdFeB powders via alkaline treatment and thermal oxidation

World Congress and Expo on Recycling

Kyeong Woo Chung, Chul-Joo Kim and Ho-sung Yoon

ScientificTracks Abstracts: J Environ Anal Toxicol

DOI: 10.4172/2252-5211.S1.002

In this study, a new approach for recovering Rare earth elements(REEs) from NdFeB scraps through the alkaline treatment and leaching was attempted. Alkaline treatment has been traditionally applied for the hydrometallurgical process of monazite ores to convert REEs phosphates to soluble REEs hydroxides. It can be performed at a relatively low temperature around 100oC and an ambient pressure without any special equipment. In addition, REEs hydroxides are easily and quickly dissolved in weakly acidic solution. Therefore, the present work applied alkaline treatment to the recycling process of NdFeB alloys and investigated not only the leaching behavior of the resultant powders but also the separation efficiency of REEs and iron.The alkaline treatment of NdFeB powders in NaOH and the oxidation roasting were performed and the leaching of the resultant powers was carried out in HCl solution. Using this method, high leaching yields of REEs of more than 90% are obtained while the leaching yield of iron is lower than 1%. Therefore, high selective leaching efficiency of more than 80 is obtained.
Kyeong Woo Chung has completed his PhD from Yonsei University and had worked for Hyundai Motors Group. He is the senior researcher of KIGAM. He has published many papers in reputed journals and has been serving as an Editorial Board Member of Journal of Korea Institute of Resource Recycling.
Relevant Topics