한국생산제조학회 학술지 영문 홈페이지

Current Issue

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 31 , No. 4

[ Papers ]
Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 31, No. 4, pp. 233-239
Abbreviation: J. Korean Soc. Manuf. Technol. Eng.
ISSN: 2508-5107 (Online)
Print publication date 15 Aug 2022
Received 17 May 2022 Revised 04 Jul 2022 Accepted 11 Jul 2022
DOI: https://doi.org/10.7735/ksmte.2022.31.4.233

NdFeB계 희토류 자석 스크랩에서 에멀젼 플로우 공법을 이용한 중희토류의 용매추출 공정 연구
김병준a ; 김용성b, *

Study on the Solvent Extraction Process of Heavy Rare Earth Using Emulsion Flow Method from NdFeB Based Rare Earth Magnet Scrap
Byeong Jun Kima ; Young Sung Kimb, *
aGraduate School of NIDE Fusing Technology, Seoul National University of Science & Technology
bSeoul Tech NDT Research Center, Seoul National University of Science & Technology
Correspondence to : *Tel.: +82-2-970-6804 E-mail address: youngsk@seoultech.ac.kr (Young Sung Kim).

Funding Information ▼

Abstract

In this study, emulsion flow equipment was newly manufactured by modifying the shape of the oil phase nozzle and the filter pore size. An experiment to find the optimal conditions for separating Nd and Dy in the chlorinated rare earth aqueous solution recovered from the dissolution process of the spent Nd magnet was performed with this equipment. The emulsion filling rate was the highest at 100% when the nozzle for spraying oil phase inside the cylinder was type B with a jaw height of 5 mm above the filter and the filter pore size was 40 to 100 μm (P2). Therefore, it was confirmed that these are the most optimal emulsion process conditions in the nozzle when separating Nd and Dy by the emulsion flow method.


Keywords: Solvent extraction, Emulsion flow, NdFeB magnet, Rare earth, Separating

Acknowledgments

이 논문은 2022년도 에너지기술개발사업 과제번호 20205210100070의 연구비지원으로 수행되었습니다.


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Byeong Jun Kim

Master Candidate in the Graduate School of NIDE Fusing Technology, Seoul National University of Science and Technology. His research interest is Material and Nano-Micro Technology.

E-mail: kbj1020@seoultech.ac.kr

Young Sung Kim

Professor in the NDT Research Center, Seoul National University of Science and Technology. His research interest in Material and Nano-Micro Technology.

E-mail: youngsk@seoultech.ac.kr