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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 31 , No. 5

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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 31, No. 5, pp. 324-329
Abbreviation: J. Korean Soc. Manuf. Technol. Eng.
ISSN: 2508-5107 (Online)
Print publication date 15 Oct 2022
Received 19 Aug 2022 Revised 02 Sep 2022 Accepted 06 Sep 2022
DOI: https://doi.org/10.7735/ksmte.2022.31.5.324
연속식 에멀젼 플로우 공법을 이용한 희토류의 용매추출 공정 연구
김병준^a ; 김용성^b^{, *}


A Study on the Solvent Extraction Process of Rare Earth using the Continuous Emulsion Flow Method
Byeong Jun Kim^a ; Young Sung Kim^b^{, *}
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.: +82-2-970-6952 E-mail address: youngsk@seoultech.ac.kr (Young Sung Kim).

Abstract

In this study, solvent extraction was performed by fabricating a continuous emulsion flow device. To confirm the optimal separation conditions of light rare earth and Dy in the chlorinated rare earth aqueous solution obtained in the recovery process of the waste Nd magnet, an experiment was conducted with this equipment by varying the flow rate ratio of the aqueous and organic phases. As the aqueous solution flow rate ratio increased, the extraction rate and separation coefficient of rare earths decreased. The optimal separation conditions were the highest with a flow rate ratio of O/A = 10/1, Dy extraction rate of 96%, and separation coefficient of 116.


Keywords: Solvent extraction, Emulsion flow, Rare earth, NdFeB magnet, Continuous process

Acknowledgments

이 연구는 2022년도 에너지기술개발사업 과제번호 20205210100070의 연구비 지원으로 수행되었습니다.

References


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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