Extraction of Rare Earth Elements from Bastnasite Ore and Separation of Heavy REEs and Light REEs by Solvent Extraction
Paper in proceeding, 2025

In this study, rare earth elements in bastnasite ore from Eskişehir, Turkey, were extracted by leaching using EG-FeCl3-based deep eutectic solvent together with the following solvent extraction. Leaching conditions such as temperature, FeCl3 molarity, solid–liquid ratio (S/L), time, and mixing speed were determined using Taguchi orthogonal (L32) method. About 62.704 wt.% of light REEs (La, Ce, Nd, Pr) were dissolved after the calcination of the ore using 1 M of FeCl3 at S/L ratio of 0.05, with 600 rpm of stirring rate for 16 h at 50 °C. Heavy REEs and light REEs were separated by solvent extraction. D2EHPA extracted Y and Th from the leachate sufficiently. The highest distribution ratio for both elements was 17.28 and 8.39, respectively. Following to extraction, 74% of Y has been stripped back to 2 M HNO3 solution.

Green solvents

Deep eutectic solvents (DESs)

Extractive metallurgy

Rare earth elements

Author

S. Samet Kaplan

Istanbul Technical University (ITÜ)

Hitit University

M. Seref Sonmez

Istanbul Technical University (ITÜ)

Martina Petranikova

Chalmers, Chemistry and Chemical Engineering, Energy and Material

Minerals, Metals and Materials Series

23671181 (ISSN) 23671696 (eISSN)

59-66
9783031811814 (ISBN)

TMS 2025
Las Vegas, USA,

Subject Categories (SSIF 2025)

Materials Chemistry

DOI

10.1007/978-3-031-81182-1_7

More information

Latest update

3/24/2025