Viable Scandium Extraction from Bauxite Residue at Pilot Scale

Scandium extraction from the Greek bauxite residue has been demonstrated at an industrial pilot plant at MYTILINEOS. This work comes as the result of the H2020 SCALE collaborative research project. By combining sulfuric acid leaching and II-VI Selective-Ion Recovery (SIR) technology, a 22 wt% Sc con...

Full description

Saved in:
Bibliographic Details
Published inMaterials Proceedings Vol. 5; no. 1; p. 129
Main Authors Panagiotis Davris, Efthymios Balomenos, Ghazaleh Nazari, Gomer Abrenica, Shailesh Patkar, Wen-Qing Xu, Yiannis Karnachoritis
Format Journal Article
LanguageEnglish
Published MDPI AG 01.04.2022
Subjects
Bauxite Residue
ion-exchange
leaching
Scandium
Online AccessGet full text

Cover

More Information
Summary:Scandium extraction from the Greek bauxite residue has been demonstrated at an industrial pilot plant at MYTILINEOS. This work comes as the result of the H2020 SCALE collaborative research project. By combining sulfuric acid leaching and II-VI Selective-Ion Recovery (SIR) technology, a 22 wt% Sc concentrate has been produced from the Greek Bauxite Residue that contains 70–100 mg/kg Sc. As detailed in this work, the year-long pilot campaign achieved low acid consumption, high Sc selectivity over Fe and Ti and high Sc-loading capacity of the SIR resin, setting the basis for a viable Sc extraction technology from bauxite residue. Furthermore, the neutralized bauxite residue from the leaching process can be used in cement production, enhancing the sustainability of the operation.
ISSN:2673-4605
DOI:10.3390/materproc2021005129