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Recovery of scandium by crystallization techniques
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Resource recovery.ORCID iD: 0000-0002-9307-197X
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Resource recovery.ORCID iD: 0000-0002-3239-5188
2018 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Bauxite residues, so called red mud, can be processed to recover various valuable end products, whilst reducing the environmental impact of the waste. Scandium is one of the valuable elements in bauxite residues. It is possible to extract and enrich scandium from red mud by leaching and solvent extraction. Scandium can then be recovered from the pregnant strip liquor by crystallisation. Different crystallisation techniques can be used to generate the supersaturation required for scandium to crystallise out as a salt. In the present work, the crystallisation of an ammonium scandium fluoride phase by cooling and anti-solvent crystallisation techniques is presented with respect to crystal quality (purity, size and morphology) and yield. 

Place, publisher, year, edition, pages
2018.
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-237444OAI: oai:DiVA.org:kth-237444DiVA, id: diva2:1259119
Conference
2nd edition of the Bauxite Residue Valorisation and best practices conference, Athens, 7- 10 May
Note

QC 20191031

Available from: 2018-10-27 Created: 2018-10-27 Last updated: 2019-10-31Bibliographically approved

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