University of Oulu

Patrick N. Lemougna, Juho Yliniemi, Arnold Ismailov, Erkki Levanen, Pekka Tanskanen, Paivo Kinnunen, Juha Roning, Mirja Illikainen, Recycling lithium mine tailings in the production of low temperature (700–900 °C) ceramics: Effect of ladle slag and sodium compounds on the processing and final properties, Construction and Building Materials, Volume 221, 2019, Pages 332-344, ISSN 0950-0618,

Recycling lithium mine tailings in the production of low temperature (700–900 °C) ceramics : effect of ladle slag and sodium compounds on the processing and final properties

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Author: Lemougna, Patrick N.1; Yliniemi, Juho1; Ismailov, Arnold2;
Organizations: 1Faculty of Technology, Fiber and Particle Engineering Unit, PO Box 4300, 90014 University of Oulu, Finland
2Materials Science, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 599, FI-33101 Tampere, Finland
3Process Metallurgy Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
4InfoTech Oulu, Faculty of Information Technology and Electrical Engineering, Biomimetics and Intelligent Systems Group (BISG), University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2.4 MB)
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Language: English
Published: Elsevier, 2019
Publish Date: 2021-06-18


This paper deals with the valorization of quartz and felspar rich lithium mine tailings (QFS) in the development of construction materials. Ladle slag was used as green strength increasing agent. Sodium hydroxide and carbonate were used as fluxing agents to allow sintering at 700–900 °C. Of these, sodium hydroxide was found to be the more efficient. The sintered ceramics were characterized by X-ray diffraction, scanning electron microscopy, compressive test, water absorption, apparent density and dilatometry; the results were found to comply with ASTM C62–99 specifications for building brick, and interesting for a sustainable use of resources.

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Series: Construction & building materials
ISSN: 0950-0618
ISSN-E: 1879-0526
ISSN-L: 0950-0618
Volume: 221
Pages: 332 - 344
DOI: 10.1016/j.conbuildmat.2019.06.078
Type of Publication: A1 Journal article – refereed
Field of Science: 218 Environmental engineering
216 Materials engineering
212 Civil and construction engineering
Funding: This work was performed under the framework of the “GEOBOT” project, supported by the European Regional Development Fund (ERDF), Pohjois-Pohjanmaa Council of Oulu Region and Vipuvoimaa EU: lta 2014-2020 and companies Boliden Harjavalta Oy, Keliber Oy and Saint-Gobain Finland Oy.
Copyright information: © 2019 Elsevier Ltd. All rights reserved.