University of Oulu

Lemougna, P. N., Yliniemi, J., Adediran, A., Luukkonen, T., Tanskanen, P., Finnilä, M., & Illikainen, M. (2021). Synthesis and characterization of porous ceramics from spodumene tailings and waste glass wool. In Ceramics International (Vol. 47, Issue 23, pp. 33286–33297). Elsevier BV.

Synthesis and characterization of porous ceramics from spodumene tailings and waste glass wool

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Author: Lemougna, Patrick N.1,2,3; Yliniemi, Juho1; Adediran, Adeolu1;
Organizations: 1Faculty of Technology, Fibre and Particle Engineering Research Unit, PO Box 4300, 90014, University of Oulu, Finland
2Department of Materials and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium
3Department of Minerals Engineering, School of Chemical Engineering and Mineral Industries (EGCIM), University of Ngaoundere, P.O. Box 454, Ngaoundere, Cameroon
4Process Metallurgy Research Unit, PO Box 4300, 90014, University of Oulu, Finland
5Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Aapistie 5 A, Oulu, 90220, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 22.6 MB)
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Language: English
Published: Elsevier, 2021
Publish Date: 2021-09-13


Glass wool waste remains a challenging waste fraction with relatively little utilization prospects. The present study investigated the development of porous ceramic materials from glass wool waste and spodumene tailings mainly made of quartz feldspar sand (QFS), with 0.05–0.5% silica carbide (SiC) as a pore-forming agent. The formulated compositions were sintered at 950 °C and analyzed in terms of mechanical properties, phase composition, and microstructure using X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray micro-computed tomography. The results showed that a synergetic effect of glass wool and SiC started to be significant from 15 wt% glass wool and 0.05 wt% SiC, the strength reducing and the porosity increasing with the increase of SiC. The porous ceramics were largely amorphous, with compressive strength ranging from 5 to 30 MPa while the water absorption and apparent density ranged from 2 to 10% and 0.7–1.2 g/cm³, respectively. The total porosity varied between 20 and 75%, and the wall thickness between 62 and 68 μm; besides, most of the prepared materials floated in water. These results are of interest for the repurposing of glass wool waste in the development of non-flammable lightweight materials for potential filtering or high-rise building applications.

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Series: Ceramics international
ISSN: 0272-8842
ISSN-E: 1873-3956
ISSN-L: 0272-8842
Volume: 47
Issue: 23
Pages: 33286 - 33297
DOI: 10.1016/j.ceramint.2021.08.231
Type of Publication: A1 Journal article – refereed
Field of Science: 215 Chemical engineering
216 Materials engineering
Funding: This work was supported by the Fibre and Particle Engineering Research Unit. Adeolu Adediran has received funding from K.H. Renlund Foundation and Ahti Pekkala Foundation for his doctoral research. Tero Luukkonen and Juho Yliniemi have received funding from the Academy of Finland (grant # 326291 and # 322786, respectively). Part of the work was carried out with the support of the Centre for Material Analysis, University of Oulu, Finland.
Academy of Finland Grant Number: 326291
Detailed Information: 326291 (Academy of Finland Funding decision)
322786 (Academy of Finland Funding decision)
Copyright information: © 2021 The Authors. Published by Elsevier Ltd. Under a Creative Commons license CC BY 4.0.