Improving reactive waste rock valorization potential using mechanical separation
Karine Sylvain, Thomas Pabst, Isabelle Demers
In the proceedings of: GeoSaskatoon 2023: 76th Canadian Geotechnical ConferenceSession: Cover Systems
ABSTRACT: Recent studies have shown, based on laboratory experiments, field testing and numerical modelling, that non-acid generating mine wastes could be reused in reclamation of tailings storage facilities (TSF), therefore allowing for practical applications of circular economy approaches on mine sites. However, the quantities of non-acid generating waste rock on site are often limited. This study evaluated the potential of valorization of potentially acid generating (PAG) waste by controlling its reactivity using sieving. Waste rocks were sampled at three partner mine sites and the physical and chemical properties of 7 different fractions were characterized in the laboratory. A total of 21 column tests were carried for various fractions to assess their geochemical behaviour. Results obtained in this study showed that fine fractions were controlling reactivity. Recommendations regarding material sieving were proposed and are presented and discussed in this paper.
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Sylvain, Karine, Pabst, Thomas, Demers, Isabelle (2023) Improving reactive waste rock valorization potential using mechanical separation in GEO2023. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Sylvain_GEO2023_30,
author = {{Sylvain, Karine}, {Pabst, Thomas}, {Demers, Isabelle}}
title = {Improving reactive waste rock valorization potential using mechanical separation }
booktitle = {Proceedings of the 76th Canadian Geotechnical Conference}
year = {2023}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {Improving reactive waste rock valorization potential using mechanical separation }
booktitle = {Proceedings of the 76th Canadian Geotechnical Conference}
year = {2023}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }