Potential of contaminated neutral drainage generation from waste rock at Raglan
Marie-Pier Éthier, Bruno Bussière, Mostafa Benzaazoua, Ronald V. Nicholson, Philippe Garneau
In the proceedings of: GEO2010 Calgary: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost ConferenceSession: T3-C
ABSTRACT: Fresh samples representing seven waste rock types from the Raglan Mine, property of Xstrata Nickel (Quebec, Canada), were tested to investigate their geochemical behaviour. A multidisciplinary characterization and column tests were performed on each rock type. Results from column tests show that all leachate samples remained at near-neutral pH for the entire duration of the tests and that they were not considered to be acid-generating using the oxidation-neutralization curves. Column tests showed that nickel was released at elevated concentrations by at least one rock type. Batch sorption tests showed that sorption phenomena could have a influence on drainage water quality from the rock.
RÉSUMÉ: Une étude du comportement géochimique a été effectuée sur différents échantillons frais représentatifs de sept types de stériles de la Mine Raglan, propriété d'Xstrata Nickel. Une caractérisation pluridisciplinaire et des essais en colonnes ont été effectués sur chaque type de roche. Les résultats des essais en colonne montrent que les pH des lixiviats ont été neutres pour toute la durée du test, et une interprétation utilisant les courbes d'oxydation et de neutralisation a montré qu'ils ne sont pas potentiellement générateurs de drainage minier acide. Les essais en colonnes ont montré que du nickel est lixivié par au moins un type de roche sur sept. Des essais de sorption montrent que ce phémonène pourrait avoir une importance sur l'évolution de la qualité des eaux de drainage provenant de ces roches. 1 INTRODUCTION
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Marie-Pier Éthier; Bruno Bussière; Mostafa Benzaazoua; Ronald V. Nicholson; Philippe Garneau (2010) Potential of contaminated neutral drainage generation from waste rock at Raglan in GEO2010. Ottawa, Ontario: Canadian Geotechnical Society.
@article{GEO2010_150,
author = Marie-Pier Éthier; Bruno Bussière; Mostafa Benzaazoua; Ronald V. Nicholson; Philippe Garneau,
title = Potential of contaminated neutral drainage generation from waste rock at Raglan ,
year = 2010
}
title = Potential of contaminated neutral drainage generation from waste rock at Raglan ,
year = 2010
}