Serge Ouellet, Bruno Bussière
Oxygen consumption tests were performed on 5 manufactured laboratory tailings containing approximately 4, 12, 22, 34 and 74% wt. of pyrite at different degree of saturation, and on the same tailings when incorporated into cemented paste backfill (CPB). Oxygen consumption results showed that tailings reactivity depends on pyrite content and degree of saturation. For CPB samples, oxygen consumption seems to be related also to type of binder. The results showed that the reactivity of a given paste backfill recipe does not significantly increase after 28 days of curing time. Comparing the oxygen consumption results of sulphide tailings and the corresponding paste backfill samples indicated that CPB samples are less reactive than the non-cemented manufactured tailings at degrees of water saturation less than 70%. However, at higher degrees of saturation, the oxygen consumption results of the manufactured tailings were similar and even less than the CPB samples. The results of this preliminary study demonstrate that CPB technology is a viable means to reduce the reactivity of sulphide tailings in surface disposal areas.
@article{f0139a34-c546-47c5-a9a4-0c5d2e7b37f8,
title={Sulphide Reactivity Within Cemented Past},
author={Serge Ouellet and Bruno Bussière},
year={2026},
language={en}
}TY - JOUR TI - Sulphide Reactivity Within Cemented Past AU - Serge Ouellet AU - Bruno Bussière PY - 2026 LA - en ER -
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