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- W90252021 abstract "In a tailings storage facility, the chemistry of pore water is a function of oxidation and dissolution of sulfide minerals, containing metals and metalloids, the neutralising effect of gangue minerals and the geochemical processes controlling solute equilibria such as pH, redox potential, precipitation, ion exchange and adsorption. On the other hand, the changes in geochemical composition of tailings feed over time is a function of spatial variability within the orebody and modifications in processing method. Tailings properties such as pyrite content, pH, concentration of deleterious elements, surface chemistry, pore water chemistry and particle size are already shaped in the dynamic environment of a process plant.To engineer desired environmental outcomes, a new research framework is needed. The new approach should follow the physical and geochemical processes of tailings feed and construct models that can be used for the prediction of seepage water quality and dust propagation and evaluate the potential re-processing of tailings or production of tailings with desirable surface chemistry, particle size and internal structure. The challenge of developing tailings engineering model is not in laboratory techniques, but more of the overall communication of results and establishing the link between disciplines. It requires investigating geochemistry across mining and processing for improved environmental outcomes at tailings storage facilities.The paper reviews the current tailings management practices by comparing the geochemistry and mineralogy of tailings and the chemistry of seepage water from three Australian case studies in the context of geology, mineral processing and climate. Some alternative methods of tailings management are also reviewed and it is concluded that a proactive multi-disciplinary approach is needed with respect to tailings management, based on a novel integrated research framework." @default.
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- W90252021 date "2012-01-01" @default.
- W90252021 modified "2023-09-27" @default.
- W90252021 title "Geochemistry of tailings and seepage from three tailings storage facilities in Australia - Uncapped, capped and active tailings" @default.
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