Filtration testing methodology

Authors: Palmer, J Download Paper Open access courtesy of:

DOI https://doi.org/10.36487/ACG_repo/2655_33

Cite As:
Palmer, J 2026, 'Filtration testing methodology', in AB Fourie, M Horta, M Oliveira & S Wilson (eds), Paste 2026: Proceedings of the 28th International Conference on Paste, Thickened and Filtered Tailings, Australian Centre for Geomechanics, Perth, pp. 1-15, https://doi.org/10.36487/ACG_repo/2655_33



Abstract:
As the importance of filtration in the dewatering of mining slurries increases, the methodology for testing remains fragmented, often dictated by individual technology providers. In the context of tailings, while various storage methods are acceptable, the Global Industry Standard on Tailings Management (International Council on Mining and Metals et al. 2020) encourages solutions that enhance the safety and sustainability of tailings storage. Despite a solid technical understanding of filtration, there are no dependable predictive models, making testing an essential component in defining the design of filtration solutions. In the case of filtered tailings, materials handling and the geotechnical properties of the filtered tailings also play crucial roles in the design of a dry stack solution. This paper presents experimental results from different scale test equipment to illustrate the procedures developed to predict filter performance and investigates the overlaps between the data collected in filtration and the outcomes of materials and geotechnical testing. These results are compared to full-scale filters to assess scale-up factors that may be applied. The findings highlight the need for standardised testing methodologies and the development of predictive models to improve the efficiency and reliability of filtration processes in mining operations. By addressing these challenges, the industry can move towards more-sustainable and safer tailings-management practices.

Keywords: filtration, dry stacking tailings

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