Inline flocculation: an update to fundamental considerations

Authors: Revington, A; Wells, PS

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DOI https://doi.org/10.36487/ACG_repo/2555_14

Cite As:
Revington, A & Wells, PS 2025, 'Inline flocculation: an update to fundamental considerations', in AB Fourie, A Copeland, V Daigle & C MacRobert (eds), Paste 2025: Proceedings of the 27th International Conference on Paste, Thickened and Filtered Tailings, Australian Centre for Geomechanics, Perth, pp. 209-220, https://doi.org/10.36487/ACG_repo/2555_14

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Abstract:
Tailings management remains a significant challenge for the mining industry. Inline flocculation offers a promising solution, providing efficient and cost-effective thickening and dewatering of tailings. This paper will delve into recent advancements in inline flocculation, focusing on fundamental considerations that influence its effectiveness. We will explore factors such as: characterisation of tailings – the impact on dewatering capability and flocculant dosage with changing tailings types mechanics of slurry and polymer flows – determining the optimal mixing conditions for any application polymer injection – the influence of injector design on optimising the dewatering and dosage outcomes for inline flocculation conditioning and water release – the role of piping distance in dewatering outcomes if polymer injection has been performed correctly. By understanding these fundamental principles, mining operations can optimise their inline flocculation processes, leading to improved tailings thickening, reduced water consumption and enhanced environmental performance.

Keywords: inline flocculation, chemical mixing, scale up

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