Bazán, I 2020, 'Design Review for a Distributed Tailings Deposition System', in H Quelopana (ed.), 23rd International Conference on Paste, Thickened and Filtered Tailings - PASTE 2020
, Gecamin Publications, Santiago, https://doi.org/10.36487/ACG_repo/2052_97
There has been an increasing move towards high-density thickened tailings systems over the last decade, mainly driven by the need to save water, meet environmental regulations and project specific demands.
A typical tailings distribution system on a Tailings Storage Facility (TSF) consists of a main pipe with multiple discharges operating simultaneously, to distribute the slurry across an extended length over a specific area of the TSF at a time. A potential limitation of these systems is an uneven distribution of slurry flow rate and solids concentration between multiple spigot discharges, where an inadequate design can lead to laminar pipeline flow conditions resulting in particle segregation, and an increased risk of pipeline blockage. An operation with unbalanced flow rates could result in an uneven distribution of solids that could impact the formation of beach slopes and/or cause difficulties for the dam construction.
Paterson & Cooke (P&C) has previously developed several thickened tailings distributed systems, where the discharge points are located on a distribution pipeline which branch off a main pipeline. This previous experience has allowed P&C to develop a methodology for the hydraulic modelling and implementation of these types of systems. This paper presents the methodology for distribution system deposition design review and its implementation of a TSF located in Southern Europe.
Eriz, P., Salinas, C. & Martinson, R. (2018) ‘Gravity Tailings Distribution System: Analysis and Novel Presentation of Hydraulic Performance‘, Tailings 2018 - 5th International Seminar on Tailings Management, Gecamin, Santiago, Chile.
McPhail, G. (2018) ‘Beach Prediction Experience to Date: Further Development and Review of the Stream Power-Entropy Approach‘, Paste 2018 - 21st International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, Australia.
Stowe, J.; Cooke, R.; Farrell, I.; Martinson, R. (2018) ‘Design Considerations for Distributed Tailings Deposition Systems’, Proceedings Tailings and Mine Waste 2018, Colorado State University, Keystone, Colorado, USA.
Bazan, I., Eriz, G., Martinson, R. & Bello, F. (2017) ‘Tailings Distribution Systems Operating with Spigots Discharges: Design and Practical Considerations‘, Tailings 2017 - 4th International Seminar on Tailings Management, Gecamin, Santiago, Chile.
Martinson, R.; Engels, J.; McPhail, G. (2015) ‘High Density Thickened Tailings: New Design Challenges in Transportation and Deposition’. Tailings 2015 - 3rd International Seminar on Tailings Management, Gecamin, Santiago, Chile.
Cooke, R. (2002) ‘Laminar Flow Settling: The Potential for Unexpected Problems‘. 15th International Conference on Hydrotransport, Banff, Canada.