Zamorano, C, Ramírez, S, Sánchez, I & Garrido, C 2020, 'Technical and Economic Evaluation of Tailings Dewatering Circuits in the Largest Copper Mines ', 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_19
Several large copper mines are evaluating improvements in the tailings dewatering circuits. Most prevalent alternatives being considered optimize their thickening technologies or the implementation of tailings filtration and stacking. This requirement to optimize water recovery is due to a variety of factors; the deficit and high cost of the water make-up, environmental restrictions, and community relationships. The recent failures in conventional tailing deposit structures and the potential change to reduce the footprint of tailings impounds may also drive the desire to consider alternate technologies.
This paper presents technical and economic review of alternate technologies, considering capital investment and operational costs. The five (5) selected alternatives include thickening technologies, pressure filters and a combination with cyclones for classification and filtration of the coarser fraction and thickening of the finer fraction. The selected alternatives are developed and evaluated at trade off study level.
Rodrigo Gutiérrez. (2019) ‘Operational Challenges of the Use of Thickened Tailings’, Gecamin-Tailings, Santiago, Chile.
Discussion Panel Summary. (2016) ‘Challenges in implementation of highly Thickened Tailings Technology in Large Production Rates’, ACG – Gecamin-Paste.
Raul Espinace, Gabriel Villavicenncio and Andy Fourie. (2016) ‘Thickened Tailings Disposal Technology Experiences in Chile’, Gecamin-Paste, Santiago, Chile.
Christian Kujawa, Jeff Winterton, Rachel Jansen and Robert Cooke. (2019) ‘Innovative Process Engineering to Create Better Tailings Facilities’, Gecamin-Tailings, Santiago, Chile.
Mathew Revell and Richard Pearce. (2016) ‘A revolution in Paste Plant Design’, Gecamin-Paste, Santiago, Chile.
C. Crystal, C. Hore and I. Izama. (2018) ‘Filter-Pressed Dry Stacking: Design Considerations Based on Practical Experience’, Proceedings Tailings and Mine Waste, Keystone, Colorado, USA.
Fred Schoenbrunn, Todd Wisdom, Reuben Neumann and James Chaponnel. (2016) ‘Tailings Filtration Demostration Plant’, Gecamin-Paste, Santiago, Chile.