Authors: Engels, J; Gonzalez, H; Aedo, G; McPhail, GI
Editors: Jewell, RJ; Fourie, AB
Conference: 21st International Seminar on Paste and Thickened Tailings, 11-13 April, Perth
Published: Australian Centre for Geomechanics, Proceedings of the 21st International Seminar on Paste and Thickened Tailings, pp.389-400, Perth
During 2016, Sierra Gorda Sociedad Contractual Minera (SCM) completed a concept study for the modification of their single point tailings discharge system to a spigot style arrangement with the goal of increasing beach slope and increasing the deposition area within their tailings deposit limits. A series of deposition trials on a laboratory scale were completed to identify design and operational parameters associated with implementing spigot style systems. Deposition modelling was also completed to assist with the development of the short and long-term design for the tailings storage facility.
During 2017, a trial spigot system was developed operating gravitationally for 58–62% solids for up to 110,000 tpd. Due to the success of this system, this was subsequently complemented with three additional spigot systems with a further four to be developed in 2018.
This paper provides a review of the laboratory through to industrial-scale trials conducted and the results and optimisations considered for the short and long-term design of Sierra Gorda SCM´s tailings storage facility.
Keywords: beach slope, laboratory, industrial trial, spigots
Engels, J, Gonzalez, H, Aedo, G & McPhail, GI 2018, 'Implementation of spigot discharge systems for high-density tailings at Sierra Gorda Sociedad Contractual Minera, Chile', in RJ Jewell & AB Fourie (eds), Proceedings of the 21st International Seminar on Paste and Thickened Tailings
, Australian Centre for Geomechanics, Perth, pp. 389-400.
Gaete, S 2014, ‘Applying large-scale thickened tailings technology on the sulfide line at Minera Centinela’, in S Barrera (ed.), Proceedings of the 2nd International Seminar on Tailings Management, Gecamin, Santiago.
Gaete, S, Bello, F, Engels, J & McPhail, G 2014, ‘Thickening and deposition trials: laboratory through to industrial scale – Minera Esperanza’, in RJ Jewell, AB Fourie, PS Wells and D van Zyl (eds), Proceedings of the 17th International Seminar on Paste and Thickened Tailings, InfoMine Inc., Vancouver, pp. 381–391.
McPhail, GI 1995, Prediction of the Beaching Characteristics of Hydraulically Placed Tailings, PhD dissertation, University of the Witwatersrand, Johannesburg.
McPhail, GI 2008, ‘Prediction of the beach profile of high-density thickened tailings from rheological and small-scale trial deposition data’, in AB Fourie, RJ Jewell, P Slatter and A Paterson (eds), Proceedings of the Eleventh International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 179–188.
McPhail, GI 2014 Using small scale flumes to determine rheology at low shear rates, in S Barrera (ed.), Proceedings of the 2nd International Seminar on Tailings Management, Gecamin, Santiago.
McPhail, GI, Bello, F & Engels, J 2017, ‘Beach profile modelling at Centinela Mine, Chile’, Proceedings of the 4th International Seminar on Tailings Management, Gecamin, Santiago.
McPhail, GI, Engels, J & Ugaz, R 2016, ‘Application of fluidised bed column testing to the assessment of beaching and segregation characteristics of mine tailings’, in S Barrera and RJ Jewell (eds), Proceedings of the 19th International Seminar on Paste and Thickened Tailings, Gecamin, Santiago, chapter 6, paper 6.