Palmer, J 2018, 'Operational strategies to improve paste plant performance', in RJ Jewell & AB Fourie (eds), Proceedings of the 21st International Seminar on Paste and Thickened Tailings
, Australian Centre for Geomechanics, Perth, pp. 473-482.
Surface deposition of paste is a recognised tailings management practise, yet some sites operate with beach angles lower than expected due to inconsistent thickener underflow densities. By analysing the issues that limit paste plant performance at several sites, we can develop new operational strategies to achieve better control of the paste properties.
Variability in ore mined leads to changes in settling performance and control systems need to adapt to the changes in flocculation. Where the thickening equipment performance is tightly sized, there can be challenges in maintaining the optimum paste consistency.
Alternative flow sheet solutions are evaluated to achieve improved consistency of thickener discharge and slurry rheology, with the aim of producing more consistent beach angles over the life of the tailings storage facility.
Keywords: paste thickening, thickener automation
Behnam, P, Sadegh, J & Seddon KD 2017, ‘Thickener performance variability: underflow soils concentration and flowrate’, Proceedings of the 20th International Seminar on Paste and Thickened Tailings, University of Science and Technology Beijing, Beijing, pp. 29–40.
Jansson, K, Kauppi, J & Kotiranta, T 2014, ‘Towards minimum impact Cu concentrator – a conceptual study’, Materia, vol. 4, pp. 64–67.
Kosonen, M, Kauvosaari, S, Gao, S & Henrikson, B 2017, ‘Performance optimisation of paste thickening’, Proceedings of the 20th International Seminar on Paste and Thickened Tailings, University of Science and Technology Beijing, Beijing, pp. 13–22.
McPhail, GI 2015, ‘Thickening plant concepts’, in RJ Jewell and AB Fourie (eds), Paste and Thickened Tailings – A Guide, 3rd edn, Australian Centre for Geomechanics, Perth, p. 164.
Schumann, R, Levay, G & Ametov, I 2009, ‘The impact of recycling on process water quality in mineral processing’, Proceedings of the Water in Mining Conference, The Australasian Institute of Mining and Metallurgy, Melbourne, pp. 79–86.
Wates, JA, Venter, HA, Dittle, VT & Cooper, RA 2015, ‘Practical observations in beach slope formation and application of the thin layer equilibrium model to observed data’, in RJ Jewell and AB Fourie (eds), Proceedings of the 18th International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 443–453.