Authors: Simms, P; Grabinsky, M; Zhan, G


Cite As:
Simms, P, Grabinsky, M & Zhan, G 2006, 'Evaporation from Surface Deposited Thickened Gold Tailings', in R Jewell, S Lawson & P Newman (eds), Paste 2006: Proceedings of the Ninth International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 267-274,

Download citation as:   ris   bibtex   endnote   text   Zotero

The rate of evaporation from thickened tailings is an important parameter for the management of surface deposition. Promoting evaporation in a freshly-deposited layer is desirable up to a point, since evaporation causes densification and strength gain, but excess evaporation will desaturate the tailings and consequently increase the risk of acid generation. Therefore, the ability to predict the rate of evaporation to some degree of accuracy would be a substantial advantage in deposition planning. This study, part of a larger project researching the surface deposition of non-plastic, thickened tailings at the Bulyanhulu Gold Mine in Tanzania, investigates drying from thickened gold tailings in the laboratory and in the field. Material presented in this paper includes laboratory comparison of evaporation from a small column (0.3 m diameter by 0.2 m in height) to evaporation from larger-scale tests (2 m by 1 m in plan and 0.1 m in thickness) performed on tailings from Bulyanhulu. These laboratory results are compared with field measurements.

Crowder, J.J. (2004) Deposition, consolidation, and strength of a non-plastic tailings paste for surface disposal. Doctoral Thesis,
University of Toronto.
Fujiyasu, Y. and Fahey, M. (2000) Experimental study of evaporation from saline tailings, Journal of Geotechnical and
Geoenvironmental Engineering 126(1) 18-27.
Fujiyasu, Y., Fahey, M. and Newson, T. (2000) Field investigation of evaporation from freshwater tailings. Journal of Geotechnical
and Geoenvironmental Engineering 126(6) 556-567.
Golder Associates Africa (Golder) (2005) Report on Bulyanhulu Gold Mine Tailings Storage Facility Optimization of Deposition.
Report No. 5098/6586/5/S
Simms, P.H, and Grabinsky, M.W. (2004) A simple method for estimating rates of drying and desaturation of paste tailings during
surface depostion. Proceedings of the 11th annual conference on Tailings and Mine Waste, October 10-13th 2004, pp. 287-292.
Simms, P.H., Grabinsky, M.W. and Zhan, G. (2005) Laboratory evaluation of evaporative drying from surface deposited thickened
tailings at the Bulyanhulu gold mine. Canadian Geotechnical Conference, Saskatoon, Saskatchewan, Sept. 18-21 2005
(Electronic proceedings).
Wilson, G.W., Fredlund, D.G. and Barbour, S.L. (1994) Coupled soil-atmosphere modeling for soil evaporation. Canadian
Geotechnical Journal 31, pp. 151-161.
274 Paste2006,Limerick,Ireland
EvaporationfromSurfaceDepositedThickenedGoldTailings P.Simms,etal.

© Copyright 2022, Australian Centre for Geomechanics (ACG), The University of Western Australia. All rights reserved.
Please direct any queries or error reports to