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, https://doi.org/10.36487/ACG_repo/663_23
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.
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University of Toronto.
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Geoenvironmental Engineering 126(1) 18-27.
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and Geoenvironmental Engineering 126(6) 556-567.
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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
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