Authors: Johnson, D; Moghaddam, R; Bin Ahmed, I; Laroche, C

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Johnson, D, Moghaddam, R, Bin Ahmed, I & Laroche, C 2013, 'Comparative evaluation of surface disposal of thickened versus slurry tailings', in R Jewell, AB Fourie, J Caldwell & J Pimenta (eds), Paste 2013: Proceedings of the 16th International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 289-302,

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The conceptual design of a Tailings Management Facility (TMF) for the proposed Hammond Reef gold mine in Canada investigated two options for surface disposal of tailings. Geochemical characterisation testing indicated that the tailings were not acid generating or metal leaching. Bench scale laboratory testing of the tailings’ rheological and dewatering properties were carried out to help define the properties of the thickened tailings at 68% solids content (by mass). Tailings dewatering test results indicated that the tailings could be efficiently dewatered to a solids content of 68% (by mass) using high compression thickeners. Furthermore, rheological test results indicated that the tailings could be pumped using conventional centrifugal pumps at this solids content. The results were used to support a comparison with slurry tailings deposition at 37% solids content (by mass). Conceptual TMF designs were developed for each option to comparatively evaluate the capital and operating costs of each option. The conceptual designs were based on the tailings’ geotechnical properties, available site investigation information, and water management requirements. The geometry of the proposed TMF site allowed for deposition of thickened tailings from a central discharge location to form a cone. However, it was determined that slurry deposition would be most efficient by end discharging from the north perimeter containment dam. A comparison was then made between the volume of perimeter containment dam construction required for the slurry and thickened tailings options. Comparative cost estimates of each option indicated that thickened tailings deposition was more cost effective compared to slurry tailings deposition. Thickened tailings deposition was chosen for the Hammond Reef project because it requires less dam construction, simplifies water management and has other environmental advantages, including reduced risk of tailings dam failure.

ASTM (American Society for Testing and Materials) (2005) D4318–05 Standard test methods for liquid limit, plastic limit, and plasticity index of soils, The Annual Book of ASTM Standards, ASTM International, West Conshohocken, PA, USA, Section 4, Vol. 04.08.
ASTM (2006a) C136–06 Standard test method for sieve analysis of fine and coarse aggregates, The Annual Book of ASTM Standards, ASTM International, West Conshohocken, PA, USA, Section 4, Vol. 04.02.
ASTM (2006b) D854–06 Standard test methods for specific gravity of soil solids by water pycnometer, The Annual Book of ASTM Standards, ASTM International, West Conshohocken, PA, USA, Section 4, Vol. 04.08.
ASTM (2007) D422–63 Standard test method for particle-size analysis of soils, The Annual Book of ASTM Standards, ASTM International, West Conshohocken, PA, USA, Sect. 4, Vol. 04.08.
ASTM (2011) D3080M-11 Standard test method for direct shear test of soils under consolidated drained conditions, The Annual Book of ASTM Standards, ASTM International, West Conshohocken, PA, USA, Section 4, Vol. 04.08.
ICMI (International Cyanide Management Institute) (2002) International cyanide management code for the manufacture, transport and use of cyanide in the production of gold, Washington, DC, USA, viewed 15 March 2013, .
INAP (International Network for Acid Prevention) (2012) Global acid rock drainage guide, viewed 15 March 2013, .
Li, A.L., Ritchie, D., Welch, D. and Been, K. (2009) Stability of large thickened, non-segregated tailings slopes, in Proceedings 12th International Seminar on Paste and Thickened Tailings (Paste09), R.J. Jewell, A.B. Fourie, S. Barrera and J. Wiertz (eds), 21–24 April, Viña del Mar, Chile, Gecamin Limited, Santiago, Australian Centre for Geomechanics, Perth, pp. 301–312.
MEND (Mine Environment Neutral Drainage) (2009) Prediction manual for drainage chemistry from sulphidic geologic materials, MEND Report 1.20.1., December 2009, Natural Resources Canada, Canada.
Price, W.A. (1997) Draft guidelines and recommended methods for the prediction of metal leaching and acid rock drainage at mine sites in British Columbia, Ministry of Energy and Mines, British Columbia, Canada, 159 p.
Queen's Printer for Ontario (2000) Regulation 240/00, Mine development and closure under Part VII of the Mining Act, Ontario, Canada.
Watters, P.J. and Sheahan, T.C. (1996) Using an automated Rowe Cell for constant rate of strain consolidation testing, Geotechnical Testing Journal, Vol. 19, Issue 4, December 1996.
Wasp, E.J., Kenny, J.P. and Ghandi, R.L. (1979) Solid-liquid flow, slurry pipeline transportation, Gulf Publishing Company, Chapter 7.

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