Authors: Moshi, P; DeVries J; Hogg, C; Lane, C

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Moshi, P, DeVries J, Hogg, C & Lane, C 2019, 'Dry stacking of high-grade flake graphite tailings: Tanzania', in AJC Paterson, AB Fourie & D Reid (eds), Proceedings of the 22nd International Conference on Paste, Thickened and Filtered Tailings, Australian Centre for Geomechanics, Perth, pp. 139-152.

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Abstract:
This paper presents some details of the feasibility study for a proposed dry stacked tailings management system for the Mahenge Graphite Project, in Tanzania. Black Rock Mining Limited is focused on developing its Mahenge Graphite Project, which holds the largest high-grade flake graphite resource reserve in Tanzania – the fourth largest graphite resource in the world. Several potential graphite processing operations are being proposed at various locations around the world and tailings management is a unique challenge given the geochemical characteristics of the graphite tailings and the topographical constraints of the site. Dry stacking of the graphite tailings offers a solution which minimises the environmental risks associated with conventional wet tailings and permits water reuse as part of the tailings management process. The project is located in a tropical savannah environment with a distinct difference between wet and dry seasons. Dry stacking offers a unique and innovative approach to minimising potentially large volumes of excess water during periods of high rainfall. At least 80% of the process water can be recycled.

Keywords: dry stacking, graphite tailings

References:
Australian National Committee on Large Dams 2012, Guidelines on Tailings Dams Planning, Design, Construction, Operation and Closure, Australian National Committee on Large Dams, Hobart.
Lubkowski, L, Villani, M, Coates, K, Jirouskova, N & Willis, M 2014, ‘Seismic design considerations for East Africa’, Proceedings of the Second European Conference on Earthquake Engineering and Seismology, European Association for Earthquake Engineering, Istanbul, pp. 201–212.
Terzaghi, K & Peck, R 1967, Soil Mechanics in Engineering Practice, 2nd edn, John Wiley & Sons, New York.
United Republic of Tanzania 2013, Tanzanian Regulations - Water Resources Management (Dam Safety) Regulations, GN 237, dated 2 August 2013, United Republic of Tanzania.




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