Garvie, AM, Linklater, CM, Lestari, R & McCaffery, K 2008, 'Using In Situ Measurements and Modelling to Effectively Manage Large Copper Sulfide Bearing Ore Stockpiles', in AB Fourie (ed.), Proceedings of the First International Seminar on the Management of Rock Dumps, Stockpiles and Heap Leach Pads
, Australian Centre for Geomechanics, Perth, pp. 167-177, https://doi.org/10.36487/ACG_repo/802_15
At the Batu Hijau mine, located on Sumbawa Island, Indonesia, PT Newmont Nusa Tenggara plans to
stockpile approximately 500 Mt of copper ore, for up to 20 years. Much of the copper is present as the
copper sulfide chalcopyrite. Construction of the stockpile commenced in late 2000 and as of early 2007 the
pile contained regions more than 100 m high.
Oxidation of chalcopyrite in stockpiled ore results in reduced copper recovery during flotation. Thus, there
is a need to both forecast and, ideally, reduce the extent of chalcopyrite oxidation occurring over the lifetime
of the stockpile. A combined field measurement and modelling program was undertaken to; identify the main
mechanisms leading to oxidation, predict rate of chalcopyrite oxidation and simulate the reduction of
oxidation of alternative stockpile designs.
Brown, P.L., Comarmond, J.M. and Clark, N.R. (2000) The oxidation of sulfide sulfur in medium- and low-grade
copper ore stockpiles. 1. Column study. Australian Nuclear Science and Technology Organisation
Carslaw, J.C. and Jaeger, H.S. (1959) Conduction of heat in solids. Second Edition, Oxford University Press Inc., New
Lestari, R., McCaffery, K., Garvie, A. and Linklater, C. (2008) Stockpile oxidation management. Proceedings of the
XXIV International Mineral Processing Congress, 24 to 28 September 2008, in preparation. Secretariat of China
IMPC XXIV Organizing Committee.
Pantelis, G., Ritchie, A.I.M. and Stepanyants, Y.A. (2002) A conceptual model for the description of oxidation and
transport processes in sulphidic waste rock dumps, Applied Mathematical Modelling 26, pp. 751-770.
Hydrology of Rock Dumps
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