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Incorporating environmental issues into optimum cut-off grades modeling at porphyry copper deposits

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  • Osanloo, M.
  • Rashidinejad, F.
  • Rezai, B.
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    Abstract

    Cut-off grade is defined as the grade which discriminates between ore and waste within a given orebody. Determination of a complete optimum cut-off grade policy is a very important function during mine life. Using the modified optimum cut-off grade model presented in this paper not only the net present value of a porphyry copper mining project is maximized, but also the adverse environmental impacts of the project are minimized simultaneously. This methodology is more effective in long-range planning. For showing the effectiveness of the model, two scenarios are considered in a hypothetical deposit and the results show that incorporating the modified optimum cut-off grade policy, the net present value will be increased by 3.6% in comparison with the Base Case.

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    Bibliographic Info

    Article provided by Elsevier in its journal Resources Policy.

    Volume (Year): 33 (2008)
    Issue (Month): 4 (December)
    Pages: 222-229

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    Handle: RePEc:eee:jrpoli:v:33:y:2008:i:4:p:222-229

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    Web page: http://www.elsevier.com/locate/inca/30467

    Related research

    Keywords: Acid-generating rocks Cut-off grade policy Mine design and planning Porphyry coppers;

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    Cited by:
    1. Azimi, Yousuf & Osanloo, Morteza & Esfahanipour, Akbar, 2013. "An uncertainty based multi-criteria ranking system for open pit mining cut-off grade strategy selection," Resources Policy, Elsevier, vol. 38(2), pages 212-223.
    2. Waqar Ali Asad, Mohammad & Dimitrakopoulos, Roussos, 2012. "Optimal production scale of open pit mining operations with uncertain metal supply and long-term stockpiles," Resources Policy, Elsevier, vol. 37(1), pages 81-89.
    3. Asad, Mohammad Waqar Ali & Dimitrakopoulos, Roussos, 2013. "A heuristic approach to stochastic cutoff grade optimization for open pit mining complexes with multiple processing streams," Resources Policy, Elsevier, vol. 38(4), pages 591-597.

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