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Appears in Collections:Management, Work and Organisation Journal Articles
Peer Review Status: Refereed
Title: Determining the Optimum Cut-Off Grades in Sulfide Copper Deposits
Other Titles: Określanie Optymalnej Wartości Odcięcia Zawartości Procentowej Pierwiastka Użytecznego W Złożach Siarczku Miedzi
Author(s): Rahimi, Esmail
Oraee, Kazem
Shafahi, Zia Aldin
Ghasemzadeh, Hasan
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Keywords: optimum cut-off grades
heap leaching
sulfide deposits
Issue Date: May-2015
Date Deposited: 2-Apr-2015
Citation: Rahimi E, Oraee K, Shafahi ZA & Ghasemzadeh H (2015) Determining the Optimum Cut-Off Grades in Sulfide Copper Deposits [Określanie Optymalnej Wartości Odcięcia Zawartości Procentowej Pierwiastka Użytecznego W Złożach Siarczku Miedzi]. Archives of Mining Sciences, 60 (1), pp. 313-328.
Abstract: Optimum cut-off grades determination in mining life affects production planning and ultimate pit limit and it is also important from social, economical and environmental aspects. Calculation of optimum cut-off grades has been less considered for mines containing various mineral processing methods. In this paper, an optimization technique is applied to obtain optimum cut-off grades for both concentration and heap leaching processes. In this technique, production costs and different recoveries of heap leaching method directed into modeling different annual cash flows in copper mines. Considering the governing constraints, the Lagrange multiplier method is practiced to optimize the cut-off grades in which the objective function is supposed to maximize Net Present Value. The results indicate the effect of heap leaching process on the optimum cut-off grades of primary and secondary sulfide deposits.
DOI Link: 10.1515/amsc-2015-0021
Rights: © Archives of Mining Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. (CC BY-NC-ND 3.0) which permits non-commercial use of the work as published, without adaptation or alteration provided the work is fully attributed.
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