|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|
Shafahi, Zia Aldin
|Keywords:||optimum cut-off grades|
|Publisher:||De Gruyter Open|
|Citation:||Rahimi E, Oraee K, Shafahi ZA & Ghasemzadeh H (2015) Determining the Optimum Cut-Off Grades in Sulfide Copper Deposits, 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.|
|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.|
|Affiliation:||Islamic Azad University|
Management Work and Organisation
K.N. Toosi University of Technology
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