Please use this identifier to cite or link to this item:
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
Authors: Rahimi, Esmail
Oraee, Kazem
Shafahi, Zia Aldin
Ghasemzadeh, Hasan
Contact Email:
Keywords: optimum cut-off grades
heap leaching
sulfide deposits
Issue Date: May-2015
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.
Type: Journal Article
DOI Link:
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
Tehran University
K.N. Toosi University of Technology

Files in This Item:
File Description SizeFormat 
Archiwum-60-1-Rahimi.pdf736.29 kBAdobe PDFView/Open

This item is protected by original copyright

Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact providing details and we will remove the Work from public display in STORRE and investigate your claim.