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Type: Journal article
Title: Multi-mineral cut-off grade optimization by grid search
Author: Cetin, E.
Dowd, P.
Citation: Journal of the South African Institute of Mining and Metallurgy, 2013; 113(8):659-665
Publisher: South African Inst Min Metall
Issue Date: 2013
ISSN: 0038-223X
Statement of
E. Cetin and P.A. Dowd
Abstract: Orebodies that contain more than one economically important mineral are generally evaluated by parametric cut-off grades. This approach often leads to mis-valuation of mineral deposits because cut-off grades are not based on the grades of each individual mineral and, because of the parametric formulation, are only indirectly related to the individual grade distributions. The only realistic approach is a formulation that accounts separately for each component mineral. The grid search method can be used as a means of multi-mineral cut-off grade optimization in this context. This paper describes the use of the grid search method in cut-off grade optimization for multi-mineral deposits. The authors introduce the general concepts of the method and formulate its application to cut-off grade optimization; they describe a software implementation of the method that can accommodate cut-off grade optimization for mineral deposits that contain up to three economic minerals.
Keywords: cut-off grade; optimization; grid search; multi-mineral deposits.
Rights: © The Southern African Institute of Mining and Metallurgy
RMID: 0020132148
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Appears in Collections:Civil and Environmental Engineering publications

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