Determination of the optimum cut-off grades and production scheduling in multi-product open pit mines using imperialist competitive algorithm (ICA)
| Autor: | Sadjad Mohammadi, Eshagh Pourzamani, Reza Kakaie, Mohammad Ataei |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Economics and Econometrics
Stripping ratio Sociology and Political Science business.industry 020209 energy Imperialist competitive algorithm Open-pit mining 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law Multi product 01 natural sciences Net present value Sizing 0202 electrical engineering electronic engineering information engineering Operations management Cut-off Process engineering business Law 0105 earth and related environmental sciences Mathematics |
| Zdroj: | Resources Policy. 51:39-48 |
| ISSN: | 0301-4207 |
| DOI: | 10.1016/j.resourpol.2016.11.005 |
| Popis: | With regard to the immense importance of cut-off grade in designing and planning open pit mines, optimizing this parameter has considerable effects in mining economic. This paper describes objective function for single metal mines with multi-product. For this purpose, the operation process in mine No.1 of the Golgohar iron mine that produces three types of products (sizing, concentrate and pellet) for sales is used to model objective function. Then the Imperialist Competitive Algorithm (ICA) has been utilized to find out the optimum cut-off grades. Consequently, the optimum cut-off grades has been calculated between 40.5 and 47.5% and net present value has been obtained 18,142 billion Rial. In addition, production scheduling is carried out for five years mining plan pushback. Therefore, the average stripping ratio has been determined 1.41. The result shows that by stockpiling low-grade ore, concentrate plant can be fed by maximum capacity for one year addition to the primary plan. |
| Databáze: | OpenAIRE |
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