Abstract
Grade Engineering (GE) refers to a range of pre-concentration techniques and operating methods to improve mineral feed grades by early rejecting low uneconomic materials prior to energy and cost intensive processing. While inclusion of a GE plant within the mineral value chain may assist the development of realistic strategic mine plans, the existing models that offer solution to the open pit production scheduling problem ignore the important and relatively new GE techniques. This paper presents an overview of a new mathematical formulation that optimizes annual production scheduling of an open pit mining operation with Grade Engineering subject to a set of operational and technical constraints. The computational results show that the proposed method outperforms than the existing models without GE plant.
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Acknowledgements
Cooperative Research Centre for Optimising Resource Extraction (CRC ORE) provided the funding (Project ID Code: P4-007; Curtin University Grant # 58994) for the work contributed in this paper. The collaboration between the authors would not have been possible without the financial support from CRC ORE. CRC ORE is part of the Australian Government’s CRC Program, which is made possible through the investment and ongoing support of the Australian Government. The CRC Program supports industry-led collaborations between industry, researchers and the community. We are thankful to the CRC ORE management (specially, Paul Revell, Michael Scott and Luke Keeney) for their valuable collaboration and technical comments.
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Fathollahzadeh, K., Cigla, M., Mardaneh, E., Asad, W. (2020). An Application of an Open Pit Mine Production Scheduling Model with Grade Engineering. In: Topal, E. (eds) Proceedings of the 28th International Symposium on Mine Planning and Equipment Selection - MPES 2019. MPES 2019. Springer Series in Geomechanics and Geoengineering. Springer, Cham. https://doi.org/10.1007/978-3-030-33954-8_3
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DOI: https://doi.org/10.1007/978-3-030-33954-8_3
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