Long-term Open-pit Mine Production Scheduling with Grade Engineering
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Open pit mine production scheduling is a strategic decision-making problem that plays an important role in surface mining, as the economic viability of a mining project is highly dependent on careful long-term planning. An open pit mine production schedule seeks to determine the optimal sequence for a mineral deposit and the flow of materials within a mineral value chain (i.e., stockpiles, waste dumps and processing streams). This thesis investigates open pit mine production scheduling with the incorporation of Grade Engineering. The Grade Engineering concept was introduced by the Cooperative Research Centre for Optimising Resource Extraction. This thesis then, for the first time in the literature, develops and implements a new mixed-integer programming formulation for open pit mine production scheduling that considers Grade Engineering preconcentration techniques.
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Ren, H.; Topal, Erkan (2014)Typical mine planning process includes creating a mining block model, applying the ultimate pit limit analysis and creating mining cuts for production scheduling. Mixed integer linear programming (MILP) has been used ...
Khan, A.; Asad, Mohammad Waqar (2019)Cut-off grade controls the movement of materials among mining, processing and refining stages of an open pit mining operation. The cut-off grade policy constitutes a schedule of cut-off grades and the associated quantities ...
A mathematical programming model for optimal cut-off grade policy in open pit mining operations with multiple processing streamsKhan, A.; Asad, Mohammad Waqar (2018)Cut-off grade classifies the available supply of ore (valuable) and waste material within a mineralised deposit. Given the mining, processing and refining limitations of a mining operation, an optimal cut-off grade policy ...