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Conference Proceedings

Application of Computers & Operations Research in the Minerals Industry (APCOM) Proceeding 2025

Conference Proceedings

Application of Computers & Operations Research in the Minerals Industry (APCOM) Proceeding 2025

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Reconfiguring the techno-economic-environmental landscape for low- grade ore extraction - a strategic analysis of stope leaching systems

As the mining industry confronts escalating pressures to meet global demand for transition metals while upholding rigorous Environmental, Social, and Governance (ESG) standards, the shift towards low-grade and complex orebodies at increasing depth exposes inherent limitations in conventional mining methods. Stope Leaching (SL) is re-emerging as a viable, sustainable alternative to address these complex extraction scenarios, offering improved economic resilience through lower sensitivity to ore grade and a reduced environmental footprint. However, the lack of robust quantitative tools for strategic optimisation significantly hinders comprehensive assessment of SL viability, restricting industry adoption by obscuring key economic and operational insights necessary for informed decision-making. The viability of SL systems depends on complex interactions involving mineralogy, fragmentation, stope geometry, leaching kinetics, and fluid flow dynamics. These parameters introduce spatiotemporal complexities beyond the scope of traditional stoping optimisation methodologies. This paper identifies the key techno-economic and environmental parameters essential for reliable SL planning and scheduling and proposes a novel, kinetics-informed strategic planning framework tailored specifically to these systems. By incorporating kinetic profiles, solution-handling capacity, and time-evolving operating costs directly into the optimisation model, this dynamic approach ensures critical factors such as diminishing returns and opportunity-cost trade-offs are systematically integrated throughout the mine planning process. The resulting framework enables scenario-based analyses that more accurately capture value generation, enhance operational flexibility, and address sustainability expectations, providing a comprehensive foundation for improved decision-making for SL systems.
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  • Reconfiguring the techno-economic-environmental landscape for low- grade ore extraction - a strategic analysis of stope leaching systems
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  • Published: 2025
  • Unique ID: P-04809-F4F9M0

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