Ore sorting helps extend mine life by making it economically viable to process lower-grade and marginal ore that would typically be discarded. By removing waste before milling and enriching the ore feed, it raises the effective head grade, enhancing project economics and cash flow. This preconcentration allows for a lower cut-off grade, expanding the resource base and converting previously uneconomic material into mineable reserves. Over time, this leads to greater total ore throughput, improved recoveries, and reduced energy and water consumption, supporting more sustainable mining operations(Strauss, n.d.).
Case studies show that bulk ore sorting increases ore grade and reduces the volume of material sent for processing, which can accelerate production schedules and boost net present value (NPV). It also lowers operating costs, enhances throughput and recovery efficiency, reduces dilution, and improves grade control. Together, these advantages enhance profitability, provide greater flexibility in mine planning, and contribute to a longer mine life (Understanding the Operation of Grinding Mills in the Mining and Mineral Processing Industry – NEWS – SMMVIK Machinery, n.d.).
Ore sorting also makes it economically feasible to process low-grade stockpiles or satellite deposits by lowering costs and minimizing environmental impact. To fully realize its benefits, factors such as capital and operating expenses, maintenance, feed preparation, and ore variability must be carefully managed. Overall, ore sorting serves as a strategic approach to enhance resource efficiency, economic performance, and mine life, while supporting more sustainable mining practices(Understanding the Operation of Grinding Mills in the Mining and Mineral Processing Industry – NEWS – SMMVIK Machinery, n.d.).
Ore sorting is fundamentally changing how long mines can operate! By making marginal ore economically viable, how does this technology effectively extend mine life and expand reserve estimates? Share your insights!
Reference:
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Strauss, T. (n.d.). Ore Sorting in Mining.
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Understanding the operation of grinding mills in the mining and mineral processing industry—NEWS – SMMVIK Machinery. (n.d.). Retrieved September 17, 2025, from https://www.millvik.com/news/understanding-the-operation-of-grinding.html
