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The research aims to optimize transportation costs and plant feed grades in polymetallic mining operations.

April 1, 2026MathematicsOpen Access

A Hybrid NSGA-III and PSO Framework for Multi-Objective Ore Blending Optimization in Open-Pit Polymetallic Mines

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Hybrid optimization strategy minimizes costs and maximizes ore grade in open-pit mines, suggesting improved processes.

The research aims to optimize transportation costs and plant feed grades in polymetallic mining operations.
Proposed a two-stage hybrid optimization strategy combining NSGA-III and PSO.
Utilized the VIKOR method for selecting optimal blending schemes.
Validated the approach with a real-world production case.
Achieved a cost reduction of more than 9%.
Increased gold grades to 2.40–3.16 g/t for oxide ores and 2.14–2.17 g/t for sulfide ores.
Demonstrated significant improvement in overall plant feed grade.

Ji et al. (2026) studied this question.

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