An adaptive large neighborhood search heuristic to optimize mineral value chains under metal and material type uncertainty

This paper addresses the optimisation of mineral value chains under metal and material type uncertainty. A mathematical model to simultaneously optimise extraction decisions destination is proposed. fix-and-optimise scheme that exploits structure problem uses relaxation decomposition techniques introduced obtain an initial solution, adaptive large neighbourhood search heuristic developed improve this solution. The proposed solution approach tested on a real copper-gold mining complex. results these experiments show ability efficiently address instances realistic size provide schedules where most valuable mined processed early in life mine risk not meeting production targets successfully managed.