Energy Recovery in mining refers to the capture and beneficial reuse of energy that would otherwise be dissipated as waste heat, potential energy, kinetic energy, or chemical energy during operational processes. In bauxite, gold, iron ore, and diamond mining, energy recovery strategies offer significant opportunities to reduce net energy consumption, lower operational costs, and decrease greenhouse gas emissions. Common forms of energy recovery in mining include the use of regenerative braking systems on haul trucks and conveyor systems operating on downhill gradients, which capture kinetic energy and convert it back into electrical energy fed to the grid or local battery storage. In processing plants, waste heat recovery from compressors, kilns, autoclaves, and drying circuits can be used to pre-heat process water, generate steam for power production, or provide space heating for facilities in cold climates. In gold heap leach operations, exothermic chemical reactions may offer limited heat recovery potential. Iron ore sintering and pelletizing plants generate significant thermal waste that can be recovered through heat exchangers. Energy recovery systems are evaluated on the basis of technical feasibility, capital cost, payback period, and integration complexity, and represent an increasingly important component of holistic energy management strategies in modern mining operations.
