Energy-Efficient Loading and Hauling Operations

Approximately, 40% of the total energy used in surface mines is related to diesel consumption. Truck haulage is responsible for a majority of this. This chapter introduces the principal equipment used to load and haul materials in mines, namely trucks, electric rope shovels, hydraulic excavators and crushing and conveying systems. The chapter discusses factors that contribute to the energy-efficient operation of such equipment. Based on gross weight hauled per unit weight of payload, belt conveyors appear to be the most energy-efficient means of transporting material in surface mines. However, a number of factors, including large upfront capital expenditure and limited ability to relocate and scale up belt capacities, currently restrict their widespread applicability.