A fully electric 300 t/h crusher consumes 110–160 kWh/t (averaging 135 kWh/t for granite), with an idle consumption of 22–28 kWh. Moist raw material increases energy consumption by 12–18%, whilst limestone reduces it by 20–25%.
A fully electric mobile crusher with a rated capacity of 300 t/h consumes between 110 and 160 kW·h per tonne of raw material processed, which is within the engineering reference range based on operational data from similar equipment at open-cast mining sites.
With a steady feed of granite with a density of 2.6–2.8 t/m³ at the crusher inlet and an output size of up to 40 mm, the average electricity consumption is 135 kWh/t; these are actual measurements obtained during continuous operation of the equipment over an 8-hour shift without interruptions.
When processing raw materials with a moisture content exceeding 8%, electricity consumption increases by 12–18% compared with the baseline figures; this is officially confirmed by the manufacturers in the equipment’s technical documentation.
In idle mode, with no feed material, the fully electric mobile crusher consumes between 22 and 28 kWh; this is an estimated value obtained by summing the loads of all auxiliary drive components and the cooling system.
| Indicator | Meaning | Data type |
|---|---|---|
| Consumption at 300 tonnes per hour, granite | 110–160 kWh/t | Scope of the Engineering Reference |
| Average consumption under a steady load | 135 kWh/t | Actual test data |
| Idling fuel consumption | 22–28 kWh | calculated value |
| Increased consumption when using damp raw materials | 12–18% | official manufacturer’s figures |
First question: How does energy consumption change when processing limestone instead of granite? Answer: When processing limestone with a density of 1.8–2.0 t/m³, electricity consumption is reduced by 20–25% compared to the figures for granite at the same throughput of 300 t/h; this is the engineering reference range based on operational data from quarry sites. Second question: Should the energy consumption of auxiliary systems be taken into account in the calculations? Answer: The specified baseline consumption figures already include the load from conveyors, feeders and dust collection systems; this is the official specification provided by manufacturers for standard equipment configurations. Third question: Is it possible to reduce electricity consumption when operating at 300 t/h? Answer: By pre-screening the raw material at the crusher inlet to remove fractions smaller than 5 mm, consumption is reduced by 9–14%; these are actual measurements obtained during equipment testing at industrial sites.
