A mobile crusher consumes 120–280 litres of diesel per 10-hour shift. Fuel consumption depends on the material, the load, the operator and the type of crusher; it can be reduced through regular maintenance and by avoiding idling.
When the crusher is not fully loaded, specific fuel consumption increases non-linearly; at 60–70%, it is 12–18% higher than the rated value; reducing the rotor speed by 10–12% cuts the excess consumption by 4–6%.
The production of 1,000 tonnes of granite aggregate in the 5–20 mm size range requires 120–180 litres of diesel; consumption is broken down by the stages of quarrying, crushing, screening and transport. Data is also available for limestone aggregate.
A crusher with a return screen consumes 18.2–22.7 litres of fuel per hour; fuel consumption depends on the proportion of material returned and is 21–28% higher than without a screen, whilst remaining stable under equal feed rates.
A mobile rotary crusher with a capacity of 300 tonnes per hour consumes 28–35 litres of diesel per hour; this figure depends on the raw material, operating conditions and temperature; a steady feed results in a deviation of up to 7%.
The diesel consumption of a mobile crusher per tonne of limestone is 1.2–2.8 litres; this depends on the type of crusher, the raw material and the operating conditions. There are methods for reducing fuel consumption.
Following the installation of a closed-circuit return screen, the throughput of the crushing lines is 82–91% compared to the open-circuit system, whilst the output of the finished product increases by 22–34%. A key factor is the return ratio of 18–27%; screens are replaced every 1,200 hours, although there are variations depending on the type of screen and raw material.
The capacity of a mobile rotary crusher for reinforced concrete is 80–350 tonnes per hour, depending on the size of the feed material and the desired particle size; the presence of a magnetic separator, the type of rotor and the base; the process of removing the reinforcement takes 4–7% shifts.
When switching a rotary crusher from the 0–40 mm size range to the 0–20 mm size range, throughput falls by 35–42% according to tests carried out between 2023 and 2025; the reasons for this are longer crushing times, higher load, smaller screen mesh sizes; this figure depends on the hardness of the raw material, the rotor speed and the moisture content.
A mobile jaw crusher for granite blocks up to 600 mm has a capacity of 80–350 tonnes per hour, depending on the model, settings, feed rate, screen size and moisture content; exceeding the specified limits reduces the service life of the components.
