Energy Efficiency in Comminution Processes
Summary
Comminution, the mechanical reduction of ore and other particulate materials, represents one of the most energy-intensive stages of mineral processing and allied industries. Despite technological advances, conventional tumbling mills and crushers often convert less than 5 % of input energy into new surface area, leaving substantial room for efficiency improvements. Energy demands are influenced by feed characteristics, desired product fineness, mill design and operating parameters. Advances in process control, classification integration and novel grinding technologies—such as stirred media mills, high-pressure grinding rolls and pre-treatment methods—have demonstrated significant potential for reducing specific energy consumption. Optimisation strategies now focus on real-time monitoring of particle size and moisture, adaptive control of mill speed and media loading, and hybrid circuits that combine wet and dry grinding. These developments carry global significance by curbing electricity usage, lowering greenhouse-gas emissions and cutting operational costs, thereby supporting sustainable resource extraction and processing.
Research from Nature Portfolio
No recent Nature Portfolio content available.
Energy Efficiency in Comminution Processes publication trend
The graph below shows the total number of articles in energy efficiency in comminution processes across all publications each year (not limited to Nature Index journals).
Technical terms
Comminution: Mechanical process of reducing the size of particles by crushing and grinding.
Specific energy: Energy input per unit mass required to achieve a given size reduction.
Stirred media mill: Grinding equipment where media and ore are agitated in a stationary vessel to effect particle breakage.
Discrete Element Method (DEM): Numerical technique that models individual particles to predict granular flow and collision dynamics.
Classification circuit: Arrangement of equipment that separates particles by size to recycle coarse fractions and improve overall grinding efficiency.
References
- Energy-Efficient Advanced Ultrafine Grinding of Particles Using Stirred Mills—A Review. Energies (2023).
- Investigating the impact of impeller geometry for a stirred mill using the discrete element method: Effect of pin number and thickness. Powder Technology (2023).
- On-Line Optimization of Energy Consumption in Electromagnetic Mill Installation. Energies (2021).
About these summaries
This Nature Research Intelligence Topic summary is created with the cited references and a large language model. We take care to ground generated text with facts, and have systems in place to gain human feedback on the overall quality of the process in line with our AI principles. We strive to create accurate and useful summaries for people unfamiliar with the research topic and that supports this goal. These pages are a beta release and will be updated as we learn how best to help people gain value from a research topic summary.
Turn complex research questions into confident strategic decisions
When you're under pressure to set direction, justify investment, or understand your competitive position, you need more than raw data — you need trusted insights you can act on.
Benchmark your performance against global peers using robust, methodologically sound analysis.
Combine quantitative metrics with qualitative expert insight to uncover strengths, gaps and emerging opportunities.
Gain tailored, decision-ready recommendations aligned to your strategic priorities.
Talk to us to learn more about our data dashboards and bespoke strategy reports.
Grow research skills, confidence and careers with training built for every stage of the research lifecycle.
Developed with Nature Portfolio journal Editors and internationally renowned experts. Discover three ways to learn:
Self-paced, online courses in convenient bite-sized units, covering key skills across scientific writing, publishing, grant writing, data analysis, and more.
Expert trainer-led workshops with hands-on exercises and real-time feedback across core research skills, delivered via interactive group sessions.
Editor-led workshops combining core principles in writing and publishing, personalised 1:1 feedback from Nature Portfolio Editors and hands-on exercises.
Explore course catalogues and workshop agendas, enquire about the options or request institutional pricing.