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Optimization and Experimental Study of Iron Ore Grinding Medium Parameters Using EDEM Discrete Element Software.

Zhifeng Yin¹, Yuhang Zhang¹, Huajun Zhu¹

¹School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China.

Materials (Basel, Switzerland)

|October 16, 2024

Summary

Optimizing ball mill grinding media density is key for energy savings. Using a 5.8 g/cm³ density grinding medium reduces energy consumption while maintaining grinding efficiency, cutting industrial energy use.

Keywords:

ball mill discrete element method energy saving particle breakage

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Area of Science:

Materials Science
Mechanical Engineering
Industrial Chemistry

Background:

Ball mills are essential in industrial production, with energy consumption being a major concern.
Grinding media selection significantly impacts ball mill efficiency and energy usage.
Higher density grinding media theoretically improve grinding, but optimal density varies with material properties.

Purpose of the Study:

To investigate the effect of grinding media density on energy consumption and grinding efficiency in ball mills.
To determine the optimal grinding medium density for iron ore grinding to reduce energy usage.
To provide insights for selecting appropriate grinding media to enhance industrial energy savings and reduce carbon emissions.

Main Methods:

Simulating the motion of grinding media with three different densities (5.8, 7.8 g/cm³, and another unspecified density) within a ball mill.
Utilizing iron ore as the material to be ground in the simulations.
Analyzing grinding speed, particle fineness, and energy consumption for each grinding medium density.

Main Results:

Grinding media with densities of 5.8 g/cm³ and 7.8 g/cm³ demonstrated faster grinding to finer particle sizes.
The 5.8 g/cm³ density grinding medium resulted in lower energy consumption compared to the 7.8 g/cm³ density medium.
Simulations indicated that optimizing grinding medium density is crucial for balancing grinding performance and energy efficiency.

Conclusions:

Employing a 5.8 g/cm³ density grinding medium in ball mills can significantly reduce energy consumption.
Selecting the appropriate grinding medium density is vital for achieving energy savings and minimizing carbon footprint in industrial grinding processes.
This research aids in optimizing grinding operations for various materials, contributing to sustainable industrial practices.