A ball mill is a grinding machine that reduces material through impact and attrition using grinding media. As the cylinder rotates, the grinding media—typically steel or ceramic balls—are lifted to a certain height before moving in a cataracting or cascading motion. This continuously subjects the material to impact, compression and grinding until it reaches the particle size required for subsequent mineral processing or further processing.
The equipment supports both wet and dry grinding. It can be used for the fine grinding of crushed material or operated in closed circuit with spiral classifiers, hydrocyclones and other classification equipment. Ball mills are widely used for processing gold, copper, iron and lead-zinc ores, as well as non-metallic mineral materials such as quartz, feldspar and limestone, providing properly sized feed for subsequent gravity concentration, magnetic separation, flotation and leaching processes.
A ball mill operates through a rotating horizontal cylinder containing grinding media. As the cylinder rotates, the media are lifted by friction and the liners before cascading or cataracting under gravity, reducing the material through impact and attrition. The ground product is then discharged either through the hollow trunnion in an overflow mill or through the grate openings at the discharge end in a grate-discharge mill.
Metal Ore Processing: Fine grinding of gold, copper, iron, lead-zinc, and other metal ores to improve mineral liberation for downstream flotation, magnetic separation, gravity concentration, or leaching.
Cement & Building Materials: Grinding of cement clinker, gypsum, and other raw materials to the required fineness for cement and related building-material applications.
Industrial Minerals: Grinding of quartz, feldspar, ceramic raw materials, and other industrial minerals, with optional ceramic liners and grinding media to minimize iron contamination and preserve product purity and whiteness.
Recycling & Environmental: Grinding of steel slag to improve metal liberation and grinding of limestone to produce fine powder or slurry for flue gas desulfurization systems.
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| Model | Cylinder Diameter (mm) | Cylinder Length (mm) | Effective Volume (m³) | Max. Ball Loading (t) | Speed (r/min) | Main Motor (kW) |
|---|---|---|---|---|---|---|
| MQG-1557 | 1500 | 5700 | 8.5 | 12 | 28 | 130 |
| MQG-1564 | 1500 | 6400 | 9.6 | 13 | 28 | 155 |
| MQG-1864 | 1830 | 6400 | 15 | 20 | 23.8 | 210 |
| MQG-1870 | 1830 | 7000 | 16 | 22 | 23.8 | 245 |
| MQG-1880 | 1830 | 8000 | 18.8 | 26 | 23.8 | 280 |
| MQG-2170 | 2100 | 7000 | 22 | 30 | 24.1 | 320 |
| MQG-2175 | 2100 | 7500 | 23.5 | 33 | 24.1 | 355 |
| MQG-2265 | 2200 | 6500 | 22 | 35 | 21.7 | 380 |
| MQG-2270 | 2200 | 7000 | 23.8 | 38 | 21.7 | 380 |
| MQG-2275 | 2200 | 7500 | 25.5 | 42 | 21.7 | 450 |
| MQG-2470 | 2400 | 7000 | 28 | 52 | 21.7 | 570 |
| MQG-2480 | 2400 | 8000 | 32 | 60 | 21.5 | 630 |
| MQG-2750 | 2700 | 5000 | 25.8 | 54 | 20.7 | 630 |
| MQG-2760 | 2700 | 6000 | 31 | 65 | 20.6 | 710 |
Note: Specifications are subject to change without notice due to ongoing product improvement.
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