Ball Mill — patient grinding of hard, abrasive feeds.
Tumbling steel or ceramic balls inside a rotating shell deliver fine grinding for the hardest materials. Closed-circuit with a classifier when a tight distribution is required.
- Range
- 20 – 200 µm
- Throughput
- 0.5 – 6 t/h
- Power
- 30 – 400 kW
- Wear
- Mn-steel liner · ceramic balls
What it is.
The Ball Mill is THOR's fine-grind platform for hard and abrasive feeds the impact mills cannot handle. Steel or ceramic media tumble inside a rotating drum, fracturing the feed by repeated impact and attrition over a long residence time.
How it works.
Shell rotation lifts the media to a critical angle then drops them onto the feed bed. Particle size is controlled by media size, shell speed, residence time and (for closed-circuit installations) classifier cut. Forgiving of feed variability; intolerant of contamination.
Specs envelope.
Shell 1200 / 1800 / 2400 mm. Motor 30 – 400 kW. Throughput 0.5 – 6 t/h. Mn-steel or alumina-lined shell; chrome steel or alumina balls. Closed-circuit with an air classifier is standard for fines below 50 µm.
Where it earns its keep.
The Ball Mill is the platform of choice for cement clinker, abrasive minerals, refractories and other feeds that destroy contact mills. Patience over speed — but unbeatable on toughness and unit-energy efficiency at fine cuts.
Other platforms.
The rest of the THOR family. Compare or pair — air classifying is often integrated with a mill.