Ball mill is a grinding equipment that uses collision, compression, and attrition between steel balls (grinding media) and materials, assisted by a liquid medium (usually water), to reduce material particle size. Its core working process is as follows:

1. Feeding & Mixing: Raw materials (e.g., ores, chemical raw materials) are fed into the rotating cylinder together with water in a specific ratio, forming a slurry.

2. Rotary Grinding: Driven by a motor, the cylinder rotates around its horizontal axis (typically at 65%-85% of the critical speed). Steel balls inside are lifted to a certain height by centrifugal force and friction, then fall to impact the materials. Meanwhile, relative motion between balls, between balls and the cylinder wall, and between balls and materials generates shear and compression forces, further refining particles.

3. Classification & Discharge: Fine particles in the slurry are discharged through screens or overflow devices at the cylinder’s end, while coarse particles remain inside for continuous grinding until they reach the target size.

Key Notes: The liquid medium not only facilitates material transport but also reduces dust, cools the system, and prevents excessive agglomeration of fine particles. Wet ball mills are widely used in mineral processing, ceramics, and chemical industries for their high efficiency and adaptability to fine grinding.