Planetary ball mills are best suitable for making fine powders of hard, medium hard, type of materials. The high energy impact is responsible for the milling process. The impact is produced as a result of the planetary motion of the milling balls made out of alumina, zirconia, agate, etc. in rotating grinding bowls made from materials like zirconia. Prevest Research Institute is having such planetary ball mills for making fine powders of ceramics, glasses, composites, etc.
