Pallomyllytys

Pallomyllytys, also known as ball milling, is a size reduction technique used to process materials into fine powders or slurries. It operates on the principle of impact and attrition. The process takes place within a rotating cylindrical or conical vessel called a mill. This vessel is partially filled with grinding media, typically hard spheres made of ceramic, steel, or other durable materials. The material to be ground is also introduced into the mill along with the grinding media. As the mill rotates, the grinding media are lifted and then fall back down due to gravity, causing the material to be crushed and broken through repeated impacts and frictional forces.

The effectiveness of pallomyllytys depends on several factors, including the size and type of grinding media, the speed of rotation, the filling volume of the mill, and the properties of the material being processed. Different types of mills exist, such as batch mills, continuous mills, and planetary ball mills, each suited for specific applications and production scales. Pallomyllytys is widely employed across various industries, including ceramics, pharmaceuticals, mining, and chemical processing, for tasks such as grinding raw materials, producing fine powders for advanced applications, and preparing samples for analysis. The resulting particle size can range from micrometers to nanometers, depending on the milling parameters and duration.