A disc mill is a type of grinding device that uses one or more rotating discs to break down materials. These discs often feature serrated, grooved, or smooth surfaces and operate by pressing materials between the opposing disc faces.
As the discs rotate, the material is sheared, crushed, or ground depending on the texture and spacing of the disc surfaces. Disc mills can handle a wide range of materials, from grains and minerals to plastics and chemicals, and are commonly used for coarse to medium grinding.
This method of size reduction is efficient for bulk processing, although it may not be suitable for applications requiring ultra-fine powders or contamination-free grinding.