Also known as a sand mill, it is equipped with a number of rotating grinding discs and various types of grinding bodies for grinding in a fixed cylinder crushing chamber.
The abrasive body is Ottawa sand, glass beads, steel beads or ceramic balls.
The material is mixed with the grinding body by a rotating grinding disc and rotated, and is pulverized by grinding and shearing between the grinding body and the parts of the grinding chamber. There are horizontal sand mills and vertical sand mills, such as cylindrical ring gap sanders and tower sanders. Generally it is wet grinding.
Used in coatings, dyes and other industries.