difference between working of mills and crusher
Professional Vertical Roller Mill Manufacturer. Vertical Roller Mill is the most popular grinding machine in recent years, the . and because there is a difference between the speed of rotation of the roller and the .. there is a cylinder, cone type, such as ball, roller .A mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting. Such comminution is an important unit operation in many processes.There are many different types of mills and many types of materials processed in them. Historically mills were powered by hand (e.g., via a hand crank), working animal (e.g., horse mill.