Most mills used in mining rely on impact to breakdown rock to a suitable size for , What is the difference of ball mill, attrition mill, sand mill, and small media mill? , Engineering: What is the working principle of ball mill?what are its features?.
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 process There are many different types of mills and many types of materials processed in them Historically mills were powered by hand (eg, via a hand crank), working , Attrition between grinding balls and ore particles causes grinding of finer.