Mill (grinding) - Wikipedia
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), wind or water ().Ball Mill: Operating principles, components, Uses,,Several types of ball mills exist. They differ to an extent in their operating principle. They also differ in their maximum capacity of the milling vessel, ranging from 0.010 liters for planetary ball mills, mixer mills, or vibration ball mills to several 100 liters for horizontal rolling ball mills.Maize milling - Wikipedia,De-germinating the maize prior to milling Milling with rollers rather than hammer mills or plate mills/disc mills. Alternatively, if the budget is small, the whole maize, after cleaning and conditioning, may be milled by means of the plate mill only and then sifted (without de-germination).