Fundamentals of Jet Milling and Hammermilling

Both jet milling and hammermilling are the most common size reduction operations in many industries. Fully understanding the fundamentals of these mills can assist the selection of the right type of milling equipment, as well as improving both their operability and energy efficiency. Here the milling mechanism, the importance of feeding, and the design of air systems for both mills are discussed. The selection of nozzle for jet mills, the classification principle, and the use of steam in jet milling are also deliberated.