ACM is an air-classifying mill with integrated grinding, classifying, conveying and collecting operations. The milling if required may be carried out in a closed loop operation with dry air or inert gas if required. This flexibility makes the plant suitable to handle explosive makes the plant suitable to handle explosive, heat sensitive or hygroscopic materials.This machine adopts theories of traditional crushing machines and grinding mills. It makes up the shortage of common mills, and it is the best choice to produce coarse powder at big capacity.