What is the acceptable feed size of Hammer mill with internal classification.......?
Hammer mills create a wide range of products sizes, from millimeters to several-tens of microns.
Liu, G. (2017, June). Select the optimal hammer mill or jet mill for your application by characterizing the feed materials and conducting mil tests. Hammer Milling and Jet Milling Fundamentals. https://www.aiche.org/sites/default/files/docs/pages/hammer_milling_and_jet_milling_fundamentals.pdf