... High-efficiency. 4 Wide application. mill,machine,grinding millEfficient crushing-type mills are widely used in metallurgy, mining, chemical, cement, ... discharged, the unbroken rest will be left in the chamber to be crushed repeatedly by the hammers and iron plates ... not more than 5%..The performance parameters of efficient crushing-type mills:ModelPC4008-75PC4012-90PC4015-132Diameter of the rotor (mm ...