Pin mills are mechanical impact mills utilized for fine and ultra-fine grinding of a vast array of materials, consisting of minerals, chemicals, food, and pharmaceuticals. The term "pin mill" stems from the fact that the grinding components include pins or poles that are carefully spaced and placed on a central http://www.harrika.fi/wiki/index.php?title=Spiral_Jet_Mill_vs._Turbo_Mill:_Efficiency_Showdown_92877