Feldspar Types Of Mill. feldspartypesofmill 1 Potassium feldspar does not need to be broken If the grain size of potash feldspar is not very large and is less than 3 mm then potash feldspar does not need to be crushed at this time it can be used directly by the grinder of course the choice of grinder equipment you need to decide which type of grinder to choose according to the