the 6FDSeries of complete flour mill units are designed on the base of the original 6FY series of flour mills by adding air elevators.
  the units have the following advantages:
I) Feeding wheat grain, collecting flour, and collecting the bran are all carried on over the ground, so it is very convenient for the four milling operation.  
Ii) Raise the flour mill's mechanization degree, cut down operator's labour intensity.
Iii) Adopt compressed air to transport grain. for seal pipes strictly, thus prevent flour from releasing efficiently, cut down powder's pollution greatly.
IV) Drop down the finished production's temperature and mill grain again and again, thus improve the flour's quality greatly.
V) We can use it to mill wheat, sorghum, coffee, cocoa and other grains, also to mill chemical particulate materials