... cooler,dust extractor and fansPlant Systems:The main production system of new-build pellet production line include: 1. ... storage,4.Drying chamber,5.High-pressure roller mill system(obligate),6.Proportioning chamber,7.Mixing chamber,8. ... and distribution system,10.Traveling grate-rotary kiln-Annular Cooler system,11.Main induced air system,12.Finished product storage, 13.Transportation system.