... structure easliy maintain and operate manufacturer 2012 Energy-saving Rotary Dryer,Machine Description of coal,gypsum rotary dryer:Rotary ... sealed circle . It has reasonable structure, high quality, and low energy cost. Being of excellent workmanship, it is ... which enables it to save 10-15% of energy and increase 10-15% of productivity compared with ... ×376050.7/67.8 2012 Energy-saving Rotary Dryer,Machine