... for NPK compound fertilizer plantTechnical parameters1.inner diameter of shell: φ3.9m2.length of shell: 30+1.2m3.production capacity: ... , low energy consumption, high productivity, and more.The working principles of this rotary dryer are as follows: its lifting plate ... with various other machines, such as fluidized bed furnace, double drum rotary dryer, cement production line, cement grinding plant, ...