Principle:
Rotating shell keeps the material under tumbling motion. When the material approach the mid-point of the shell, another set of baffles causes part of the material to move towards the direction of inlet end allowing the remaining part to move forward. This process continuous up to discharge end, while another set of baffles guide the material to the discharge port.
Construction:
Resembles large cement mixer.
Baffles are fitted to the inner surface of the shell.
Shell is fixed to a shaft, which is allowed to rotate using electrical power.
Side openings are provided on each side for charging and discharging of the material.