PURPOSE: A biomass fuel dissociator is provided to enhance plastic separation efficiency and to improve selectivity. CONSTITUTION: A biomass fuel dissociator comprises: a first rotation member and second rotation member(125) wherein each rotates in parallel; a motor(130) which rotates the first rotation member; a power transfer member which transfers the torque of the first rotation member to the second rotation member; and a guide board(111,112) which is inclined in outer direction to prevent separation of biomass fuel to the outside.
