Librixer comminutor and particle air classifier system

A discharge arrangement (120) for a comminution reactor assembly (100), the discharge arrangement (120) comprising a main chamber (202) extending along a main axis (124), the main chamber having an inlet (121) arranged to be fluidly connected to a comminution reactor (110) and an outlet (122) arranged opposite from the inlet (121) along the main axis (124) and closeable by a common material take-out valve (204),

• wherein the main chamber (202) is arranged to support a fluid-material stream (123) along a helical path about the main axis (124) from the inlet (121) towards the outlet (122),
• the discharge arrangement (120) further comprising an airduct (206) arranged extending into the main chamber (202) at an acute angle (a) with respect to the main axis (124), the airduct (206) comprising an aperture arranged facing the outlet (122), the airduct further comprising a bend (210) to change an extension direction of the airduct (206) into a direction substantially parallel to the main axis (124),
• whereby a portion (125) of the fluid-material stream (123) changes direction from the helical fluid-material stream (123) about the main axis (124) from the inlet (121) towards the outlet (122) to a helical flow inside the airduct (206).