APPARATUS FOR DISCHARGING BULK MATERIAL AND USE THEREOF IN A PROCESS FOR PRODUCING MELAMINE

摘要

An apparatus for discharging bulk material (1) from a container containing gas under excess pressure, the apparatus comprising a single-shaft screw conveyor (2), a purge tank (3) disposed downstream of the screw conveyor with the conveying tube (8) opening into the purge tank, and a closing cone (4) being shiftably mounted on its axis of symmetry and being pressed with a cone tip from outside into an outlet opening of the conveying tube (8), wherein the axis of symmetry of the closing cone coincides with the axis of symmetry of the conveying tube, the purge tank (3) including ports for a supply (10) and discharge of a purge gas stream (11) and an outlet opening for the bulk material (12).