Dry slag granulation system wherein slag stream falls non-concentric on rotary granulator

摘要

A dry slag granulation system comprising a slag granulation housing (40) forming an opening, a slag supply inlet (42) and a moveable directional granulator (8) to receive the slag. A controller is provided for controlling movement of the directional granulator (8) in response to signals received from an infrared sensor (49) directed at a region (61) of the opening. Preferably the slag stream pattern is kept within a 0-10% difference of an ideal proportion of slag covering a region of interest. The directional granulator (8) is a rotary atomizing granulator wherein the slag stream fall point is offset and non-concentric with the centerline axis of rotation. The system may further comprise air inlets (47) in the base and/or the roof of the housing, as well as a heat recovery mechanism connected to the air outlet (48). A method of operating the dry slag granulation system is also claimed.