Pulverizer with output flow control and methods for controlling output flow in a pulverizer

A pulverizer comprising:

• a housing having top and bottom ends, the housing further having an inlet located towards the top end for receiving input material to pulverize and an outlet located towards the bottom end for discharging pulverized material from the housing, the housing including a housing sidewall extending between the top and bottom ends and defining an interior chamber, the housing having a central housing axis;
• a rotatable shaft extending between the top end and the bottom end of the housing along the central housing axis;
• a plurality of rotor hub assemblies mounted to the shaft, each rotor hub assembly including a rotor hub and a plurality of rotor arms extending outwardly from the rotor hub towards the housing sidewall for forming an airflow revolving about the central housing axis within the interior chamber when the rotatable shaft is rotated,
• wherein at least one of the housing and of one or more of the rotor hub assemblies is selectively reconfigurable between a plurality of configurations to adjust at least one parameter of an output flow of the pulverized material at the outlet, wherein the housing includes a discharge portion located at the bottom end thereof, the discharge portion including a discharge portion sidewall defining a discharge chamber portion of the interior chamber, the discharge chamber including a circular chamber portion extending substantially concentrically around the shaft and a discharge conduit extending substantially tangentially to the circular portion to discharge pulverized material from the circular portion, the discharge chamber being configured so as to provide a predetermined shape of the output flow.