Burn pot for particulate combustors

In a particulate fuel burner:

• a firebox defined by firebox walls;
• a particulate feeder for dropping particulate fuel into the firebox;
• a burn pot body including a bottom wall, a front wall, and side walls joined to a front wall and bottom wall, defining a combustion bowl area, wherein the side and front walls include upper edges, for receiving particulate fuel dropped by the particulate feeder;
• a bracket on one of the firebox walls releasably supporting the burn pot body to receive particulate fuel from the feeder;
• a back wall slidably mounted within the burn pot body adjacent to the side and bottom walls and facing the front wall;
• and
• a driver mounting the back wall to move the back wall in a reciprocating movement within the combustion bowl area along the bottom and side walls toward and away from the front wall, to engage and move particulates along the bottom wall and side walls toward the front wall and the discharge edge thereof.

A burn pot for particulate fuel, comprising:

• a burn pot body including a front wall, side walls joining the front wall, and a bottom wall joining the front and side walls;
• wherein the front wall is inclined away from the bottom wall and includes an upper ash discharge edge;
• and
• a back wall slidably engaging the side and bottom walls and facing the front wall for movement between the side walls and along the bottom wall toward and away from the front wall.