Secondary grate for rotary combustor

摘要

In a combustor assembly having a main water cooled rotary combustor in which material is burned and which discharges into a furnace, a generally cylindruical secondary grate formed of water cooled pipes positioned in the furnace for receiving and holding material discharged from the main combustor so as to complete the burning while the secondary grate is slowly rotated to eventually discharge ashes and unburnable material from the furnace.