Abstract: An incinerator system includes a main burner chamber and an afterburner or recirculating burner chamber which forms a kinetic venturi action to insure intermixing of burning gases for substantially complete combustion. The gaseous effluents from the main burner are caused to be rotated in a vortex or tornadic action along a substantial right circular cylinder secondary burner chamber while a burner utilizing external fuel directs flame in the center of the tornadic flow as the effluents and burning gases move from one end of the secondary burner chamber to the other. A portion of the hot gases is recirculated into the main burner chamber.