Patent ID: 6685465
Filing Date: 2004-02-03
Classification: E01C

Abstract:
A drum heater having a rotary drum with a hot gas burner for insufflating hot gases into the rotary drum interior and delivery opening for the loose material to be processed at the rotary drum inlet and outlet opening in the vicinity of the rotary drum end, characterized in thatthe hot gas is blown in from the rotary drum end in the direction of the rotary drum inlet and is diverted by a unipart or multipart hot gas conduit segment which is designed as one or more hot gas surfaces of impingement mounted solidly and extending from the rotary drum inner wall to the rotary drum center, are aligned against the direction of the hot gas flow and in the plan view of the rotary drum interior along the rotary drum linear axis or axis of rotation they together fill out at least 80% of the rotary drum interface.