THERMIX DRUM heats the aggregate in the heating zone as well as allowing homogenous mixing with the bitumen (asphalt) in a separate mixing zone. Aaspa high-efficiency 'THERMIX BRUM Long Nose Burner' is equipped with the facility that delivers high fuel efficiency with low emissions. The RAP collar attached to the 'THERMIX' DRUM can directly incorporate up to 30% of the RAP into the mixing zone. THERMIX DRUM The 'THERMIX' DRUM allows the re-incorporation of ingredients into the mixing zone.