The drying drum is driven by four motors and hard-tooth reducers, which is connected with four supporting wheels and operated by friction. It has the feature of compact structure, smooth transmission and high transmission efficiency. A variety of scrapers for heating exchange are distributed in the drum so that aggregate can be fully heated. The burner combusts diesel, heavy oil and natural gas. Medium atomization technology is used to adapt to bad fluid fuel and adjust the ratio to 10:1. The burner has the feature of energy saving, low noise and full automatic control.