The old material is heated and added to the mixing pot In order to improve the proportion of fresh raw materials to recycle old materials, on the basis of forced intermittent asphalt mixture mixing equipment, a set of special heating drums for the old materials is added, and the old materials are heated and then added directly to the mixing pan. The proportion of the old material in the way of reproduction can theoretically reach 50%, but the usual regeneration ratio is controlled at 30%. Because there are many reasons, the regeneration must control the heating temperature of the new aggregate, or easy to make the aging of the asphalt; new aggregate heating temperature is too high will also make its performance. The development of continuous drum asphalt mixture mixing equipment can be divided into three stages of development: the middle of the drum to join the old material of the single drum recycle mixer, continuous drum asphalt mixture mixing equipment on the aggregate heating drying and asphalt mixing In the same drum, the old material from the middle of the drum to join, after the old material into the heated and new aggregate mixing, while continuing to heat exchange with the hot air. road maintenance equipment and services inc asphalt pavement replacement cost soil compactor for sale thermal regeneration wholesalers