The double-drum mixing equipment is one of the asphalt mixing equipment. It is conceived according to a brand-new continuous mixing process. It cleverly combines the advantages of intermittent and roller mixing equipment to avoid their respective shortcomings . So what are the characteristics of this novel continuous mixing process? This article focuses on introducing you.
Process characteristics of double drum asphalt mixing equipment:
(1) The drying of cold aggregate is completely the same as the counter-flow method of intermittent equipment. It has a higher thermal efficiency than the co-current technology commonly used in drum-type equipment, and does not produce oil droplets. Too high, black smoke and other disadvantages, and can make the new aggregate heated to a high temperature of 37O ℃.
(2) The heat transferred from the hot gas to the outer shell of the drying cylinder will not be dissipated into the atmosphere. The thermal efficiency of the double-drum equipment is very high. It is not only superior to the co-current drying cylinder but also higher than the traditional Counter-current drying cylinder. The fuel consumption can be saved by about 10% compared with the drum type equipment.
(3) Asphalt, powder and various reclaimed materials and additives added to the double-drum equipment are directly added to the inner and outer cylinder interlayers equivalent to the "stirred pot", and will not be in contact with gas or flames, and there is no steam fractionation Environment, so the problems of asphalt aging, powder running and blue smoke of the drum-type mixing equipment have been completely solved.
(4) The forced stirring process is adopted. The large and shallow mixing zone, plus a mixing time of up to 60 to 90s, can fully mix the new aggregate, liquid asphalt, stone powder, and a variety of recycled materials and additives, so that the mixing quality is fully achieved. Asphalt mixture required by the specification.
(5) The double drum asphalt mixing equipment maintains the advantages of the drum type mixing equipment. There is no hot material hoist or huge mixing tower here. Its simple structure, light weight, and convenient installation and maintenance greatly improve the reliability of equipment work and reduce the workload of installation and maintenance operations.
At the same time, it also maintains the advantages of high productivity of the drum mixer. Not only does it greatly exceed the traditional batch stirring equipment in terms of the production capacity per metal capacity, but it is also superior to the latter in comparison with the drying cylinder of the same diameter.
In addition to the above advantages, the potential advantages of the double-drum asphalt mixing equipment in terms of development prospects are also very obvious. First of all, the double-drum mixing equipment has huge potential advantages in improving production capacity and reducing manufacturing costs. The second is in the field of cost of use.
Due to the savings in maintenance costs, fuel costs, depreciation costs, etc., the cost of each ton of mixed material produced by the double-drum mixing equipment is about 10% lower than that of the batch mixing equipment. Finally, the most important potential is the ability of the double drum mixing equipment to accept a high proportion of recycled materials, which can hold up to 50% to 60% of recycled materials.
