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The Astec UniDrum is a high quality counterflow design that is offered in both portable and stationary arrangements as part of complete new plants and also for retrofit applications. Production capacities range from 200 to 600 tons per hour (182 to 544 tonnes per hour) with 5% moisture.
With an extra-long drum, the Astec UniDrum mixer is uniquely capable of producing quality hot mix at a high production rate with a high percentage of recycle. The extra-long drum length maximizes mixing and drying times to reduce fuel consumption and provide superior mixing.
Achieving a quality asphalt pavement requires mixing materials correctly, with consideration given to providing sufficient time for blending. The superheated virgin materials must have adequate mixing time with the recycled asphalt to bring it to temperature. The virgin aggregate, recycled asphalt and shingles, additives, baghouse fines, and virgin liquid AC must all be blended thoroughly to ensure everything is well coated and the gradation is uniform. The mixing chamber in the Astec UniDrum mixer is an excellent mechanism to ensure adequate blending to achieve a quality mix.
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