Astec Double Barrel® Drum Mixer

Overview

Sequential mixing ensures ingredients are added to the hot mixture in an order that allows better temperature equalization and even distribution of all particles throughout the mix.

The Double Barrel sequence begins when aggregate enters the drum from the conveyor and passes through the flop gate, which minimizes air leakage into the drum. From there, it passes through a series of veiling flights that transfer the heat from the burner to the aggregate. The aggregate then exits the inner drum, dropping down into the outer drum shell, where paddles sequentially mix in RAP, liquid AC, and dust/filler in a flame-free environment. In this zone, the constituents are mixed for the remainder of the drum length before exiting to the drag.

Astec Double Barrel Drum Mixer

Applications

  • An Astec relocatable M-Pack asphalt mixing plant

    Asphalt Mixing

    A thermal mixing process is required to turn aggregates and liquid AC into an asphalt pavement mix for road construction. This makes an asphalt mixing plant necessary for road construction. The complete line of Astec asphalt mixing plants, and its range of capacities and features, gives you the choices and flexibility to create your optimum solution.
    Learn More
  • Roadtec RX-700 cold planer milling asphalt off the road surface into a dump truck

    Recycled Asphalt Pavement

    The asphalt pavement industry has a long history of incorporating reclaimed asphalt pavement (RAP) into new asphalt pavement mix. In fact, Asphalt is America’s most recycled material making the asphalt industry is a leader in the use of recycled materials. Astec has a long history of building world-class tools to allow contractors and producers to collect and utilize this very valuable product. 
    Learn More

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Features

Specifications

UNITS:
Portable Drum Size (m)
Portable Mixing Chamber (m)
Portable Metric Tons Per Hour (MTPH)
1.8m x 10
5.8
181
2.1m x 11
5.8
272
2.4m x 11.6
6.4363

 

Portable Drum Size
Portable Mixing Chamber
 Portable Tons Per hour
6' x 33'
19'
200
7' x 37'
19'300
8' x 38'
21'400

 

Relocatable Drum Size (m)
Relocatable Mixing Chamber (m)
Relocatable Metric Tons Per Hour (MTPH)
1.8 x 10
5.8
181
2.1 x 11.6
6.7
272
2.4 x 12.2
6.9363
2.7 x 14.3
6.9454
3 x 15.2
6.9544

 

Relocatable Drum SizeRelocatable Mixing ChamberRelocatable Tons Per Hour
6' x 33'
19'
200
7' x 38'
22'
300
8' x 41'
22' 5"
400
9' x 47'
22' 5"500
10' x 50'
22' 5"600

 

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