Apollo Continuous Asphalt-Mixing Plants, CounterMix 90–120, DrumMix 60–120

New technology for the drum mixing

The new Counter flow technology continuous drum mix plant is setting new standards for asphalt mix production in the 90–120 t/h output classes. The prime benefits of the plant are fuel efficiency, low carbon foot print, environment protection and facility to add RAP.

Efficient counter flow drum

The heart of this plant is a high efficiency counter flow drier drum with a matched fully modulating long nose burner.

In conventional continuous mixing plant the parallel flow heat transfer technology is used where in the material to be heated and the hot gases flow parallel to each other in the same direction. In a counter flow drier drum, the material
to be heated and the hot gases flow contra to each other meaning in opposite directions.

This is highly efficient heat transfer system to maximize the transfer of heat from hot gases as well as radiation heat from the burner flame to the aggregates. And the spraying of bitumen and filler is done when the hot aggregates pass behind the burner in the same drier drum.

The plant overview

The plant has cold feeder, counter flow drier drum unit, efficient bag house, load out conveyor, bitumen tank and mineral filler silo. It also offers host of options from the simplest basic plant to more sophisticated advanced version depending upon the customer needs.

Pre-feeders

Compact and modular standard four bin feeder ensures quick transport and erection. With the sufficient storage of 8 m³ per bin, the quality of a mix is decisively influenced right from the feed stage. Frequency controlled feed regulating conveyers extending upto drum inlet chute ensures hassle free conveyance accompanied by simple calibration system.

Its low tipping height can help eliminate the need of construction of expensive full ramps and one can work with a loader and small ramp. All Shaft mounted geared motors ensures low maintenance and high energy efficiency.

Oversize removal vibratory screen The drum hot mix plant is supplied with oversize removal vibratory screen for protection of drum. Any oversize material,

detrimental for the heating and mixing thermodrum internals, are screened out ensuring better performance and safety of the plant.

Oversize removal vibratory screen

The drum hot mix plant is supplied with oversize removal vibratory screen for protection of drum. Any oversize material, detrimental for the heating and mixing thermodrum internals, are screened out ensuring better performance and safety of the plant.

Counterflow continuous dryer

Special design continuous drier drum with counterflow heat transfer technology yields significant fuel efficiency and much better pollution control. The drum is fitted with a long nose fully modulating burner extending inside the drier. The flight arrangement in the drum will be classified as Loosening zone, Convecting zone, Radiating zone in front of the burner flame and mixing zone behind the burner flame. The unique flight design ensures total heat transfer, a through mixing & coating, lower emissions and prevention of bitumen oxidation.

Four friction drive through shaft mounted gear motors, sufficiently sized drier rings with robust leaf supports, covered material inlet section to minimize dust suction makes it a very powerful and compatible to perform in diverse climatic conditions. In addition, one can choose an optional feature of 25 mm thick cerawool insulation to cope with very cold climatic conditions.