Asphalt Mixing Plant

Product Description

What is an Asphalt Drum Mix Plant?

An Asphalt Drum Mix Plant is a type of continuous asphalt production plant used for producing hot mix asphalt (HMA), essential for road construction and maintenance. Unlike batch mix plants, drum mix plants perform drying and mixing in a single drum, providing continuous and efficient operation.

Main Components

1. Cold Aggregate Feeder Bins

   • Stores different sizes of aggregates.

   • Controlled feeding via adjustable gates and conveyor belts.

2. Conveyor Belt

   • Transfers aggregates from bins to the drying drum.

   • Usually equipped with a weighing system for accuracy.

3. Drying & Mixing Drum

   • Core unit where aggregates are dried and mixed with bitumen.

   • Rotating cylindrical drum with burners to heat aggregates.

   • Continuous mixing process without interruption.

4. Burner Unit

   • Heats the aggregates in the drum.

   • Can use diesel, coal, natural gas, or other fuels.

5. Bitumen Tank

   • Stores and heats bitumen to the required temperature.

   • Bitumen is pumped into the drum for mixing.

6. Mineral Filler Unit

   • Adds fine material (like stone dust) to improve asphalt quality.

   • Often equipped with a screw conveyor for controlled feeding.

7. Dust Collection System

   • Ensures environmental compliance by controlling dust.

   • Typically includes a primary dust collector (cyclone) and secondary baghouse filter.

8. Control Panel / Cabin

   • Fully automatic or semi-automatic controls.

   • Allows operators to monitor and adjust plant functions.

9. Asphalt Storage Silo (Optional)

   • Stores the hot mix temporarily.

   • Keeps mix warm for loading into trucks.

Working Process

1. Cold aggregates are loaded into separate feeder bins.

2. Aggregates pass through the conveyor to the drum.

3. The drum, with a burner, dries and heats the aggregates.

4. Heated aggregates mix with bitumen and filler in the drum.

5. Ready hot mix asphalt is discharged into trucks or stored.

Types of Drum Mix Plants

• Stationary Drum Mix Plant Fixed installation, suited for long-term projects.

• Mobile Drum Mix Plant Easily transportable, ideal for remote and short-term projects.

Capacity Range

• Small: 2030 TPH (tons per hour)

• Medium: 4060 TPH

• Large: 90120+ TPH