Mobile Drum Mix Plant

GAJJAR Mobile continuous mix plants are highly versatile and adaptable, making them ideal for temporary construction projects and remote job sites. Mounted on trailers or skids, these plants can be easily transported to different locations, enabling on-site production of asphalt mix. Mobile continuous mix plants offer convenience and flexibility, allowing contractors to respond quickly to project demands and produce asphalt mix where and when it’s needed. They are commonly used for road maintenance operations, emergency repairs, and infrastructure projects in remote or challenging environments.

GAJJAR Mobile Asphalt Plants excel in scenarios where frequent site changes are necessary without compromising production quality. These plants are designed for maximum mobility, meeting the diverse needs of road contractors seeking high-quality machinery. The pre-wired chassis of the portable asphalt mixing plant ensures quick installation and start-up. Notably, it requires no or very little foundation

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Mobile Drum Mix Plant

CONTINUOUS ASPHALT MIXING

Capacity range:
20 TPH TO 160 TPH

Exceptional
Pavement Mix Output

HIGHLIGHTS

Highly mobile, compact plants
Low transportation cost and ease of installation
Our prewired chassis offers full mobility, featuring components like a junction box, kingpin system, and pneumatic braking on each chassis.
Excellent mixing performance and quality
Clearly separated heating and mixing process
Mixing time can be adjusted based on recipe and capacity
With our complete package, you can start producing hotmix asphalt promptly

Working Principles

1. Weighing Virgin Aggregates:

The virgin aggregates (such as sand, gravel, and crushed stone) are individually weighed from the cold feed bins using a variable, continuous, and automatic belt speed. The proportions are determined by the control systems. Once weighed, the aggregates are transferred to the dryer via a charging conveyor.

2. Drying and Heating:

The aggregates enter the primary zone of the drum mix plant, where heat from the burner dries and heats them. Next, the aggregates move to the secondary zone, where asphalt is added. Here, the aggregates and asphalt are thoroughly blended. Continued drying also occurs in the secondary zone.

3. Aggregate Flow and Mixing:

Drum mixers are equipped with flights (internal paddles) that direct the aggregate flow and spread the aggregates across the cross-section of the drum. The aggregates must not only rotate with the revolving motion of the drum but also spread out sufficiently. This ensures quick and efficient heating and drying of all particles.

4. Continuous Asphalt Production:

The drum mix plant produces the asphalt concrete mix continuously. To manage this continuous flow, a temporary holding bin or surge silo is used. Various conveying devices can transport the asphalt concrete from the discharge end of the drum mixer to the holding bin or surge silo. Common means of transport include bucket elevators, drag slat conveyors, and belt conveyors.

Key Components of Asphalt Drum Mix Plant

The aggregate feeding bins in Gajjar Asphalt Mixing plants are equipped with variable speed drive motors and gearboxes for each bin. These motors allow precise control and regulation of the aggregate flow individually, enabling the addition of the required proportions of individual aggregates according to the mix design.

The drying and mixing drum in a hot mix plant is a critical component. As its name suggests, it performs the task of drying the aggregates as they enter the drum. Later in the process, the aggregates are effectively mixed with bitumen and other minerals. The drum is equipped with specially designed flights that thoroughly treat each type of aggregate during the drying process. These flights also facilitate uniform mixing with bitumen and other minerals.

Gajjar makes asphalt drum mix plant features an efficient, low-noise burner that can operate using diesel, LDO (Light Diesel Oil), and furnace oil (optional). This maintenance-free burner produces a strong flame, effectively heating the aggregates to their maximum temperature. By continuously reducing the aggregate moisture content, the burner ensures optimal production. The burner uses a two/three nozzle type pressure jet system with high- low intensity. This design enhances fuel efficiency.

The load-out conveyor serves to discharge the hot mix material into a truck. At the other end, it is equipped with a GOB (Gate-Operated Bin) hopper. The GOB hopper helps control the segregation of the mixed asphalt. It is beneficial to have hydraulically operated gates for efficient operation.

Asphalt storage tanks come in cylindrical O-shaped or U-shaped designs. These tanks are insulated with 50 mm thick rock wool to prevent heat loss and reduce burner fuel consumption. They are mounted on a sturdy full chassis. The standard package includes an automatic pressure jet oil burner, a bitumen pump with a jacketed oil body, and a bitumen metering system with a variable speed motor and hot oil circulation motor.

Available Models

MODEL	MDMX-30	MDMX-40	MDMX-50	MDMX-60	MDMX-65
RATED OUTPUT @ 3% moisture content	20 – 40 TPH	40 - 60 TPH	60 - 90 TPH	90 – 120 TPH	120 – 160 TPH
MOBILITY ARRANGEMENT
Chassis 1	Bin Feeder, Dryer, Venturi Pollution Unit	4 Bin Feeder	4 Bin Feeder	4 Bin Feeder	4 Bin Feeder
Chassis 2	Bitumen Tank, Fuel Tank	Dryer with Pollution Control Unit	Dryer with Pollution Control Unit	Dryer with Pollution Control Unit	Dryer with Pollution Control Unit
Chassis 3	Prewired Control Panel with Cabin and Genset (Optional)	Bitumen Tank, Fuel Tank	Bitumen Tank, Fuel Tank	Bitumen Tank, Fuel Tank	Bitumen Tank, Fuel Tank
Chassis 4	NA	Prewired Control Panel with Cabin and Genset (Optional)	Prewired Control Panel with Cabin and Genset (Optional)	Prewired Control Panel with Cabin and Genset (Optional)	Prewired Control Panel with Cabin and Genset (Optional)
Standalone Components	Load Out Conveyor, GOB Hopper	Load Out Conveyor, GOB Hopper, Filler Unit	Load Out Conveyor, GOB Hopper, Filler Unit	Load Out Conveyor, GOB Hopper, Filler Unit	Load Out Conveyor, GOB Hopper, Filler Unit

NOTE: The plant’s production rate can vary depending on the following factors: aggregate moisture, the altitude where equipment is installed, the percentage of fine aggregates in the mixture, mixture temperature, fuel’s calorific power, and the specific weight of the aggregates.

Per GAJJAR’s policy of constant upgradation of products, specifications are subject to change without prior notice.

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