Stationary Asphalt Plant

Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
Stationary Asphalt Plant
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Asphalt Mixing Plant

Description

The stationary asphalt plant is a kind of intermittent mixing plant. It adopts modular design and consists of feeding system, drying system, screening system, mixing system, powder recycling system, finished product storage system, etc., which makes it convenient to install and disassemble. New materials can be feed in the plant only after one batch of asphalt was already mixed up. With a large output, the plant is an ideal mixing system for road maintenance projects, building construction projects, water conservancy construction projects and so on.

Compared with the continuous mixing plant, the stationary asphalt plant has more processes including hot aggregate lifting, screening, secondary measuring and so on. At the same time, the quality and asphalt formulation can be controlled and adjusted at any time by the mixing plant.

Flow chart
Working process
  • Different sizes of aggregates are conveyed by belt to the screening equipment, then the bulk materials are removed, and the fine materials are transported to the drying cylinder through the belt conveyor.
  • The fine materials are heated and then lifted to the vibrating screen by the hoist. After screening, the materials of different sizes enter the corresponding hot material bin for use.
  • Fine materials are measured in proportion according to the formula and then enter the mixing cylinder; meanwhile, the powder is measured from the powder bin and then spirally conveyed to the mixing cylinder.
  • The asphalt is measured and sprayed to the mixing cylinder to mix well with the aggregates and powder, and the finished product is produced.
Components

1. Cold aggregate feeding system
★ The belt is controlled by variable frequency speed governor and can be operated in the operating room, which is convenient and intuitive, providing a better adjusting precision of the operator.
★ Alarm devices are installed at each outlet of the system to inform the material shortage or material blockage in time.
★ Each inlet is equipped with screen mesh to avoid the entry of large size materials into the system, which not only saves fuel, but also effectively prolongs the service life of drying cylinder, hoist and vibrating screen.


2. Aggregate drying system
★ A negative pressure gauge is arranged at the smoke treating part of the drying cylinder, so the combustion system is always in the best condition.
★ Light oil or heavy oil is used as fuel. The dual ignition design makes the combustion stable and full.
★ The friction drive mode is driven by four motors simultaneously, which makes the driving stable and the noise small.
★ The cylinder shell is stainless steel with cotton rock material insulation layer added, which makes it has good oxidation resistance and corrosion resistance.


3. Aggregate screening and metering system
★ Aggregate adopts four-point structure sensor to measure the force, asphalt and powder use three-point structure sensor to measure the force. after the sensor signal processed by the electronic scale and computer, the weighing value will be digitally displayed.
★ The screen is made of high strength manganese steel, with an arch-like cross-section, high in the middle, slightly lower on both sides, which is beneficial to enlarge the contact area of material.
★ The drawer type design makes the screen convenient to replace.
★ The system adopts special structure to make the bearing always immersed in the oil and get sufficient lubrication, which greatly improved the service life of the bearing and reduced the failure rate.


4. Mixing cylinder
★ The liner and blade of the mixing cylinder are chromium alloy castings with high wear resistance, which guarantees the long service life of the mixing cylinder.
★ Asphalt is sprayed by the asphalt pump on the aggregate surface evenly for easy mixing.
★ External oil heater is added to the mixing cylinder to ensure the temperature of special materials, such as modified asphalt, rubber asphalt, hot recycled materials and so on.


5. Control system
★ Monitoring system: real-time monitoring of the main parts of the mixing plant.
★ The production data and formula can be preserved for a long time. daily production data and production graphs can be displayed, viewed and printed to facilitate understanding of the daily production situation.
★ The remote service system greatly shortens the maintenance time, improves efficiency and reduces costs.


6. Dust recovery system

★ Two-stage dust removal mode
The first stage adopts a volute dust collector or a cyclone dust collector, which collects large dust grains and sends them to the hot aggregate hoist by a spiral conveyer for reuse.
The second stage adopts a high-pressure pulse bag filter with compartmented chambers, whose high-temperature resistant filter bag is made in the United States. It has good air permeability and a dust removal rate up to 99.5%.

★ Other optional dust removal devices
Dust collecting devices under the mixing cylinder and product bin, dust shield over the conveyor belt. They can further reduce the environmental pollution caused by equipment.


7. Finished product storage system

Heat preservation:
The upper parts are covered with colored steel plate and the outer rock wool plate. The lower part is insulated by heat conducting oil, covered by the rock wool plate and colored steel plate. The door is insulated by electric heating.

Optional Asphalt Plants

Xuetao has had a presence in the asphalt plant industry for more than 40 years, we are confident to provide you unique asphalt plant solutions based on your applications. Till now, we have constructed many asphalt mixing plants used in different industries. There are some asphalt plant examples available for your choice, which can be equipped with pulse bag filter or Venturi scrubber upon request.

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