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What You Should Know About an Asphalt Mixing Plant

Asphalt Mixing Plant

A Asphalt Mixing Plant is an important piece of equipment used to create a new pavement. The plant is comprised of several components, including a hot aggregate and weighed bitumen. The hot aggregate and bitumen are then mixed together using a mixer machine. A typical asphalt mixing plant has a capacity of 5,000 tons per hour.

Common components

An asphalt batch mixing plant is a machine that mixes and pours asphalt into a truck. Its operation begins with the feeding of raw aggregates into the feeder bins. Then, the aggregates are transferred to a dryer drum fitted with a burner. The dryer has a lift mechanism to evenly distribute the temperature of the aggregates and helps in getting rid of moisture from them.

An asphalt batch plant is an ideal option for smaller jobs and is highly portable. It does not require a foundation and can be moved to different sites quickly. It can produce all types of mixtures. It is also portable, with foldable legs. It is suitable for medium-sized and small-scale road construction projects.

An asphalt mixing plant includes a feeding bin, mixing units, bucket elevators, and storage tanks. It also has a control cabin. All types of asphalt plants have a similar set of components, but they use different operating systems. Depending on the size of the plant, it can produce as much as 140 tonnes per hour of asphalt.

The mixing process is controlled by a control panel. There are two types of continuous mixing plants: counter-flow and parallel-flow. Counter-flow plants have the advantage of consuming less gasoline Gypsum production line and producing more HMA. Counter-flow plants can be used for high-volume production. The ADM EX10248 is an example of a counter-flow drum-mix HMA plant. Its production capacity is 120-425 TPH and comes in ski-mounted, relocatable, and portable versions.

Another important component of an asphalt plant is an asphalt drum. The drum is where the hot asphalt is pumped. This is also called a hot bin. When aggregates are released into a drum, bitumen is released, and the drum is then used to mix the asphalt. The drum also releases optional materials such as filler or binder. In addition, air pollution control devices are used to control the level of dust and other harmful gases in the atmosphere. They include a bag filter and a wet dust scrubber.

Working procedures

There are many things that should be considered while working on an asphalt mixing plant. These machines have a range of different components and require a lot of co-ordination, balance, and maintenance. With a little caution and management, you should be able to achieve the best results from your asphalt plant. It is also important to monitor the quality of the materials used. There should be daily, weekly, and monthly checks on all materials used in the asphalt plant.

The first step in the process is determining the consistency of the material. This is done by testing the materials and their proportions. Another step in the process is to test the cohesion of the asphalt. This measure can be done with a cohesiometer or a stabilometer. Both of these instruments can be used to determine how much material needs to be added to achieve the desired degree of stability.

There are two basic types of asphalt mixing plants: continuous type and batch type. Both types use a computer monitor located at the operator’s table. A computer with Windows operating system controls the entire plant. It is designed to be user-friendly and functional, and its main program is easy to understand and operate. The computer also stores a database of plant operations. Using this information, you can control the aggregate bitumen temperature, the flame amount percentage, and the damper opening percentage. You can also control the dosing velocities.

After the aggregates have been weighed, the next step is the application of bitumen. The hot asphalt is then applied to the road, and is generally loaded into tucks or temporary storage silos. The asphalt is monitored using a computerized panel. The hot aggregate bucket elevator is an extended, covered structure with multiple buckets connected to a chain system. When the aggregates are heated, they are then transported to the top of the bucket elevator, where they are mixed with the bitumen and filler material. When the aggregate is mixed with the bitumen, the hot mix asphalt is released.


Several challenges exist in the manufacturing of asphalt. Water sensitivity is one. Insufficient blending of virgin and aged binders can result in the mixture being too water-sensitive. Other problems include rutting and permanent deformation. Additionally, incompatible agents may cause the mixture to flush out.

As more reclaimed asphalt pavement (RAP) is used in asphalt mixes, new challenges emerged. Successful inclusion of RAP requires a high-temperature process that transfers heat to virgin aggregate before RAP is added. However, this process produced a high level of pollutants, including heavy hydrocarbons and particulates. This has created a need for modifications to the plant’s design.

Despite the challenges, it is important to remember that the RAP content should meet the same performance standards as virgin aggregates. This means that the mix design should be based on volumetric and mechanical properties, and be suited for the particular application. Although the end goal may not change, existing procedures should be adjusted to accommodate the new mix design. For example, a lower virgin binder grade may be used to account for RAP aging.

The stiffness of final asphalt mixes may also be affected. RAP-based mixes may be less rigid than their virgin counterparts, but the percentage of recycled aggregates in the mix is still low. The presence of aged binder can reduce water damage and prevent permanent deformations. If the RAP content is too high, it can cause rutting and fatigue.


Proper maintenance is essential for any asphalt plant. While asphalt plants used to be manually operated, new technology Gypsum production line has improved the tracking and scheduling of maintenance. These new systems help asphalt plants recover more quickly from downtime. Regular inspections of equipment parts and scheduled maintenance will ensure a healthy asphalt plant that produces a high-quality product. By developing a strong maintenance culture in your asphalt plant, you will be able to minimize downtime and increase profits.

In addition, the electrical system of your asphalt mixing plant needs to be maintained. In order to prevent electrical malfunctions, you need to check for faulty fuses, which can cause the production to stop. You also need to check the electrical components, such as the motor starter and the pull-in coil. You should also check the shaft seal, case gaskets, and pipe connections. If your asphalt mixing plant uses a belt drive, make sure you have a guard on the discharge door.

Asphalt mixing plants are complex, integrated mechanical and electrical equipment, and must be maintained regularly. Because of their heavy usage, they require frequent inspections and repairs. A maintenance schedule should involve daily, weekly, and monthly inspections of all components. When possible, it is also important to check the quality of all materials used.

Ensure that your asphalt mixing plant is located in an area where raw materials are plentiful and easy to transport. It should also be situated near a highway or expressway for easy access to customers and workers. Finally, always keep in mind the latest trends in the market. It is important to analyze the future development direction of the asphalt industry and make improvements in your plant’s performance.