Asphalt Processing

As a professional asphalt mixing plant manufacturer and asphalt pavement construction company in the road construction industry, we consistently strive for efficiency and precision.
Our asphalt mixing plants utilize advanced dual-circulation, fluidized bed mixing technology. The mixing blades are arranged in an intermittent spiral pattern, achieving large axial circulation, small radial circulation, and central vortex mixing, ensuring a more uniform mixing of materials.
Ultra-precise metering technology reduces aggregate metering errors to 20kg, powder metering errors to 1kg, and the asphalt-to-stone ratio deviation of the mixture to less than 0.1%.
Our experienced construction team rigorously controls every process, from base preparation to asphalt paving and compaction, adhering to strict standards and specifications to ensure a smooth, durable, and high-quality asphalt pavement.

An asphalt mixing plant, also known as an asphalt concrete mixing plant or asphalt concrete mixing plant, is a set of machinery designed specifically for the large-scale production of asphalt concrete. Based on their mixing method, these plants can be categorized as forced batch and continuous production. Based on their handling method, they can be further divided into fixed, semi-fixed, and mobile types.
I. Main Application Areas of Asphalt Mixing Plants
An asphalt mixing plant, also known as an asphalt concrete mixing plant, is a piece of machinery designed specifically for the large-scale production of asphalt concrete. It can produce asphalt mixtures, modified asphalt mixtures, and colored asphalt mixtures, and is an indispensable key piece of equipment in the construction of infrastructure such as expressways, graded highways, municipal roads, airports, and ports.
II. Overall Structure of an Asphalt Mixing Plant
The key equipment of an asphalt mixing plant includes a batching system, drying system, combustion system, hot material elevator, vibrating screen, hot material storage silo, weighing and mixing system, asphalt supply system, powder supply system, dust removal system, finished product silo, and control system, among other components. These components work together to ensure efficient and high-quality production of asphalt mixtures.
III. Classification of Asphalt Mixing Plants.
(I) Based on production capacity, asphalt mixing plants can be divided into small, medium, and large categories. Small mixing plants have a production capacity of less than 40 tons/hour, medium mixing plants have a production capacity between 40 and 400 tons/hour, and large mixing plants have a production capacity exceeding 400 tons/hour.
(II) In addition, asphalt mixing plants can be divided into mobile, semi-stationary, and fixed types based on their transportation method. Mobile mixing plants have silos and mixing pots equipped with tires, making them easy to move with the construction site. They are mainly suitable for county and township roads and low-grade highway projects. Semi-stationary mixing plants have equipment mounted on trailers and assembled at the construction site. They are mostly used in highway construction. Stationary mixing plants, also known as asphalt concrete processing plants, have equipment located in a fixed location and are suitable for centralized projects and urban road construction.

Today, the editor of our large-scale (removable) asphalt mixing plant will introduce the daily maintenance of asphalt mixing equipment. Interested parties, join us for a discussion!
Before starting the machine, clear any loose materials near the conveyor belt. Start the machine with no load, and only operate it under load after the motor is operating normally. During loaded operation, a dedicated person should inspect the equipment, adjust the belts promptly, and observe the equipment’s operating status for any unusual noises or abnormalities, as well as ensure that exposed instrument displays are functioning properly.
If any abnormalities are detected, the cause should be promptly identified and corrected. The equipment should be inspected and maintained after each shift. Lubricate hot moving parts after each shift. Clean the air filter and air-water separator filter in the air compressor. Check the oil level and quality in the air compressor and reducer. Adjust the tension of the belts and chains, and replace them if necessary. Clean dust from the dust collector and any debris and waste on the site to keep it clean and tidy. Problems identified during inspections should be completely corrected after the shift, and operational records should be kept to ensure the overall condition of the equipment.

To extend the service life of the dust collector bag in the asphalt mixing plant, maintenance can be carried out from the following aspects:
Daily operation and maintenance
Control operating parameters: strictly control the operating temperature, pressure and air volume of the dust collector to avoid excessively high or low temperature, excessive pressure fluctuations and air volume overload. Generally speaking, the operating temperature of the dust collector in the asphalt mixing plant should be controlled between 120℃-180℃.
Regularly check the cleaning system: ensure the normal operation of the cleaning device, such as the pulse valve, cylinder and other components are fault-free, and the cleaning time and cycle are set reasonably. Regularly check the pressure of the pulse injection system to ensure that the injection pressure is between 0.4-0.6MPa to achieve the best cleaning effect.
Timely deal with leakage problems: Regularly check the sealing of the dust collector, promptly discover and repair leakage points in pipes, flanges, inspection doors and other parts, and prevent dust-containing gas from short-circuiting and wearing the bags.
Regular maintenance
Check the appearance of the bag: Open the dust collector inspection door regularly to check whether the bag is damaged, deformed, blocked or stuck. If a small area of individual bags is found to be damaged, they can be repaired in time; if the damage is serious, new bags need to be replaced.
Clean the surface of the bag: According to the blockage of the bag, compressed air can be used regularly for reverse blowing and cleaning, or special cleaning equipment can be used to clean the surface of the bag to remove dust.
Replace wearing parts: Other wearing parts of the dust collector, such as the filter bag frame, venturi, etc., should also be checked and replaced regularly to ensure the overall performance of the dust collector.
Storage and installation
Proper storage: Unused bags should be stored in a dry and ventilated environment to avoid moisture, rain and direct sunlight to prevent aging of the bag material.
Standard installation: When installing the bag, be careful to avoid contact between the bag and sharp objects to prevent scratches. At the same time, ensure that the bag is firmly installed and well sealed with the flower plate hole to prevent the bag from being worn or falling off due to looseness.

With increasingly stringent environmental protection policies, asphalt mixing stations face severe challenges such as excessive dust and exhaust gas emissions. How to achieve standard production through efficient and environmentally friendly transformation while controlling costs? This article will reveal three core transformation plans to help mixing stations achieve a direct reduction of more than 80% in emissions, combining economy and compliance!
1. Dust control: Upgrade pulse bag dust removal system
Traditional dust removal equipment is difficult to cope with high humidity and high viscosity dust in asphalt stations, which can easily cause filter bags to compact. The transformation plan includes:
Filter material upgrade: Use oil-proof and waterproof coated filter bags, which can withstand 240℃ high-temperature asphalt flue gas and extend the service life by 2 times.
Intelligent cleaning: Equipped with a 0.5MPa high-pressure pulse backflush device, the cleaning frequency is automatically adjusted according to the pressure difference, and the dust capture efficiency exceeds 99%.
Seal transformation: Install double-layer soft curtain seals on dust-raising points such as silos and conveyor belts to reduce unorganized emissions.
Transformation effect: dust emission concentration dropped from 100mg/m3 to below 10mg/m3, which is better than the national standard.
With increasingly stringent environmental protection policies, asphalt mixing plants face severe challenges such as excessive dust and exhaust gas emissions. How to achieve standard production through efficient and environmentally friendly transformation while controlling costs? This article will reveal three core transformation solutions to help mixing stations achieve a direct reduction of more than 80% in emissions, combining economy and compliance!

The asphalt mixing equipment mentioned here may also refer to an asphalt concrete mixing station. At present, asphalt mixing equipment generally uses a complete set of equipment for mixing. So what are the benefits of using a complete set of equipment?
1. More effective.
In today’s industrial production, a complete set of asphalt mixing equipment can help improve production efficiency and ensure product quality. This is why even in a mixing station, the equipment used is a complete set of equipment.
2. Ensure quality.
When mixing asphalt, a certain ratio is set. For this type of asphalt liquid used in different occasions, its ratio control has strict requirements. It is necessary to determine its mixing method and mixing time to ensure that the asphalt liquid is consistent with the production site. One of the advantages of a mixing station is that the quality can be effectively controlled.
3. It can be sampled.
After mixing at the mixing station, the quality inspector can sample and inspect to ensure that the mixed asphalt liquid meets the use requirements.
In short, asphalt mixing equipment will use a complete set of equipment, mainly to facilitate the later asphalt to meet production needs. Through the mixing station, the mixing time and feeding sequence can be better controlled, so that the mixed product can meet different use requirements. And after using the archiving equipment, effective spot checks can be carried out, which can better ensure that the quality meets the construction requirements.

During the asphalt mixing production process, dust pollution generated by overflow bins has always been a difficult point in environmental protection management. Traditional dust removal equipment often causes filter bag clogging and reduced efficiency due to the viscosity of asphalt fume. The “99% high dust removal rate + anti-adhesion filter bag” solution effectively solves this industry pain point by optimizing filter material and cleaning technology. This article will introduce its core technical features, selection points and maintenance methods in detail to help mixing stations achieve stable and standard emissions.
1. Industry emission standards and common problems
Environmental protection requirements The particle emission concentration must be ≤20mg/m3 (GB 4915 standard) The asphalt smoke emission concentration must be ≤40mg/m3
Some key areas implement stricter standards (such as ≤10mg/m3)
Pain points of traditional dust removal Asphalt dust adheres to the filter bag, making it difficult to clean the dust The wind resistance increases after the filter bag is compacted, and the energy consumption soars High-temperature flue gas causes the filter bag to deform and break
Key challenges It is necessary to deal with particulate matter and asphalt flue gas at the same time Adapt to intermittent high-concentration dust impact Ensure long-term operation stability

The country’s environmental protection requirements for road machinery construction products are becoming more and more stringent. my country’s asphalt mixers are mainly used for highway construction and maintenance, so the development of environmentally friendly products has become a top priority.
Using ergonomic design, improving the intelligence of operation, reducing noise and vibration, and paying attention to the appearance design requirements are higher. Unlike other construction machinery, most users are highway departments. The most important feature of these users is maturity, and they are familiar with domestic and foreign production and product technology strength. Foreign brands and a few domestic brands have been “deeply rooted in the hearts of the people” and have formed a brand effect. The brand competition among these companies is also quite fierce, especially the limitations of the scope of use and the similarity of technology, which makes companies only rely on product reliability and cost-effectiveness to compete.
Due to the cruelty of the market, small companies that are at a disadvantage in terms of scale, cost, technology, quality, and sales will no longer have room for survival, and some companies have been holding on to the local market will gradually disappear under the pressure of big brands. Unlike conventional products, it requires high professionalism to use, and users are generally more mature and have strong recognition capabilities. Therefore, even small private enterprises with so-called “institutional and cost advantages” are gradually shrinking their living space, and the trend of being eliminated is already obvious.

Asphalt mixing equipment is used to mass produce asphalt concrete. Due to the influence of various factors during the production and processing, the equipment will inevitably have some problems after a period of use. The editor of Wuxi Asphalt Mixing Equipment Company will introduce to you the methods of remediating damaged parts in asphalt mixing equipment. Asphalt mixing equipment encounters different problems, and its treatment and solution methods are also different. For example, one of the common problems of asphalt mixing equipment is fatigue damage of parts. At this time, the method to be done is to start from the production of parts. Improvement. Asphalt mixing station equipment can be improved by improving the surface finish of parts, or by using a relatively mild cross-section filtration to achieve the purpose of reducing the stress concentration of parts. Carburizing and quenching can also be used to improve the performance of asphalt mixing equipment. These methods can reduce the effect of fatigue damage of parts. In addition to fatigue damage of parts, asphalt mixing equipment will also encounter the situation of part damage caused by friction. At this time, wear-resistant materials should be selected as much as possible, and the possibility of friction should be minimized in the design of the shape of asphalt mixing equipment parts. If the equipment encounters parts damage caused by corrosion, then corrosion-resistant materials such as chromium and zinc can be used to plate the surface of the metal parts. This method can prevent the parts from corroding.

The additives in the production process of emulsified asphalt equipment can be divided into accelerators and retarders. In addition, the temperature and viscosity at that time need to be correctly controlled during production. How much do you know about this information? Let’s take a closer look:
The viscosity of asphalt decreases with the increase of temperature during the production of emulsified asphalt equipment. For every 12°C increase, its dynamic viscosity decreases by about one time. During production, the base asphalt should be heated to liquid state before emulsification. In addition, in order to adapt to the emulsification capacity of the colloid mill, the dynamic viscosity of the base asphalt is generally controlled to be about 200cst. The lower the temperature, the higher the viscosity, which increases the burden on the asphalt pump and the colloid mill, making it difficult to emulsify; but on the other hand, in order to prevent the demulsification caused by excessive vaporization and evaporation of water in the finished product during the production of emulsified asphalt, it is impossible to heat the base asphalt temperature too high. Generally, the finished product temperature at the outlet of the colloid mill should be controlled to be less than 85°C.
These are the main ways to control the temperature and viscosity of emulsified asphalt equipment during production. We must operate reasonably according to the instructions so that its performance can be fully demonstrated. If you have any questions, please feel free to consult us in time. We will continue to organize more information about emulsified asphalt equipment for you.

In fact, don’t be misled by the name. The asphalt mixing plant we are talking about here does not necessarily refer to simple asphalt mixing, but may also refer to asphalt concrete mixing, so it is actually a mixing plant. At present, asphalt mixing plants generally use complete sets of equipment for mixing purposes. The benefits of using complete sets of equipment are as follows.
1. Higher efficiency
For the current industrial production, complete sets of equipment can help improve production efficiency and ensure production quality. This is why even in mixing plants, the equipment used is mainly complete sets of equipment.
2. Ensure quality
When mixing asphalt, a certain ratio will be set. For this type of asphalt liquid used in different occasions, its ratio control has strict requirements. Only by ensuring its mixing method and mixing time can the asphalt liquid be ensured to be used in the production site. One of the benefits of a mixing station is that the quality can be effectively controlled.
3. Ability to perform random inspections
After mixing at the mixing station, relevant quality inspection personnel can conduct random inspections to ensure that the mixed asphalt liquid meets the use requirements.
In short, asphalt mixing plants use complete sets of equipment, mainly to facilitate the asphalt to meet production needs in the later stage. Using a mixing plant, it can better control the mixing time and the order of feeding, so as to ensure that the mixed products meet different usage requirements. And after using the archived equipment, effective sampling can also be carried out, which can better ensure that the quality meets the construction.

When it comes to asphalt mixing plants, I believe many people are familiar with them. Asphalt mixing plants are mainly equipment for producing asphalt concrete, they can achieve batch production and play an indispensable role in many port construction roads. Since the advantages of this equipment are very wide, there are still many precautions when using it. The following editor will briefly introduce to you what precautions are there when working in asphalt mixing plants?
1. Uniform dress
When working in an asphalt mixing plant, the staff must adopt uniform dress and customize special work clothes. If they are working outside the mixing plant or patrolling, they also need to wear safety helmets and safety protective gear. It is strictly forbidden to wear slippers to enter the workplace.
2. Warning
Before the mixing plant starts to operate, professional staff must pull the alarm to warn the surroundings. By warning, the information of starting work can be conveyed to the surrounding staff. For some irrelevant personnel, they should also stay away from dangerous places in time to avoid unnecessary accidents.
3. No open flames
When working in an asphalt mixing plant, the surrounding open flames must be extinguished and smoking is not allowed. If a problem occurs in the mixing station and maintenance is required, the maintenance personnel must wear safety belts before carrying out the maintenance.

1. Small asphalt mixing equipment should be set on a flat ground, and the front and rear wheel axles should be padded with square wood to fix the overhead tires to prevent sliding during use.
2. Check whether the transmission clutch and brake are sensitive and reliable, whether the connecting components are worn, whether the track pulley is outstanding, whether there are obstacles around and the smoothness of each part.
3. The rotation direction of the mixing drum should be consistent with the direction indicated by the arrow. If not, the motor wiring should be corrected.
4. Small asphalt mixing equipment should implement secondary leakage protection measures. Before use, the power should be turned on and the empty vehicle operation is qualified before it can be officially used. During the trial operation, the mixing drum speed should be checked to see if it is appropriate. Under normal circumstances, the empty vehicle speed is slightly faster than the heavy vehicle (after loading) by 2-3 revolutions. If the difference is large, the ratio of the driving wheel to the transmission wheel should be adjusted.
5. When stopping use, the power should be turned off and the switch box should be locked to prevent others from operating it by mistake.
6. When the concrete mixing is finished or it is expected to stop for more than 1 hour, in addition to draining the remaining material, pour stones and clean water into the shaking barrel, start the machine and run it, rinse the mortar stuck on the barrel and unload it completely. There should be no water accumulation in the barrel to prevent the barrel and blades from rusting. At the same time, the dust outside the mixing barrel should be cleaned to keep the machine clean and intact.
7. After starting the machine, always pay attention to whether the operation of each part of the mixer is normal. When stopping the machine, always check whether the mixer blades are bent and whether the screws are knocked off or loose.

When paving roads, asphalt is still needed, and special equipment is also needed when mixing asphalt. Among them, asphalt mixers can also be used with high efficiency, and have become a major equipment that construction units are concerned about. So what are the characteristics and advantages of such equipment, and in what aspects are they mainly reflected?
1. It is simpler and more convenient to use and operate
The current asphalt mixer equipment is still mainly designed in a modular way. It can be said that the design is more reasonable. This design method also makes the equipment easier and more convenient to carry and install. As long as it is on the construction site, it can be used well, and it can also be moved quickly, so that it can meet the needs of different scenarios.
2. Higher work efficiency
Not only that, the mixing blades of the asphalt mixer equipment itself are also very unique in design. It can be said that it is directly driven by power to and from Ancheng, so this design also makes the entire equipment safer and more reliable, and the work efficiency is also relatively high. Moreover, because the relevant motor vibration screen is used, the failure rate of the equipment is also reduced, so that the construction unit does not need to worry about the use of the equipment and can use it with confidence.
Nowadays, asphalt mixers can reduce floor space and ensure stability during operation. Therefore, when construction units use equipment, they still need to pay attention to multiple aspects, especially the use specifications of the equipment itself. These are all things that need to be paid attention to. Only in this way can the use effect of the equipment be ultimately ensured and the asphalt mixing work can be completed through this equipment.

The asphalt mixing plant is a complete set of equipment for mass production of asphalt concrete. The whole machine of the equipment consists of multiple systems, such as batching system, drying system, combustion system, powder supply system and dust prevention system. Each system is an important part of the asphalt mixing plant.
The working condition of the combustion system of the asphalt mixing plant has a great impact on the whole system, which is related to the economic efficiency of the whole system, temperature control accuracy and flue gas emission indicators. This article will briefly introduce how to judge the working condition of the combustion system of the asphalt mixing plant.
Generally speaking, due to the complexity of the detection equipment and methods, there are no conditions to achieve in the working process of most asphalt mixing plants. Therefore, it is more convenient to judge the working condition by a series of relatively intuitive factors such as the color, brightness and shape of the flame. This method is very simple and effective.
When the combustion system of the asphalt mixing plant is working, when the fuel is burning normally in the drying cylinder, the user can observe the flame through the front of the cylinder. At this time, the center of the flame should be in the center of the drying cylinder, and the flame is evenly distributed around it and will not touch the cylinder wall. The flame is full. The whole outline of the flame is relatively clear, and there will be no black smoke tail.
The abnormal working state of the combustion system includes, for example, the diameter of the flame is too large, which will cause serious carbon deposits on the furnace tube and affect the subsequent working state of the combustion system.

I. The basis for the classification of asphalt mixing plant models
The models of imported asphalt mixing plants are mainly divided according to the following three aspects:
1. Production capacity: According to the size of production capacity, asphalt mixing plants can be divided into small (30-60 tons/hour), medium (60-300 tons/hour) and large (300 tons/hour or more).
2. Functional characteristics: Different models of asphalt mixing plants have different functional configurations, such as asphalt batching system, interference screening system, thermal regeneration system and asphalt storage system, etc., to meet the needs of different road construction projects.
3. Additional equipment: According to customer requirements, imported asphalt mixing plants can also be equipped with additional equipment such as environmental protection equipment, intelligent control systems, oil storage tanks, etc., which will also affect the classification of models.
II. The difference and application scope of different models of asphalt mixing plants
1. Small asphalt mixing plant: suitable for smaller-scale road construction projects, such as community or village roads. Although the production efficiency is low, it occupies a small area and is affordable.
2. Medium-sized asphalt mixing plant: suitable for medium-sized road construction, such as county and township roads. Its production efficiency is high, it has certain requirements for the quality of raw materials, and the price is moderate.
3. Large asphalt mixing plant: suitable for large-scale construction projects such as highways and airports. The production efficiency is extremely high, and the requirements for asphalt materials are also higher, but it occupies a large area and has a high price.
In summary, the selection of a suitable imported asphalt mixing plant model requires comprehensive consideration of factors such as production capacity, functional characteristics and additional equipment, and selection and purchase according to the needs of the actual road construction project.

Asphalt mixing plant is an important production equipment for construction, and its production investment is relatively high. Therefore, during use, production is very important, but daily maintenance is also crucial. In addition to regular maintenance, daily maintenance is also indispensable. The editor of Tate Asphalt Mixing Plant shares several points of daily maintenance and regular maintenance;
Daily maintenance:
Clean the equipment after work every day, keep the inside and outside of the equipment clean, remove the mortar inside the equipment, clean the surface, check the oil gauge position every day, refuel as needed, and ensure reasonable lubrication. Special tools and accessories are customized for storage to prevent loss.
Start the equipment every day to run it idle for 10 minutes, and try to keep the fixed person and machine as still as possible, and do not change the operator at will.
Regular maintenance:
Check the bolts of the tile adhesive production line regularly (such as every month) for looseness.
Regularly change the lubricating oil.
Regularly check whether the pedal is firm.
Check whether the hoist belt is loose.
Regularly inspect and calibrate the packaging machine to see if it is qualified.

With the rapid development of highway construction, the requirements for construction equipment are getting higher and higher. Among them, asphalt mixing plants are one of the key equipment, and their performance directly affects the pavement quality of highways. Among the many asphalt mixing plants, continuous asphalt mixing plants have gradually emerged with their unique advantages.
In actual highway construction, continuous asphalt mixing plants have been widely used. For example, in a certain highway project, a continuous asphalt mixing plant was used to produce asphalt mixtures. By optimizing production process parameters and strictly controlling the quality of raw materials, the asphalt mixing plant successfully provided high-quality asphalt mixtures for the project. In the end, the project was completed on schedule, the pavement quality met the design requirements, and was highly praised by the owner.
In summary, continuous asphalt mixing plants can be fully used in highway construction. Its efficient and stable performance can not only meet the strict requirements of highway construction, but also improve construction efficiency and ensure pavement quality. With the continuous advancement of technology and the continuous expansion of market demand, the application prospects of continuous asphalt mixing plants in highway construction will be broader.

Due to the good reliability of asphalt, more and more fields have just begun to use asphalt as raw material for daily production and processing work; such as construction, urban roads, etc. In addition, the processing plant will humanize and manufacture asphalt according to customer requirements, and will use professional technical tools for asphalt mixing work. Compared with the application of old technical equipment, the new asphalt mixing equipment has stronger technicality and efficient operation speed. In addition, the equipment will use an automatic computer operating system to reduce redundant errors and reduce the working time of operators.
In addition, the processing plant will also mix and manufacture asphalt with higher precision asphalt mixing equipment, and only a small amount of raw materials and natural materials will be used for asphalt mixing and manufacturing; and it can reasonably control the quality of goods and improve the quality of goods.
Do you master the whole process of asphalt mixing equipment? The whole working process is a fusion of stone mixing, slag micro powder mixing and asphalt mixing. You can find a lot of detailed information below.

Now on the construction site, including in some engineering construction, one of the equipment used is asphalt mixing plant. It can be said that it can be used in many ranges and fields, and it can provide certain help for my country’s infrastructure construction. Of course, in the process of use, it is necessary to do a good job in many aspects, so that the use of mixing plant can be safer and more worry-free.
1. Maintain standardized operating procedures
In fact, it is not only in the use of asphalt mixing plant, but also in the use of other equipment. It should be done well. It can be said that this mixing plant will also have certain dangers. If there is any carelessness, it may also cause great losses. Therefore, at this time, it is still necessary to pay attention to the correct specifications and follow the process step by step. Only in this way can it be used safely and other use problems can be effectively avoided.
2. Adjust the reasonable mixing ratio
In the application of asphalt mixing plant, the most important and core step is the mixing. The mixing ratio of raw materials should be within a reasonable range and completed according to actual needs. Do not add or reduce raw materials at will according to your own wishes. Such operation is not standardized. In addition, after making a good ratio, you should also pay attention to safety protection measures during operation.
Asphalt mixing plant still plays an important role. If you want to make the use of the mixing plant safer and more worry-free, you should pay more attention when using it and have a certain understanding of these precautions. Only in this way can you ensure that there will be no other problems in use and ensure the safety of the mixing plant.

In the process of building and maintaining roads, road asphalt materials are an indispensable part. Asphalt, as a binder, can be used for various surface treatments, such as roads, parking lots, airport runways, etc. However, choosing the right road asphalt material for you is not an easy task. In this article, we will discuss how to choose the road asphalt material that best suits your needs.
1. Understand the types of road asphalt materials
First, we need to understand what road asphalt materials are available. According to the material properties and their application areas, they can generally be divided into the following categories:
(1) Conventional petroleum asphalt: It is extracted from petroleum and has strong durability and viscosity. It is often used in the surface layer of highways, urban trunk roads, etc.
(2) Modular asphalt: It is obtained by mixing conventional petroleum asphalt with other materials. It has better toughness and crack resistance. It is usually used for viaducts, large airport runways, etc.
(3) High temperature stabilizer modified asphalt: By adding high temperature stabilizers, the high temperature resistance of asphalt is increased. It is usually used in high temperature areas, such as roads in southern provinces.
(4) Polymer modified asphalt: By adding polymers, the toughness, crack resistance and durability of asphalt are increased. It is usually used in large parking lots, factory areas, etc.

Asphalt concrete, as the name implies, is a composite material formed by combining asphalt and concrete. Its main components usually include three categories, aggregate, filler and asphalt. Aggregate, as the basic skeleton of asphalt concrete, is mainly composed of crushed stones of different sizes. These crushed stones are carefully selected and proportioned to ensure the strength and stability of asphalt concrete. Filler usually refers to fine-grained materials such as stone powder, which are filled between crushed stones to increase density and improve overall strength. Asphalt is a binder that can tightly bond aggregate and filler together to form a solid whole. In the process of producing asphalt concrete, the proportion of various raw materials will be adjusted according to different formulas. These formulas are usually formulated according to the specific requirements of the road and the use environment to ensure that asphalt concrete can meet various complex road conditions. The place where this composite material is produced is a special asphalt mixing plant. This is an asphalt concrete mixing plant. The large trucks that we see every day to transport asphalt concrete come out from here. In the asphalt mixing plant, the entire production process is finely divided into multiple steps.
First, workers use loaders to deliver aggregates into cold silos. Cold silos are usually divided into several different chambers according to the size of aggregate particles, and each chamber corresponds to aggregates of different specifications. In this way, in the subsequent mixing process, the proportion of various aggregates can be accurately adjusted according to customer needs.
Next, these aggregates will be sent to the drying drum through a vibrating feeder and a belt conveyor. In the drying drum, the aggregates will be heated to a specified temperature by the high-temperature heat source provided by the burner. During this process, the spiral blades and sheep feed plates inside the drum will ensure that the aggregates are fully heated during rotation and remove the moisture in them. In this way, not only can the bonding strength between aggregates and asphalt be improved, but also the stability and durability of asphalt concrete after paving can be ensured.

The actual operation steps of drying drum of asphalt mixing equipment: 1. Pay attention to routine inspection; 2. Proper operation steps; 3. Effective maintenance.
Drying drum is a cylindrical device specially used for heating and drying stones in asphalt mixing equipment. Proper application and maintenance of drying drum can maximize the performance of drying drum, increase its service life and reduce application cost. Let’s take a look at the actual operation steps below.
1. Pay attention to routine inspections
The asphalt mixing equipment drying drum has been tested and inspected before leaving the factory, but it will be subjected to vibration and vibration during transportation to the construction site. A comprehensive inspection should be carried out before use: check whether all anchor bolts are tightened; whether all key pins are properly driven; whether all drive devices are adjusted according to the manufacturer’s instructions; whether all pipe connections are appropriate and whether the three-way joints are reliable; whether the entire equipment is fully lubricated; start the motor and check whether all parts can rotate steadily in the correct rotation direction; whether the pressure gauge can work normally and whether the valve is adjusted to the correct working pressure; whether the burner ignition mechanism is available and whether the gate valve is open.
2. Correct operation steps
After the equipment is started, it is recommended to control the machine manually at the beginning, and then switch to the automatic control mode after achieving the required production volume and pouring temperature. The stone should be dried and have a stable moisture content as much as possible so that the stone can maintain a stable final temperature when passing through the drying drum. If the stones delivered to the drying drum change frequently and the moisture content changes each time, the burner should be adjusted frequently to compensate for these changes.
The stones directly from the crushed stone have a relatively constant moisture content, while the stones from the outdoor storage yard have a higher moisture content, and the moisture content of different piles varies greatly. Therefore, it is best for the stones to come from the same source.

Bitumen is a polymer mixture composed of asphaltene, colloid, aromatic hydrocarbons and saturated hydrocarbons. Asphaltene is dispersed in aromatic hydrocarbons and saturated hydrocarbons with the help of colloid to form a colloidal structure. When the asphaltene content is low, the bitumen has good adhesion, plasticity and fluidity, but poor temperature stability and elasticity
Bitumen modification principle:
Bitumen is a polymer mixture composed of asphaltene, colloid, aromatic hydrocarbons and saturated hydrocarbons. Asphaltene is dispersed in aromatic hydrocarbons and saturated hydrocarbons with the help of colloid to form a colloidal structure. When the asphaltene content is low, the bitumen has good adhesion, plasticity and fluidity, but poor temperature stability and elasticity. The polymer modifier is similar to the asphaltene in bitumen. Its addition, after fully swelling with bitumen, absorbs the aromatic hydrocarbons and colloid in bitumen to form a new colloid, which not only retains or increases the adhesion, plasticity and fluidity of the original bitumen, but also improves the temperature stability and elasticity of bitumen, thereby achieving the purpose of improving the road performance of bitumen.
Bitumen modification process:
The modifier and additive are evenly and finely dispersed into the matrix bitumen, and the contact area between the original bitumen and the modifier is increased as much as possible to ensure full swelling and development, which not only improves the utilization rate of the modifier but also makes the original bitumen performance the most perfect improvement.
The modified bitumen complete production equipment has the following advantages:
1. It is suitable for a variety of modifiers, such as SBS, EVA, PE, etc.;
2. The ratio of modifier to bitumen can be set at any time according to user needs;
3. The production volume of each cycle can be set arbitrarily within the maximum productivity;
4. The modified bitumen has high quality, and the modifier has a small particle size and uniform distribution after emulsification;
5. The production process is fully automatically controlled, and the production records can be queried at any time;
6. The weighing system is accurate in measurement, and the weighing error is less than 1%;

In highway construction, asphalt mixing station plays a vital role. As a kind of equipment integrating intelligence, high efficiency and environmental protection, asphalt mixing station provides strong support for improving the quality of highway construction. This article will introduce the relevant knowledge of asphalt mixing station in detail to help readers understand this key equipment.
Asphalt mixing station is a kind of equipment specially used for producing asphalt concrete, which is widely used in highway, municipal road, bridge and other engineering construction. Asphalt concrete is a kind of building material mixed with asphalt, gravel, sand and other materials. It has the characteristics of strong durability and good compressive resistance. It is an ideal material for highway construction.
2. Features
Intelligence: Asphalt mixing station is equipped with advanced control system and sensor, which can realize automatic production, reduce manpower input and improve production efficiency.
Environmental protection: Asphalt mixing station adopts closed design to reduce dust pollution, and is equipped with noise reduction facilities to reduce noise pollution.
Efficiency: Asphalt mixing station has high production capacity and can produce a large amount of asphalt concrete in a short time to meet the needs of engineering construction.
3. Function
Provide asphalt concrete: The main function of asphalt mixing station is to produce asphalt concrete and provide necessary building materials for highway construction.
Improve highway quality: By using asphalt concrete, the smoothness, compressive strength and durability of the highway can be improved, thereby improving the quality of the highway.

Never stop, escorting the quality of road construction
Inheriting decades of technical accumulation, asphalt mixing station has become an indispensable part of building and maintaining high-level roads. This seemingly ordinary device carries the important mission of ensuring road safety and improving driving experience. As the core technology of modern road engineering construction, asphalt mixing station goes all out to continuously strive for a better, safer and more efficient travel environment.
Fast drive, tenacious progress
Asphalt mixing station plays a role in road engineering. It uses mature technology and processes to ensure the smooth progress of road construction with efficient mixing capacity and stable production quality. From conveying raw materials to the precise proportion of oil and aggregates, to the uniform mixing of the final product, the asphalt mixing station, with its professional working attitude, ensures the quality and stability of road materials, and provides a solid foundation for the construction of high-standard road projects.
Innovation leads, environmental protection takes the lead
Asphalt mixing station plays an important role in promoting sustainable development. Faced with increasingly urgent environmental protection requirements, mixing stations continue to innovate technology, improve production efficiency, and also pay attention to environmental protection responsibilities. By introducing advanced dust removal and purification devices, intelligent equipment control systems and combustion equipment, the asphalt mixing station effectively reduces environmental pollution and makes positive contributions to protecting the surrounding ecological environment.

Emulsified asphalt equipment plays an important role in road construction, and its production quality will directly affect the quality of facilities such as roads. In order to operate it better, we need to pay special attention to the following four points when applying emulsified asphalt equipment:
1. Before spraying, the emulsified asphalt equipment must check whether the position of each valve is correct. The hot asphalt added to the emulsified asphalt equipment must reach an operating temperature of 160~180℃. For long-distance transportation or long working time, a heating device can be used for insulation, but it cannot be used as an oil melting furnace.
2. When the asphalt in the emulsified asphalt equipment is heated by a burner, the asphalt height must exceed the upper plane of the combustion chamber, otherwise the combustion chamber will be burned.
3. The emulsified asphalt equipment cannot be filled too full, and the fuel filler cap must be closed tightly to prevent asphalt from overflowing during transportation.
4. This vehicle has two front and rear control consoles. When using the front control console, the switch must be turned to the front control. At this time, the rear control console can only control the lifting and lowering of the nozzle.
I believe that through the above description, everyone will be more comfortable when using emulsified asphalt equipment in the future. As for the relevant operating matters of the equipment, I will introduce them to you here today. If you want to know more information, please pay attention to the next explanation.

The site selection of the asphalt mixing station should follow three principles. Let’s take a look:
1. When selecting the site for the asphalt mixing station in the early stage of construction, the construction party should pay attention to the line direction of the construction site, because the line direction of the construction site will directly affect the quality of the mixed asphalt. Asphalt is an important material used for road and engineering construction. If the quality is poor, it will inevitably have a serious impact on the quality and safety of the entire project. Therefore, when selecting the site, it must be considered in many aspects, and meet the on-site requirements, and confirm the location of the mixing station according to the drawings.
2. Secondly, it is necessary to have a full understanding and grasp of the basic elements of the asphalt mixing station construction, such as whether water and electricity can be supplied normally, or whether the size of the land is sufficient to build an asphalt mixing station.
3. Since the use of asphalt mixing stations belongs to mechanized construction, there will inevitably be dust, noise and other pollution problems during the operation. It can be seen that when selecting the site, it must be kept as far away as possible from residential areas, schools or farms to avoid a greater impact on the surrounding environment.

Asphalt mixing plants, what role? Asphalt mixing plants, also known as asphalt concrete production equipment, is a special facility for mixing, heating, dust removal and other process treatments for raw materials such as sand, mineral powder, asphalt, etc., to produce asphalt concrete for road construction. As an indispensable role in road construction, the responsibility of the asphalt mixing plant is not only to complete the production of asphalt concrete, but also to provide solid guarantee for road construction.

Highways basically use asphalt materials, and asphalt mixing plants can be used to produce a variety of asphalt mixtures. So what are the mixing methods of asphalt mixing plants?
According to the mixing method, it can be divided into: continuous drum type and intermittent forced type. Continuous drum type, that is, the production is produced by continuous and uninterrupted mixing method, and the heating and drying of aggregates and the mixing of mixtures are carried out continuously in the same drum.
Forced intermittent type, that is, the heating and drying of aggregates and the mixing of mixtures are forced to be carried out periodically. The equipment mixes one pot at a time, and each mixing takes 45 to 60 seconds. The output depends on the equipment model.