Video and image of waste asphalt treatment equipment for asphalt pavement crusher in Suqian City

Description :

　　Video and image of waste asphalt treatment equipment for asphalt pavement crusher in Suqian City

　　Xibao Heavy Industry actively responds to the national environmental protection call, always pays attention to the technology of asphalt recycling/environmental protection, continuously innovates around customer needs, independently develops multiple environmentally friendly products that meet market demand, and gradually enriches and improves the existing product series. At the same time, we are continuously investing in core technology areas and have formed strong alliances with multiple domestic universities, gathering a group of high-level and high-quality technical talents to provide technical support and assurance for our products. Rooted in and facing the world. Xibao Heavy Industry has always taken "sincere customer service" as the driving force for the company's development, segmenting customer needs and providing customized mechanical equipment. The company's sales and service network covers multiple provinces, cities, and autonomous regions across the country.

　　With a large amount of asphalt waste material (RAP) being reused, more and more customers are paying attention to equipment in the field of asphalt recycling, and the demand for related equipment has doubled accordingly. Jiangsu Xibao Heavy Industry, as a rising star in the field of asphalt recycling, has attracted a lot of attention from customers for its independently developed recycling products.

　　From this year's equipment sales data, it can be seen that the XB series asphalt waste crushing and screening equipment from Xibao Heavy Industry has been exceptionally popular in sales. As of now, it has been put into use in provinces and cities across the country such as Zhejiang, Jiangsu, Anhui, Xinjiang, Hubei, and Beijing, and has been exported to overseas countries such as Vietnam, helping RAP to recycle and achieve resource regeneration.

　　What are the advantages of XB series roller crushing and screening equipment?

　　The XB series is a specialized crushing and screening product launched by Xibao Heavy Industry based on its rich design experience in asphalt plant mixing and hot recycling equipment, combined with the particularity of domestic RAP material acquisition methods. The equipment adopts flexible separation technology combined with high-frequency screening technology to ensure the gradation control requirements in the production process of RAP mixture with high mixing ratio. The flexible crushing and screening method avoids the secondary damage of RAP grading, and the high-frequency screening technology can screen RAP below 4.75mm, ensuring the control of the proportion of fine materials in the mixture grading.

　　RAP flexible crushing and screening "3-step method":

　　1. First level single roll flexible separation

　　The crushing roller of the single roll primary crusher works in conjunction with the hydraulic driven pushing device, resulting in high crushing efficiency. Low speed combined with a movable buffer plate can achieve flexible separation. The wear-resistant parts on the crushing roller adopt the standard cutting head of the milling machine, which has good wear resistance and is easy to replace.

　　2. Grading system

　　The high-frequency vibration motor is used as the driving force motor to drive the screen mesh to vibrate (the screen body does not move), solving the problem of RAP material blockage below 4.75mm and achieving high-speed tapping of materials. This structure combines the conventional vibrating screen and vibrating screen into one, and one vibrating screen can separate three types of materials, reducing equipment occupation and saving costs.

　　3. Secondary roller type flexible separation

　　The double roll secondary crusher is equipped with two sets of crushing rollers arranged in a cross pattern. One of the crushing rollers is equipped with a spring tensioning device, which can adjust the gap between the crushing rollers to achieve the adjustment of material particle size and output after crushing. Compared with hammer crushing and impact crushing, roller crushing causes less damage to the gradation of RAP raw aggregates. The roller speed is low and the crushing method has minimal impact, greatly extending the service life of the equipment. At the same time, there is almost no dust generated during on-site work.

　　Since the beginning of the 21st century, environmental protection has received increasing attention from countries around the world. From multiple perspectives such as reducing environmental pollution, energy conservation, and emission reduction, the cold recycling technology of waste asphalt mixtures has gradually gained the attention and concern of experts and scholars.

　　a、 The on-site cold recycling technology of waste asphalt mixture is generally divided into two types: on-site cold recycling of asphalt layer and full depth on-site cold recycling. It is a process that does not require heating or other processes, only adding some new aggregates and rejuvenators to re pave the original pavement material. Due to the absence of transporting waste asphalt mixture, a significant amount of transportation costs have also been saved. This technology is generally applicable to first, second, and third grade asphalt pavements.

　　The construction process of this technology is as follows: first, a high-power road milling and mixing machine is used to directly mill and crush the road surface. Then, the rejuvenator and aggregate are fully and evenly mixed with the crushed waste asphalt mixture. After compaction by a roller, a wear layer is laid on the newly formed asphalt road surface, and finally a new asphalt surface layer that meets the design bearing capacity requirements is formed. Using traditional road maintenance methods, the amount of asphalt pavement waste is enormous, causing pollution to the environment. The large-scale mining of new materials can also lead to resource depletion and environmental damage. Adopting on-site cold regeneration technology can avoid the above-mentioned problems. It not only saves a lot of investment, but also benefits environmental protection, so it is called "green" construction technology.

　　b、 The cold recycling technology for waste asphalt mixture in the factory is a technique that crushes and screens the recycled waste asphalt mixture, and conducts corresponding analysis of the performance of the old asphalt and the chicken embryo of the old material. Based on the analysis results of the old asphalt components and the screening results of the old mineral material, a certain amount of rejuvenator, new aggregate, etc. are added and mixed at room temperature in a certain proportion. Then, these new mixtures that meet various indicators are transported to the site and spread according to the construction process of normal temperature asphalt concrete to form a road surface that meets the requirements of the specifications. This technology is generally applied to the asphalt pavement surface of Class III and fourth-class highway. It can also be applied to the construction of the base and sub base of highways.

　　The factory mixed cold recycling technology has been applied in the road reconstruction of Changjiu Expressway. After 11 months of observation, the following conclusions have been drawn:

　　1. The base pavement paved with factory mixed cold recycling technology has good ability to reflect cracks;

　　2. Cold recycled emulsified asphalt (asphalt and asphalt emulsifiers exhibit liquid asphalt under certain processes) can have a solid content of 60% -65%;

　　3. In the actual construction process, attention should be paid to health preservation. When the moisture in the emulsified asphalt evaporates, the total moisture content of the mixture should be less than 2% as the evaluation criterion for the end of health preservation.

　　In the factory mixing and recycling test of the old asphalt mixture on Shenshan Highway, it was pointed out that:

　　1. The high-temperature stability of factory mixed cold recycled asphalt mixture is good, which can meet the technical requirements of low-grade highway pavement.

　　2. Adding an appropriate amount of cement can significantly improve the low-temperature crack resistance and water stability of recycled mixtures. And during the actual test road construction process, it was found that when the mixing ratio of new and old materials was 1:4 and 1:5, the mixture was not evenly mixed, and the road surface was very rough and prone to segregation; When the mixing ratio is 1:6 and 1:7, the road surface is dense and rough, and the construction effect is better; When no new materials are added, the road surface density is good, the roughness is slightly poor, and the effect is average.

　　The factory mixed cold recycling technology of waste asphalt mixture has the advantages of green environmental protection, material saving, and simplified construction process, as it does not require excavation, landfilling, or other treatment of the original pavement base, and does not have problems such as the disposal and stacking of old road materials. Therefore, it has broad prospects for promotion and application.

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