Cost of milling and planing equipment, price of recycled material crushing and screening equipment

Description :

　　Price and cost of milling and planing equipment, recycled material crushing and screening equipment

　　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.

　　Asphalt pavement is affected by various natural factors and will gradually age over time. Aging asphalt will weaken the bond between asphalt and aggregates, causing the pavement particles to fall off and gradually expand, affecting the use of road engineering. Asphalt roads have high costs and complex construction, and the production of asphalt causes significant environmental pollution. Recycling asphalt can effectively reduce costs and increase material utilization efficiency. Below, we will provide a detailed analysis of asphalt recycling

　　Method/Steps

　　The aging of asphalt pavement is caused by the aging of asphalt, and the regeneration also revolves around the regeneration of asphalt. Adding recycled asphalt or asphalt with lower viscosity to aged asphalt for mixing and adjusting the adhesion of aged asphalt to improve its functional use. The recycling of asphalt pavement can save a large amount of asphalt and gravel materials, reduce engineering costs, minimize environmental pollution, and avoid the treatment of asphalt road waste, resulting in significant economic and environmental benefits.

　　The steps of recycling: digging and excavating aged asphalt roads → transporting to recycling sites → crushing and screening waste materials → mixing and stirring with appropriate amounts of new asphalt, new aggregates, recycled materials, etc. → making new asphalt materials, mainly used for laying road base or surface layer lower layers, etc.

　　Regenerative economy: Regenerative economy mainly uses low viscosity petroleum mineral oil. In order to save costs, waste materials such as engine oil, heavy oil, lubricating oil, etc. are mainly used in the project, which is not only economical but also environmentally friendly, and improves material utilization efficiency.

　　In the process of recycling and reusing asphalt road waste, we need to add recycled asphalt to the old asphalt road material. The amount of recycled asphalt added needs to be tested and confirmed. After testing the viscosity or penetration of the old asphalt, the aging degree of the asphalt material is confirmed, and an appropriate proportion of recycled asphalt is calculated and added. Regenerative asphalt can effectively soften brittle and hard aged asphalt, facilitating full decomposition and effective mixing of new materials. Regeneration can also regulate the colloidal structure of asphalt and improve its fluidity.

　　The mix proportion of recycled asphalt mixture: The proportion of the mix proportion should fully consider the aging degree of the old pavement material, as well as the asphalt content and aggregate gradation in the original mix proportion of the asphalt road, so as to ensure the reasonable mixing of newly produced asphalt mixture. We should also fully consider the requirements for road use, so that the recycled new mixture can meet various physical and mechanical performance indicators of the road, and meet national, regional and other standard requirements

　　Production process: Recycled asphalt mixture can adopt various production processes, including hot mixing and cold mixing according to the regeneration method, manual and mechanical mixing according to the use of mechanical equipment, and on-site and factory regeneration according to the production site. The proportion of old materials added varies with different production technologies. When using a large drum mixer, the proportion of old materials can reach 40% -80%, while other mixes generally do not exceed 30%. For manual mixing, the proportion is lower based on on-site conditions and experience judgment.

　　The current method of using recycled asphalt mixture with asphalt content is the Marshall test method. After the laboratory provides the ratio, due to the complexity of on-site construction, some indicators that cannot meet the requirements based on empirical judgment may be appropriately relaxed.

　　On site use of recycled asphalt mixture: Due to the performance limitations of the recycled mixture after adding old materials compared to newly produced asphalt road mixture, it is recommended not to use it on the topmost layer of the road surface during use. It is generally used for the base layer, lower layer of the road surface layer, middle layer, etc., to avoid direct contact with air and accelerate aging.

　　Old material addition ratio: If the recycled mixture is directly used for road surface materials, in situations with high traffic volume or expected future traffic volume, high traffic load, the old material content should be controlled at 30%~40%. For secondary roads, branches, and secondary roads with low traffic volume, the old material content can reach 50%~80%. When using recycled mixture for the bottom layer or base of the road surface, ensure the quality of the recycled mixture while using as much old material as possible.

　　During the process of recycling old materials, attention should be paid to not mixing soil and other debris into the old materials. If they have already been mixed, they should be cleaned up to avoid affecting the quality of the recycled mixture and reducing the durability of the road.

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