Add-on Recycling System Retrofitting for DG4000 Asphalt Mixing Plant Empowers Green Road Construction in Jiangxi, China
In recent years, with the increasingly higher requirements for environmental protection and resource recycling worldwide, asphalt pavement recycling technology has emerged as a crucial development direction in the road construction industry. D&G Machinery’s 4000-model asphalt mixing plant, which was put into operation in 2009 with efficient and stable performance, received add-on recycling system retrofitting in 2020. It has been applied to many construction projects in Jiangxi, providing strong support for the green upgrading of local transportation infrastructure.
Technological Upgrade: Add-on Recycling Retrofitting Enhances Environmental and Economic Values
The DG4000 asphalt mixing plant was originally designed with a rated capacity of 320t/h using traditional mixing process, which demonstrated excellent performance in asphalt mixture production. In 2020, in response to the national energy conservation and emission reduction policies, Jiangxi Transportation Engineering Group Co., Ltd. (hereinafter referred to as ‘Jiangxi Transportation Engineering’) carried out an add-on recycling system retrofitting. A RAP (Reclaimed Asphalt Pavement) recycling material processing system was added, and the RAP addition ratio can reach 100%, which significantly reduced new material consumption and carbon emission. The post-retrofit equipment boasts outstanding performance in road maintenance, reconstruction and expansion projects in Jiangxi and other regions, ensuring the quality of asphalt mixture while greatly saving construction costs.
It is worth mentioning that the encounter between Jiangxi Transportation Engineering and D&G Machinery is a wise choice. After fully comparing similar equipment in the market, the customer, with remarkable insight, recognized the outstanding advantages of D&G Machinery products regarding technological innovation, stable performance and service support. This choice reflected the customer’s rigorous attitude, strategic vision, and the high pursuit of quality. It was the mutual accomplishment of the customer's wise decision-making and D&G Machinery's strong capabilities that forged this win-win collaboration. We firmly believe that this partnership, initiated by professional considerations, has enabled the plant to operate efficiently for 16 years, and will continue to create more values.
Successful Application in Jiangxi Road Construction
Jiangxi Province features complex terrain and a rainy climate, meaning high requirements on the durability and eco-friendliness of asphalt pavements. The retrofitted DG4000 asphalt mixing plant, leveraging its precise and uniform RAP mixing technology, has been successfully applied in:
Maintenance projects for national and provincial trunk highways, as well as urban road reconstruction and expansion projects in Jiangxi. By adopting plant-mixed hot recycling technology, it effectively uses old pavement milling materials to reduce construction waste. The high-proportion application of RAP has lowered raw material procurement costs and shortened construction periods.
The add-on recycling system retrofitting of DG4000 asphalt plant not only extended equipment service life, but also promoted the widespread of asphalt pavement recycling technology adoption in Jiangxi. This case proves that traditional equipment can fully meet the needs of modern green construction through proper retrofitting, providing valuable experience for similar projects. Looking ahead, with the in-depth advancement of the “dual carbon” goals (carbon peak and carbon neutrality), the intelligent and eco-friendly upgrade of asphalt mixing plants will become an inevitable trend in the industry.