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We are a company with asphalt heating and storage equipment as the main body, integrating the production of road maintenance equipment, technical services such as design of asphalt storage and energy-saving renovation of old storage, undertaking construction and installation of asphalt storage/oil storage, industrial pipeline installation, boiler installation, steel structure installation, construction plumbing, HVAC, air conditioning, fire-fighting, waterproofing and anti-corrosion insulation, petrochemical engineering and accessories sales and other comprehensive services in one.

Burner-heated emulsified asphalt production equipment

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# Burner-Heated Emulsified Asphalt Production Equipment: Technological Innovation and Industry Applications In the field of road construction and maintenance, emulsified asphalt has become a vital branch of asphalt materials due to its energy-saving, environmentally friendly, and convenient construction features. As a core piece of equipment, burner-heated emulsified asphalt production machinery leverages advanced temperature control and optimized processes to ensure stable production and enhanced product quality. This article explores the innovative value of this equipment from four key perspectives: equipment principles, technological advantages, application scenarios, and future development trends. ## I. Equipment Principles: Synergy Between Burner-Based Temperature Control and Emulsification Process The core of emulsified asphalt production lies in blending asphalt, water, and an emulsifying agent into a uniformly dispersed emulsion through mechanical shearing. The burner-heated equipment utilizes a thermal oil circulation system to provide precise temperature control for asphalt heating, pipeline insulation, and emulsion mixing. Its operational process can be broken down into three main steps: 1. **Thermal Oil Circulation Heating**: The burner ignites diesel or natural gas to heat the thermal oil to a temperature range of 150°C–180°C. This heated oil is then circulated via a closed-loop system to transfer heat to the asphalt transition tank, emulsion mixing tank, and final product storage tank, ensuring consistent temperatures throughout the process. 2. **Asphalt and Emulsion Mixing**: Hot asphalt (110°C–120°C) is combined with preheated emulsifier solution (60°C–90°C) according to a predetermined ratio. The mixture is then fed into a colloid mill, where the gap between the rotor and stator is maintained at just 0.035–0.05 mm. High-speed shearing at 3,000–8,000 rpm breaks the asphalt into fine particles measuring 1–5 μm, which are evenly dispersed within the aqueous phase. 3. **Final Product Output and Preservation**: The emulsified asphalt is pumped out and stored in tanks, while a thermal oil coil continuously maintains the temperature to prevent asphalt particles from clumping together. Some advanced systems also incorporate electric heaters or inert gas protection mechanisms, further extending the shelf life of the finished product. ## II. Technological Advantages: Efficiency, Energy Savings, and Intelligent Automation Through innovative design and engineering, burner-heated emulsified asphalt equipment addresses critical challenges associated with traditional methods, such as difficult temperature control, high energy consumption, and uneven emulsification. These advancements translate into three key benefits: 1. **Precise Temperature Control Enhances Emulsification Quality** Traditional heating methods often lead to localized overheating of asphalt, compromising the activity of emulsifiers. In contrast, the thermal oil system employs a dual-metal bimetallic thermostat linked to an electric shut-off valve. When the asphalt temperature drops below the lower limit (e.g., 132°C), the system automatically activates heating; when it exceeds the upper limit (e.g., 138°C), the heat source is cut off, ensuring a stable reaction environment for asphalt and emulsifiers. Experimental results show that precise temperature control boosts the storage stability of emulsified asphalt by up to 40%. 2. **Energy Efficiency Reduces Operational Costs** Emulsified asphalt production only requires heating asphalt to a moderate temperature range of 120°C–140°C, significantly reducing energy consumption compared to conventional hot-mix asphalt processes that demand temperatures as high as 160°C–180°C—achieving energy savings of over 50%. Additionally, the thermal oil circulation system recycles waste heat, and when paired with a burner-based waste heat recovery unit, energy consumption can be further minimized. For instance, a major highway project utilizing this efficient burner technology achieved annual fuel cost savings of approximately RMB 150,000. 3. **Intelligent Automation Simplifies Operation Processes** Modern equipment integrates variable-frequency speed control pumps, PLC control systems, and user-friendly human-machine interfaces, enabling real-time monitoring of critical parameters such as asphalt flow rate, emulsion temperature, and colloid mill rotation speed. The system can automatically adjust mixing ratios based on these inputs. For example, Wuxi Lute Heavy Industry’s equipment supports remote monitoring and predictive fault alerts, allowing operators to manage the entire production process simply by setting parameters on a touchscreen interface. ## III. Application Scenarios: From Road Construction to Eco-Friendly Maintenance Burner-heated emulsified asphalt equipment finds extensive use in various applications, ranging from new road construction and rehabilitation to eco-friendly maintenance projects. Its versatility makes it well-suited to meet diverse operational needs: 1. **New Road Construction and Reconstruction** Emulsified asphalt is ideal for applications such as tack coats and prime coats, particularly when using cold spraying techniques that eliminate the need for high-temperature hot asphalt, thereby minimizing damage to underlying layers. 2. **Preventive Maintenance** The rapid curing properties of emulsified asphalt make it perfect for thin-layer seal coatings, effectively repairing cracks, ruts, and other pavement defects. Meanwhile, synchronous chip seal trucks utilize burner-heated asphalt to integrate asphalt spraying, aggregate spreading, and compaction into a single, highly efficient operation—boosting productivity by up to two times compared to traditional methods. 3. **Environmental Protection and Resource Recycling** Emulsified asphalt cold recycling technology allows old pavement materials, such as milled asphalt, to be mixed with emulsified asphalt and cement, creating recycled base materials. By precisely controlling the temperature of recycled materials (60°C–80°C) during the process, burner-heated equipment prevents asphalt aging caused by excessive heat, while simultaneously reducing the reliance on virgin asphalt by more than 50%.

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Burner-heated emulsified asphalt production equipment