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    Vertical asphalt melting device (with stirring mechanism)

    Vertical asphalt melting device (with stirring mechanism)
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    China Suppliers Factory Large Solid Asphalt Melting Tank Equipment for Efficient Asphalt Heating Solutions

    An asphalt melting tank is essential heat exchange equipment widely utilized in the asphalt production industry. This innovative solution facilitates the transformation of solid asphalt materials into a molten state by applying external heat. Classified by material form, asphalt melting tanks are available in granular and block shapes. They can also be categorized based on the heating medium used: direct heating tanks (fueled by coal, gas, or oil) and heat transfer oil melting tanks, including electric heating versions, Moreover, our range of asphalt melting tanks differs by structure, offering both vertical and horizontal designs. We ensure versatility and efficiency in our products, catering to diverse operational needs. As leading suppliers and manufacturers based in China, our factory specializes in producing high-quality asphalt melting tanks tailored to meet your requirements
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      Product Details

      Product Description

      For general melting volumes that are relatively large (2 - 15 t/h), a vertical coil structure is adopted; for smaller melting volumes (1 - 2 t/h), a horizontal tube bundle structure is used; for very small melting volumes (for testing purposes - 100 - 1000 kg/h), an electric heating structure is employed. While for block asphalt, an intermittent (discontinuous) tube bundle structure is generally used.

      Solid asphalt melting tank structure
      Asphalt melting equipment display
      Main Structure

      The main structure consists of an asphalt tank body (upward straight and downward conical), a heat transfer oil heating coil (inner and outer coils and conical coil), a stirring system (motor reducer, support), and a support frame (upper and lower supports and columns). It is also equipped with electronic weighing sensors, digital thermometers, a bottom discharge mechanism, an asphalt filter, an asphalt buffer (receiving) tank, etc.

      Working Principle
      1
      Melting Phase: The solid asphalt enters the melting zone through the feeding port. Under the action of high-temperature heat transfer oil in the coil pipes, the asphalt is heated, melted, and mixed by the agitator to ensure uniform heating. Liquid asphalt is pressed into the secondary zone while slag enters the conical storage area.
      2
      Secondary Heating: Asphalt enters the secondary heating zone from the bottom for further heating, dehydration, and impurity sedimentation. Once the temperature meets process requirements, qualified asphalt is discharged through a filter and transported by an insulated pump.
      3
      Cleaning & Maintenance: A liquid discharge valve and manhole are located at the bottom. For cleaning, the asphalt pump sends liquid to the buffer tank, then the bottom slag mechanism discharges settled impurities. The manhole allows maintenance personnel access to the interior.
      4
      Temperature Control: A temperature measuring point at the outlet controls the heat transfer oil inlet valve. This regulates melting speed and prevents asphalt aging caused by overheating.
      Frequently Asked Questions
      Q1: How do I choose the right structure for my melting volume?
      For large volumes (2-15 t/h), use a vertical coil. For 1-2 t/h, a horizontal tube bundle is best. Testing purposes (100-1000 kg/h) use electric heating, while block asphalt typically requires an intermittent tube bundle structure.
      Q2: What components are included in the main tank structure?
      The system includes an asphalt tank body, heat transfer oil heating coils (inner/outer/conical), a stirring system with motor reducer, and a robust support frame with sensors and digital thermometers.
      Q3: How does the system ensure the asphalt is free from impurities?
      The process includes a secondary heating zone for impurity sedimentation, a conical storage area for slag, an asphalt filter, and a dedicated bottom slag discharge mechanism.
      Q4: How is the asphalt temperature regulated to prevent aging?
      A temperature measuring point at the outlet monitors the asphalt. It automatically controls the opening of the heat transfer oil inlet valve to maintain the set temperature range and prevent overheating.
      Q5: Is there a way to perform internal maintenance on the tank?
      Yes, the tank is equipped with a bottom manhole (inspection hole) that allows maintenance personnel to enter the unit after the liquid asphalt has been completely discharged.
      Q6: What is the purpose of the stirring system?
      The agitator/stirring system enhances heat transfer and ensures uniform heating of the asphalt during the melting phase, which improves overall efficiency and quality.