What is LB-Series Batch Asphalt Mixing Plant?
With years of experience, our LB-Series Batch Asphalt Mixing Plant incorporates advanced techniques for superior asphalt production. It is a new product by combining our many years of experience in the production of asphalt concrete mixing equipment. This series is a stationary asphalt hot mix plant with batch mixing.
Why choose our asphalt plant?
It is characterized by integrated system structure, fast transportation, and convenient installation and calibration. The operation system is easy to operate and the performance is stable and reliable. From installation to production, it will not last more than 25 working days. Besides, it is equipped with the advanced PLC automatic control and monitoring system, with automatic/manual operations and fault diagnosis and early warning functions.
What is usage of bitumen mixing plant?
The asphalt mixer meets the national standards to cover the usage of highway construction, ranging from rural road to municipal road as well as high standard expressway.
Why Choose Batching Plant?
- Diverse Production Capacity: Adapt your asphalt production to project needs, offering a wide output range from 40 tph to 320 tph.
- Efficient System Integration: Our batch asphalt mixing plant comes with 12 integrated systems, encompassing aggregate supply, drum dryer, burner, dust collector, hot aggregate elevator, vibrating screen, powder supply, weighing, mixing, and more.
- Versatile Burner Options: Opt for efficient and energy-saving burner systems—diesel, heavy oil, fuel oil, natural gas, and coal combustion.
- Advanced Dust Management: Choose primary dust collection—cyclone or gravitational, and secondary collection—water or baghouse, to enhance environmental performance.
- Customizable Silo Choices: Select from single, dual, or triple silos, with options for bypass-mounted or bottom-mounted, as well as heat storage silos for finished materials.
- Precision Control System: Our electrical control system guarantees precise, reliable operation, boosting efficiency and productivity.
- Asphalt Recycling System: Integrate asphalt concrete recycling thermal regeneration system for sustainable operations.
- Enhanced Powder Addition: Incorporate mineral powder/recycled powder (dual powder) system for accurate proportioning.
- Thermal Heating Solutions: Benefit from full-auto thermal oil heating and fuel oil, coal heating insulation systems.
- Efficient Asphalt Heating: Implement coal-fired tank-in-tank asphalt heating insulating system for energy-saving performance.
- Rapid Delivery System: Optionally, include pneumatic mineral powder/stone powder rapid delivery system, suitable for various conditions, and tailored to customer demands.
What is included in our asphalt mixing plant?
Cold Aggregate Supply System
Advantages:
- Precise Proportioning: The propotional control system ensures accurate proportions of aggregates, leading to consistent and high-quality asphalt mixtures.
- Reduced Material Waste: Efficient material handling minimizes spillage and waste, optimizing resource utilization.
- Improved Production Control: The system’s modular design allows for easy monitoring and adjustment, enhancing process control and overall plant efficiency.
Details:
- Each bin adopts belt feeding machine controlled by VVVF motor, with accurate primary feeding.
- Sand bin is equipped with wall vibrator, with reliable feeding.
- Tail wheel and guide wheel adopt “self-cleaning” roling wheel. Drive wheel is hung with rubber on the surface, thus it can prevent belt slipping.
- The inlet is installed with grid net, thus it can prevent the netry of super-large materials, and achieve “primary selection”.
- It has filter screen, so that unqualified materials cannot enter the drying cylinder, thus reduce heat loss.
Drying System
Main Structure:
The Drying Drum’s key role is to heat and dry cold aggregates like stones and sand, achieving the necessary moisture level. Effective aggregate drying is crucial to prevent subpar asphalt mixes that could compromise the final pavement’s quality and performance.
Details:
- The drying drum is equipped with special blaes conducive to heat exchange between aggregate and flame, to ensure its maximum thermal efficiency.
- The outlet has a replaceable wear plate, ensuring a longer service life.
- The efficient and energy-saving burner, fueled both by diesel or heavy oil, is suitable for harsh working conditions such as plateau and rainy days.
- The fuel burner employs compressed air atomization, electric actuation, and a unique eccentric wheel mechanism. This design regulates the multi-blade damper and oil valve, ensuring optimal air-fuel ratio across all positions. This results in efficient combustion, minimal fuel usage, and superior thermal efficiency.
- The burner’s track installation allows for convenient maintenance. The infrared temperature measurement system ensures precise and reliable temperature control, using imported components.
- Small and medium-sized machines can also choose coal-fired burners, with better economic performance. For other options, we also provide all types of burner, such as fuel, gas, coal, or any combination of these three.
Dust Collector System
Main Structure:
The purpose is to prevent the release of airborne dust and emissions during batch asphalt mix plant operation. This ensures air quality and minimizes environmental pollution by capturing and containing fine particles produced during aggregate drying and mixing.
Details:
- Our batch asphalt mixing plant provides flexible configurations to match diverse project needs and local environmental regulations.
- Primary Dust Collector (Cyclone or Gravitational): Adjacent to the drying drum, the primary collector efficiently captures larger particles, preserving air quality.
- Secondary Dust Collector (Water or Baghouse): Following the primary collector, it targets finer particles that might escape.
- The purpose-built primary collector boasts simplicity, adjustability, and high efficiency. Its large filter area and insulation box ensure reliability and prevent filter issues.
- Baghouse dust collector has a flat bag design, compact structure, and efficient dust clearance. Its Nomex filter bag can withstand 250℃, maintaining smoke density below 20 mg/nm³, complying with environmental standards.
- The entire bag’s control system is connected with the host, with temperature protection device.
- Use screw conveyor and powder hoisting machine to convey the collected dust into the powder recovery tank for re-use.
Main Tower (Vibrating Screen, Hot Aggregate Storage Silo, Weighing System, Mixing System)
Main Structure:
The basic main tower consists of vibrating screen, hot aggregate storage silo, weighing system, mixing system.
Advantages:
Effective Screening: The vibrating screen efficiently sorts aggregates by size, guaranteeing appropriate aggregates enter the mix. This ensures a consistent asphalt mixture.
Temperature Preservation: Insulated storage silos keep aggregates warm, preventing rapid cooling and maintaining ideal mixing temperature.
Quality Assurance: The weighing system ensures strict quality control, meeting mix design requirements for each batch.
Heightened Efficiency: Automation enhances asphalt production efficiency, reducing errors and boosting overall plant productivity.
Homogeneous Mixing: Well-designed paddles blend aggregates and binder uniformly, ensuring even material distribution in the asphalt mix.
Optimal Formulation: Precise mixing time and temperature control yields asphalt with ideal properties, like workability and durability.
Details:
- Efficient vibrating screen: The box adoptes Hooke bolt connection, and it has good overall performance, and strong and durable features. The vibrator adopts high overhead style, with longer maintenance cycle.
- Use quick change cover clamp to fix trhe screen. At replacing the screen, users only need to loose clamp bolts outside, so the operation is convenient.
- The amplitude signs are marked at both sides of the box. Meanwhile, it is also installed with motor reverse braking device, and it can eliminate the beating and irregular motion of the resonance area.
- Weighing system adopts imported high-precision sensors, equipped with asphalt overload protection device. Thus, the measurement error of aggregate and powder can be controlled with ±0.5% and measurement error of asphalt with ±0.3%.
- Paddle agitator with the optimal length and width ratio can achieve 3D movement of mixed materials, so the mixing is evenly and speedy.
- The connection of lining plate and pot adopts card spring plug-in, so the adjustment and replacement are very convenient.
- High hardness weary lining plate and impeller head made of high chromium cast iron can reach more than 100,000 tons of service life.
Hot Aggregate Elevator System
Function:
Hot Aggregate Elevator: This vertically operating elevator transports heated aggregate from the drying drum to the top of the vibrating screen. The chain-driven elevator includes material buckets for efficient transfer.
Details:
Hot Aggregate Hoisting: The rectangular frame of the hot aggregate elevator features sprocket-driven wheels with auto-tensioning and non-return devices, ensuring safe and efficient thermal hoisting.
The drive system employs a SEW helical gear reduction motor, propelling the main shaft. A backstop device prevents reverse motion.
Constructed from heat-resistant steel, the elevator withstands high temperatures from hot aggregates, ensuring durability and reliability.
Powder Supply System
Function:
The Powder Supply System accurately measures and delivers additives, fillers, and mineral powders to the mix. These powders play a pivotal role in shaping asphalt characteristics like stability, durability, and workability, ensuring high-quality outcomes.
Types:
There are two types of systems for conveying powder to the weighing hopper of the mixing equipment.
- Manual feeding, powder hopper – Screw conveyor feeding system: This system is suitable for situations where the powder demand is small and the powder is supplied in bags.
- Powder silo – Screw conveyor system: This system uses a rotary valve to control the flow of powder from the powder silo to the inclined screw conveyor.
Our factory can provide both types of powder feeding systems to customers.
Details:
- Optimized Powder Spiral: Engineered with varying pitches, this spiral efficiently transports powder from the tank to the weighing hopper. A rotary valve and pneumatic cleaning system prevent clogs, ensuring consistent and uninterrupted feeding.
- The system accommodates both new and recycled powder, maintaining precise proportions through screw conveyor addition.
Asphalt Supply System
Function:
This system consists of asphalt pipelines, valves, pumps, and an asphalt weighing hopper with a weighing device. The weighing operation and discharge of the weighing hopper are controlled from the control room.
Details:
- Advanced Horizontal Heat Conduction Oil Heater: This fully automated heater integrates premium burners, control instruments, and program-controlled devices.
- Its standout features include automatic ignition and real-time monitoring. Once users define desired temperature and pressure ranges, the heater operates unattended. A panel of indicator lights showcases the heater’s status.
- Within the asphalt tank, coiled pipes and electric contact thermometers facilitate heat exchange, while the asphalt pipeline boasts a bellows global valve for automatic temperature control, preventing overheating and asphalt aging.
- For smaller setups, an efficient coal asphalt heating tank-in-tank structure eliminates the need for a heat conducting oil furnace, promoting energy savings.
Finished Asphalt Mixture Storage Silo
Function:
The essential role of the Finished Asphalt Mixture Storage Silo is to store the hot mix asphalt created by the mixing unit. This storage is crucial before transporting it to the construction site or further processing. Serving as a vital buffer, it ensures a continuous and reliable asphalt supply between the mixing unit and the construction site.
Details:
- The truck employs a variable frequency motor for precise speed control, ensuring accurate positioning and reliable start/stop functionality.
- Variety: Choose from bypass-mounted or bottom-mounted storage bins for finished products.
- Thermal Insulation: To maintain the heat of the hot mix asphalt, the storage silo often features mineral wool insulation to prevent rapid cooling.
- Discharge Mechanism: Equipped with bottom outlet gates, the storage silo facilitates controlled and metered discharge of the asphalt mixture. These gates also incorporate electrical heating insulation.
Pneumatic System
Function:
The Pneumatic System utilizes compressed air to operate valves, cylinders, and pneumatic devices, facilitating controlled material movement. This ensures precise and efficient control in asphalt mixing, enhancing plant automation and overall performance.
Details:
- It consists the supporting simple air compressor room.
- It uses galvanized pipes, metal hoses, and rubber hoses for the pneumatic system, which are resistant to high temperature and high pressure, ensuring reliable operation.
Control System
Function:
Control System acts as the brain of the plant, allowing operators to monitor, manage, and adjust various parameters to achieve precise control over the entire asphalt mixing process. It facilitates communication between different parts of the plant, enabling seamless integration and automated operation.
Details:
- The advanced control system incorporates globally recognized electrical components, PLC, and computers, ensuring stable, reliable performance and user-friendly operation.
- The PLC enables automatic, semi-automatic, and manual control for weighing, mixing, feeding, and more. Users can adjust asphalt mixture ratios on the computer screen, with dynamic display and recording of weighing processes, and print production records.
- The system is simple to use and learn, featuring dynamic production process display, automated aggregate heating, temperature control, batch weighing, mixing, heat conducting oil heating control, formula input, parameter adjustment, and record printing.
- The control room’s container structure provides an efficient and transportable solution.
