The perfect balance of powerful, low installation cost and easy moving asphalt mixing plants was developed by our research and design team. Our plants are skid-mounted so it saves RCC foundation work cost. Every new technology proudly presented by us is a value to the world in the name of energy-saving and environment. In addition to our efficient products in asphalt technology, short response time, excellent development capability and state-of-the-art production facilities characterize our company.
In the asphalt mixing plant the aggregate material is stocked according to the grain size and type. This material is usually loaded into individual hoppers by wheel loaders. According to the recipe, the minerals are distributed through the dosing belt (normally frequency-controlled) to the collecting belt below. Thus, the corresponding cold feed recipe is prepared on the collecting belt. The material is then transported to the dryer drum through this collecting belt.
The dryer drum is known as a rotary dryer. Here, the material is dried and heated for further processing. For the manufacture of asphalt, it is necessary to remove moisture from the base material to ensure adhesion with the bitumen. Designed at the proper inclination, it transports the material through the entire drum through rotary movement. The lifter plates in the drum provide a thick material curtain in the drum, making efficient heat exchange possible. Apart from the dust produced, water vapor is also generated during the drying or heating of aggregates. To keep the heat loss to a minimum during the drying process, the drum tube is insulated against heat radiation.
The burner used for drying and heating can be operated with Diesel / LDO (Light Diesel Oil/F0 (Furnace Oil). During operation, the operator can change the combustible with the help of his controls.
Our bitumen decanter represents the forefront of decanting technology, designed to enhance efficiency and maintain high quality standards. This continuous-type machine offers a diverse range of plants with different properties to meet various requirements. It melts the bitumen indirectly through thermal energy, preserving its quality while ensuring pollution-free operations. Equipped with a hydraulic system, the decanter simplifies drum loading and unloading, significantly reducing time compared to batch-type systems. Additionally, it comes across as a cost-effective solution due to its advanced fuel consumption technology and minimal labour requirements per tonne. The machine is user-friendly, allowing even unskilled workers to operate it with ease.
A baghouse filter an air pollution control device and dust collector that removes particulates or gas released from commercial processes out of the air. Air flow gives the bag structure. Dirty air flows through the bag from the inside, allowing dust to collect on the interior surface. During cleaning, gas flow is restricted from a specific compartment. Without the flowing air, the bags relax. The cylindrical bag contains rings that prevent it from completely collapsing under the pressure of the air. A fan blows clean air in the reverse direction. The relaxation and reverse air flow cause the dust cake to crumble and release into the hopper. Upon the completion of the cleaning process, dirty air flow continues and the bag regains its shape. Pressure drop is the resistance to air flow across the baghouse. A high pressure drop corresponds with a higher resistance to airflow. Pressure drop is calculated by determining the difference in total pressure at two points, typically the inlet and outlet. The air-to-cloth ratio (ft/min or cm/s) is defined as the amount of gas entering the baghouse divided by the surface area of the filter cloth.
Lal’s hot mix storage systems with capacities ranging from 20 to 100 tonnes allow hot coated aggregates to be stored directly from the asphalt plant without long delays when trucks are not available for loading, as well as minimising waiting times when trucks are in position and loading. The structure and distribution of the storage silos to provide optional levels of sheeting, insulation and other materials to minimise heat loss and extend storage periods for hot mix materials.
The flue gas produced in the dryer drum and other air from the production process are extracted under vacuum and cleaned in a fabric filter. The flue gas is fed into the pre-separator of the filter along with water vapor. The coarse particles of the exhaust gas are separated in this pre-separator which we deflect and slow down the flow speed. This coarse filler is fed back directly to the mixing process through a screw conveyor. The fine fraction of the exhaust gas, known as fine filler, is cleaned in the actual filter housing. The filter cloth gradually become clogged with dust particles, so it is removed from time to time by a cleaning fan. The fine filler generated is collected in the dust collecting trough below the fine housing and is further transported through a screw conveyor installed in the trough and is later deposited in the reclaimed filler silo.
The actual mixing process takes place In the scrolling and remixing tower. The materials described in the upstream process arrive at the mixing tower screen via a hot stone elevator. The hot aggregate material is uniformly supplied to the Multi screening decks. The screen is activated via two unbalance motors, stimulating the screen unit, and thus the screens, Co vibrate vertically. The input material is thus divided into the individual fractions and separated according to grain sire, stocked in the respective compartments of the hot bin section below.
The mixing and weighing section is one of the core elements of an asphalt mixing plant. This is where the actual mixing process takes place. From the for bin section the hot material, stocked according to grain slze, is dispensed Into the aggregate weigh hopper below corresponding to the mixing recipe. The aggregate weigh hopper is mounted on load cells to facilitate the weighing. The individual fractions are weighed sequentially, i.e. the discharge doors open consecutively and dispense the present quantity of the respective grain into the aggregate weigh hopper. The weighing of the bitumen and the filler is carried out in parallel to the weighing of the aggregate material in the aggregate weigh hopper. The bitumen is weighed in the bitumen weigh hopper and dispensed into the mixer. The required filler is weighed in the filler weigh hopper, which is mounted on load cells, and delivered into the mixer via an inlet screw conveyor.
Both the filler reclaimed from the plant and the imported filler are stored in filler silo. Only the reclaimed filler is necessary for the basic function of an asphalt mixing plant. There is also the option of storing and using imported filler (foreign filler). The filler then arrives at the mixing tower for further processing via a filler elevator and a Screw conveyor.
The bitumen binder is a core component of the asphalt. The different types of bitumen, tailored to its relevant intended use, are stared separately in appropriate thermally-insulated bitumen tanks. These are heated in order to maintain the required temperature of the bitumen, approx. 160 – 180 °C. These days bitumen tanks are heated almost exclusively via electricity, with a feasible alternative being tanks also heated by thermal oil. This means that the energy from the hot thermal oil is transferred to the bitumen via heat exchangers. The hot bitumen is removed from the tanks via a pump and conducted to the bitumen weigh hopper via heated and insulated pipelines. The tanks are filled by tanker lorry via a fill pump, through pipelines into the respective tank.
A command cabin for operating personnel is available to control the processes of an asphalt mixing plant. The operating menu for the entire mixing plant is installed in this cabin. From here, all drives can be started in manual mode. Here, all data required for the mixing process is collated and displayed. As well as managing the required recipes and monitoring or implementing the mixing process, operating personnel can also control.
At an asphalt mixing plant the aggregate material is stockpiled according to grain size and type. This material is usually loaded into the individual hoppers by a wheel loader. The minerals are dispensed via dosing belts (normally frequency-controlled) onto the collecting belt below, specific to the recipe. In this way, a corresponding cold feed recipe is generated on the collecting belt. The material is then transported to the dryer drum via this collecting belt
Technical Specifications |
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|---|---|
| Model | Capacity |
| LBMX – 800 | 80 TPH |
| LBMX – 1200 | 120 TPH |
| LBMX – 1600 | 160 TPH |
| LBMX – 2000 | 200 TPH |
| LBMX – 2400 | 240 TPH |
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