The Working Principle Of An Asphalt Mixing Plant
An asphalt mixing plant is used to mix several aggregates with bitumen to make hot mix paving material for a number of construction industries. The aggregates used can vary depending on the grade and dimensions of asphalt required. Finer aggregates may also be added as well as mineral fillers. The two main main forms of asphalt mixing plants: continuous mix plants and batch mix plants. Both kinds of plants produce asphalt their difference is found in the process employed to produce said asphalt.
- Working Principles Of Asphalt Batch Mixing Plant
1. Raw, unheated aggregates from different storage bins are fed in to the cold aggregate feeder.
2. The aggregates are moved into the drying drum through a conveyor system(sistema de transporte).
3. The burner fueling the drying drum ensures the aggregates are dried effectively with heat.
4. The plant is fitted with a primary dust collector. That collector is designed for filtering heavy dust particles, so there exists less pollution.
5. As soon as the aggregates are dry, they are transferred to the tower unit through a bucket elevator.
6. Near the top of the tower unit is really a multi-layered screening unit. As hot aggregates go through the multiple screens, they get treated with the screening effect.
7. Separate hot bins are employed to store different type of aggregates.
8. Bitumen is stored and heated in special tanks that are equipped with pumping equipment. The bitumen is pumped into the weighing hopper.
9. The aggregates are weighted and discharged in the main mixing unit. Inside of the mixer, filler materials and bitumen are combined with the aggregates.
10. After mixing for that required time, the hot asphalt is able to be applied. It is actually typically discharged into waiting tucks, but it is also sent to temporary storage silos.
11. The whole plant is controlled by way of a computerized(computarizado) cpanel.
Elements Of An Asphalt Plant
1. Primary vibrating screen
2. Cold feed bins
3. Charging conveyor
4. Hot aggregate bucket elevator: The bucket elevator is comprised of an extended, covered structure with a lot of buckets linked to a chain system. The heated aggregates are transported to the very top from the tower in this elevator unit.
5. Drying drum with burner: Perhaps the most significant portion of the plant. It is actually compromised of the rotating drum and burner unit. The rotation ensures the aggregates are heated up evenly.
6. Pre-separator with bag filter: The bag filter is used to get rid of harmful dust particles and toxic gases through the plant's emissions.
7. Hot bins
8. Multi-deck vibrating screens
9. Mixing unit: The mixing unit ensures each of the raw materials are combined effectively for the correct duration. Mixers are typically jacketed so that the contents remains hot and prepared for discharge.
10. Weighing hoppers: The weighing hoppers are very important for ensuring the appropriate proportions of raw materials are sent to the mixing drum.
11. Bitumen storage tanks: Direct heating type tanks have a burner. Meanwhile, indirect heating type tanks utilize an internal hot oil coil system for heating the bitumen.
12. Cpanel: PLC panel by using a touchscreen display and interface for convenient oversite and power over the plant.
13. Filler storage silo/hopper
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