Mobile Asphalt Drum Plant is a mechanical cum electronic equipment designed to produce hot-mixed asphalt. This plant aggregates; recycled materials and other additives are blended, heated, dried and mixed with the binder to make asphalt mixture according to the vital necessity. They are available as stationary as well as portable asphalt plants for sale.
Asphalt Drum Plant is also categorized as batch plants, semi-continuous plants well as continuous plants. Batch plant is applied where there an only small amount of production or where the amount of volume total is very less. Continuous plants also known as mobile asphalt plants are not appropriate for the small amount of production, as it can produce a ton of asphalt mixture every ten seconds or so.
The purpose of an Asphalt Plant is to blend aggregates, asphalt and other additives in required proportion as per job mix formula and at elevated temperature to produce a homogeneous hot mix paving mixture. This hot mix asphalt is used for road construction.
There are two types (based on design) of Plants (1) Batch Mix Plant (Discontinuous type) and (2) Drum Mix Plant.(Continuous type)
In Batch type mini asphalt mixing plant, drying and heating of aggregates take place in the rotary drum, and heated aggregates are weighed & screened in hot bins for proportioning before blending with a binder in separate pugmill type mixer to make up one batch.
In Drum type Plant the heating, drying and blending of aggregates with the binder takes in the same drum wherein the feeding of aggregates & binders and output of hot mix asphalt is continuous. This type of plant gives higher production rate and are easy & simple to operate. They are cheaper compared to batch type plant.
Regardless the type of Asphalt Mixing Plant, the basic purpose is the same to produce the quality hot mix asphalt to be used for road construction.
Mobile hot mix asphalt plants for sale absolutely fulfill the necessities of contractors handling small projects such as village road, parking lots and PMGSY Works. They are also very appropriate for secondary roads, chiefly in rural areas. The efficiency of asphalt drum mix plants are up to 150 tons of hot mix asphalt product at every hour.
In Mobile asphalt drum mixing plant, different size virgin aggregates are stored in multiple feeder bins. Each bin is fitted with manually operated gates and belt conveyor driven by variable speed motor to preset the proportion of the aggregates to be discharged from each bin. Aggregates from all bins are received on gathering belt which transfers them on to single deck scalping screen for oversize material removal.
The heated aggregates then travel to the secondary zone (Coating zone) where they are mixed with the pre-metered binders (asphalt & additives) to produce the hot mix asphalt. The hot mix asphalt is transferred to the storage silo or directly into the tipper by load out conveyor fitted with gob hopper. All the operation of the asphalt plant or mobile stabilized soil mixing plant is controlled from the control room by the control panel.