The function of an Asphalt Plant
will be to combine asphalt aggregates and other additives in essential
proportion as per job mix formula and at elevated temperature to produce a
homogeneous hot mix.
There are basically two kinds
(based on layout) of Plants (1) Batch Mix Plant (Discontinuous type) and (2)
Drum Combination Plant.(Continuous type)
In Asphalt Drum Mix Plant, heating and
drying of aggregates occurs in rotary drum and heated aggregates are screened
weighed & in hot bins for proportioning prior to mixing with binder in
different pugmill type mixer to make up one batch.
In Drum kind Plant the heating,
drying and combining of aggregates with the binder takes in the same drum where
in feeding of aggregates & binders and production of hot mix asphalt is
constant. This kind of plant gives higher production rate and is easy &
simple to operate. They are more affordable compared to batch type plant.
Regardless the type of Asphalt
Mixing Plant, the basic purpose is the same to make the quality hot mix asphalt
to be utilized for road construction.
The fundamental components of
Asphalt Drum Mix Plants are Multiple Chilly Aggregate Feeder Bins, Single Deck
Scalping Display, Slinger Conveyor, Rotary Drum, Burner, and Load out Conveyor,
Asphalt Tank, Mineral Filler Unit, Fuel Service Tank, Wet Scrubber and Control
Panel with Insulated Control Cottage. These plants can be in mobile (portable)
in addition to stationary variant to satisfy the customer's selection.
In Asphalt Batch Mix Plants, different
size virgin aggregates are kept in multiple feeder bins. Each bin is fitted
with belt conveyor driven by variable speed motor to preset the proportion of
the aggregates to be discharged from every bin and manually controlled gates.
Aggregates from all bins are received on collecting belt which transfers them on
to single deck scalping screen for oversize material removal. The screened
aggregates are then transferred to rotary drum by slinger conveyor. High
pressure jet oil burner fitted at indeed side of the rotary drum dries &
heats the aggregate in main zone of the drum. The heated aggregates
subsequently go to the secondary zone (Coating zone) where they are blended
with the pre metered binders (asphalt & additives) to produce the hot mix
asphalt. The hot mix asphalt is transferred out conveyor or directly into the
tipper by load to the storage silo. All the procedure of the plant is
controlled from the control room by control panel.
Please see www.kaushikengineeringworks.com
for additional details on Asphalt Plant and other Road Construction
Machines.
