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  Asphalt Mixing Plant
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    Our company provides a range of modern stationary asphalt plants for all purpose.Trough years of
experience our company has developed its unique product program,covering all plant sizes in the
range of 40-320t/h.Our plants characterizes flexibility,accessibility,performance,a minimum of
maintenance and easy operation.
    Through 20 years of valuable feedback from our customers,we have accumulated experience and
knowledge second to none regarding the construction of asphalt plants.This ongoing development
gives you comfort to choose our asphalt plant now and in the future.

Model LBJ500 LBJ800 LBJ1000 LBJ1500 LBJ2000 LBJ3000 LBJ4000
Capacity 30-40t/h 50-64t/h 60-80t/h 90-120t/h 120-160t/h 180-240t/h 240-320t/h
 
Asphalt Mixing Plant
Cold Feed Bins

Cold bin furnished with 4-6 individual compartments, each furnished with a vibratory feeder. Vibratory feeders are supplied to meet specific aggregate conditions and capacities. All feeders discharge onto a horizontal gathering belt feeder which carries material through cold belt conveyor of the dryer.
·Imported Frequency Inverter for Belt Feeders, places typical magnetic speed controller.
·Speed adjustment of Frequency Converter in control room, easy operates, visible on screen, reliable operation, stable accuracy adjustment, and low malfunction performance.
·No flow switches for every hopper, signal to control room for run out of aggregate or blockage.
·Bin wall Vibrators for sands hoppers, avoid material blockage; meshes for hoppers, avoid oversize aggregate to system, provides reliable operation of system.
·Equipped with pre-vibrated screen device, located at inlet position of Inclined Conveyor, screen out large  aggregate without enter Dryer Drum, effectively reduces foul material of system.
·Reduce foul material benefits save energy, increase heat efficiency, protect Dryer Drum, increase reliable operation of Hot  Elevatorand Screen Deck, and finally increase working life of equipment.

 
Dryer Drum

·Cylindrical shape Dryer Drum inclined 3.5o angle approx., low height installation, low centre of gravity, stable and reliable rotation.
·Friction roller driven type of Dryer Drum is driven by 4 simultaneous motors, smooth rotation, low noise; improved the impact force and high level of noise of typical chain and gear ring driven.
·Rational layout of Dryer Lifters increase aggregate drying efficiency. Bolt and nut connect Lifter bases with Drum body, electric welded Lifters could avoid deformation and loosening.
· Mineral wool insulation wraps Drum body, increase heat efficiency, lower down fuel consumption, increase drying capacity; stainless steel plate cladding, shining outlook.
·Bottom scraper for aggregate discharge of Dryer Drum: low position outlet, constant and smooth output of aggregate.
·Dryer Drum air ducting equipped with negative pressure sensor, signals negative pressure of Dryer Drum to control for instant adjustment of Exhaust Fan Damper, whose angle could be shown on control panel. Therefore, the system being proper navigated, thus the Burner works under optimal condition.


 
asphalt mixing plant
Burner Unit

Adopt imported assemble special type of Burner, which is a high pressure, low noise and proportional adjust burner, diesel oil, heavy oil or natural gas as fuel, double times ignition, stable, even and complete burning. According to the comparison of sensed temperature by sensor and set temperature, executes the PID adjustment of output capacity, perform fully automatic operation of Burner.

 
Pollution Control Unit

Primary Dust Collector
The capacity of device collects up to 60% dust, whose size is 0.075 mm or up. The collected coarse particles are delivered to hot elevator for reuse.
Baghouse Dust Collection (Secondary Collection)
·The type of Secondary Collection is High Pressure Pulse Filter Bag Dust Collector. Filter bags use heat-resistant Nomex cloth, assure long working hours under rated high temperature, long lifetime and good dust collection efficiency. The system collects 0 to 0.075 mm dust, which had past from Primary Dust Collector. The dust collecting efficiency of filter bags could reach 99.5% or up, which is higher than that in nation environment regulation.
·To handle high dust content, we put the bags in different houses(individual compartments). During the operation, one of the housing closed from the air ducting. Thus the suction force from exhaust fan is smallest, then the bags being cleaned by compressed air blowing. Optimal dust collection result could be achieved.
·Horizontal constructed Dust Collection System; insulated for upper portion of bag house, avoid condensation of dust during operation. Angular steel plate for cladding.

 
Vibrate Screen

4 decks vibrate screen, inclined angle approx. 15o, high strength manganese steel wire mesh, easy access for replacement of meshes. The shape of screen meshes are higher in the middle, dented at two sides, arch-like cross-section, increase screening surface for better production, capable to increase screen efficiency and accuracy of screening.
Eccentric single shaft mechanism vibration device, strong impact-vibrate force, bath lubrication for bearings of eccentric shaft, highly increase its durability.

asphalt mixing plant
 
asphalt mixing plant
Hot Aggregate Bin and continuous type level indictor

The aggregate bins have compartments that correspond to the screen and the fractions of hot material passing through it. Discharge from the aggregate bin is possible via a number of pneumatic gates, actuated by air cylinders to ensure coarse and fine dosing at the highest accuracy. Each compartment has equipment for continous level control, while a temperature sensor can be built into each compartment.

 
Scales

The mixing tower holds three scale hoppers, suspended on load cells above the mixer; one for aggregate, one for bitumen and one for filler.
The scale hoppers use international well-know brand weighing module.

 
 
asphalt mixing plant
Mixers

Sturdy, minimum of wearing, and long lifetime are key words for the twin-shaft mixers. Our asphalt mixers are driven by speed reducers (directly connected to motors), which has the advantage of absorbing extreme peaks of loads. Wear parts for mixing arms, claws and walls are cast using a hard wearing alloy and the shapes of these replaceable parts are designed to minimize wearing and tearing.
The pneumatic operated discharge gate is designed as an upside down sector gate.

 
Asphalt Supply&Storage System

The asphalt in asphalt tank is maintained at a constant temperature by the hot oil heater, in which thermo-oil is heated by the oil burner and circulated by the pump. An automatic temperature control regulates the combustion rate of the oil burner automatically.
The asphalt in this cylindrical tank of indirect heating type is heated by hot oil circulation, which causes the asphalt, due to the absence of partial direct heating, to be heated uniformly and thoroughly and keep the constant temperature at all times.



Control System

System equipped with Siemens electrical elements, provide stability for long time usage. Start-sequence Protective Circuit for the motor drive control circuit, thus guarantee the safety and reliable of motion of the working processes. Frequency inverter for cold feed bins motor drive increases the accuracy of speed adjustment.
Control System: Computer control system equipped with famous brand industrial computer control system (or named Data Processor). This system obtains high performance of Anti-invade and reliable operation. The Control System receives the data from Operation Processor, which handle the deviated figures during hot asphalt production.
Then the Data Processor performs the mode of operation management, such as automatically process the amendment of Free Fall value and also the over weight value by gravity. So the production process could be controlled reliably thus the fully automatic operation could be obtained.
The system equipped the weighing scales, which are capable to accurately control the weighing tolerance.
All the procedure of production could be effectively controlled in Central Control Room, capable to interchange between the modes of fully automatic, semi-automatic and manual production.
The system monitoring the temperature of 6 places: (i) hot aggregate discharged from Dryer Drum; (ii) hot asphalt mix discharged from mixer; (iii) aggregate in Hot Bin; (iv) bitumen temperature; (v) hot asphalt mix temperature in hot mix storage bin and (vi) cold air door control temperature.

asphalt mixing plant asphalt plant

Model 

LBJ500

LBJ800

LBJ1000

LBJ1500

LBJ2000

LBJ3000

LBJ4000

Capacity:<5%Moisture

40t/h

64t/h

80t/h

120t/h

160t/h

240t/h

320t/h

Weighing 
accuracy

Aggregate

±0.5%

±0.5%

±0.5%

±0.5%

±0.5%

±0.5%

±0.5%

Asphalt

±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5%

Filler

±0.25% ±0.25% ±0.25% ±0.25% ±0.25% ±0.25% ±0.25%

Power (kw)

143

185

205

368

520

760

1052

Cold bins&
Output capacity

3×6m3
50T/H

4×6m3
65T/H

4×6.5m3
80T/H

4×6.5m3
120T/H

4×8m3
200T/H

5×15m3
>300T/H

6×6m3
>350T/H

Belt conveyor&
Convey capacity

width:600mm
60T/H

width:650mm
100T/H

width:650mm
100T/H

width:650mm
160T/H

width:650mm
200T/H

width:800mm
>300T/H

width:800mm
>350T/H

Drying drum(mm)

φ1225*5850

φ1450*6300

φ1540*6650

φ1950*7730

φ2300*8200

φ2750*10188

φ3000*12000

Dry capacity

40T/h

70T/h

100T/h

120T/h

160T/h

280T/h

360T/h

burner

Oil burner (China top brand or Foreight brand upon requirement) (optional)

Dudt filter system

Water type
(recommended)

Water type or baghouse type upon requirement 

Hot elevator capacity

60T/h

80T/h

100T/h

140T/h

180T/h

>320T/h

>340T/h

Vibrate screen

3 grades

4 grades

4 grades

4 grades

4grades

5 grades

6 grades

Vibrate screen capacity

50T/h

80T/h

100T/h

140T/h

200T/h

>300T/h

>320T/h

Hot bin(compartments)

4

4

4

4

5

6

Hot bin volume

8 m3

8 m3

10m3

22 m3

36.7 m3

80 m3

100m3

Mixer capacity

500kg/batch

800kg/batch

1000kg/batch

1500kg/batch

2000kg/batch

3000kg/batch

4000kg/batch

Mixing cycle 

45s

45s

45s

45s

45s

45s

45s

Asphalt tank volume 

30T*1

30T*2

30T*2

30T*3

30T*4

30T*6

30T*6

Hot mix storage bin

60T(Optional)

60T(Optional)

60T(Optional)

100T(Optional)

120T(Optional)

240T(Optional)

Cold aggregate bin

3bins*6m3

4bins*6m3

4bins*6m3

4bins*6m3

5bins*6m3

6bins*6m3

Dust filter system

Water type or baghouse type upon requirement

baghouse type

Dust emission

≤400mg/Nm3 water type    ≤100mg/Nm3 bagehouse type


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