ABH 2500 ASPHALT HOT MIX PLANT is designed and developed by our company, using Australia ARAN technique. Its main performance gets to the level of oversea homogeneous product. It is fit to produce high-grade road, asphalt material of surface and base. The equipment uses craft of positive mixing, batch discharge. Several of sandstone material and powder lot, bitumen can be weighed by electronic scale, controlled by industrial computer, easy operation, and reliable performance.
1) Hopper adjusts quantity of material by belting in control room.
2) Optimization designed Turn—down rig of dryer drum which has a logical placement is either to improve efficiency or to avoid overheat of aggregate.
3) Hot material elevator use high-strength and deadweight chain-driven with hold-back device, life is long life is long, convenient maintenance, fine reliability. Degree of wear with influx construction is small, drive is stable with fluid coupling and the degree of impact is small.
4) Screening plant which uses circular screen with double axle and five layers and five specs is high in efficiency, not easily blocked. Vibrancy bearing is outside to avoid vibrancy bearing overheat problem.
5) Discharge door of Storage bin is double ones which has big gap, avoiding block and leakage of material。The door can be operated solely to control error of falling of aggregate, truly realizing rough and fine measurement.
6) Filler storehouse use pneumatic sliding chute to discharge stuff, no arch starting, no remains in the discharge hopper. Speed of discharge is fast.
7) Stuff door of aggregate measuring hopper is double, avoiding block and leakage of material, rough and fine stuff can be discharged according to sequence which is ordered.
8) End sealing of axle use root form, avoiding leakage of stuff. Lining board in mixer is made of high-strength wearing material. Discharge door of mixer is form of push and pull, discharge hole is big, time of discharge is short, reliability is good. High-fast mixing is fast, uniform and thorough.
9) Dust filter system has two grades, the first is cyclone filter, after filter, the filler goes into the hot elevator and recycled. The second grade is bag filter. Efficiency of dust filter is improved very greatly. Bag filter is used in the second filter. Plus monitoring and burner control is linked, avoiding error operation to bring tail gas pollution, protecting bag.
10) Burner which can fire light and heavy oil uses imported name brand, blaze is wide and short, length is adjustable, controlled with imported industrial computer, easily study and understand, high precision, good reliability. Printer can print working table. Electric components use domestic and foreign name brand, guaranteeing reliability of hardware.
Productive Capacity
Mixer batch: 2500kg/batch
Average moisture content 5%, mix period 45s, output 200t/h. (medium-grain material)
Average moisture content 5%, mix period 60s, output 150t/h. (fine material)
Discharge Temperature140~160°C
Correlative Condition of Production Capacity
Conditions concerned with output are as follows:
1. Average moisture content only refers the surface moisture content, moisture content inside will lower the output ability of drying drum.
2. Ambient temperature is 20℃.
3. Material density is 1600kg/m3.
4. Output includes filler and bitumen.
5. The proportion of aggregate must be correct and the specifications must meet the standard demand.
6. Filler density is 1120kg/m3.
7. Altitude 1000m.
Technical Parameter, Quantity of Main Equipment
Cold Aggregate Supply System
Cold aggregate hopper
Capacity of hopper: 10 m³ 5 pieces
Width of charging hopper: 3500 mm
Height of charging hopper: 3500 mm
Belt feed system
Frequency control
Decelerating Electromotor: 2.2kw 5 pieces
Aggregate conveyor
Decelerating Electromotor: 5.5kw 1 piece
Incline belt conveyor
Decelerating Electromotor: 5.5kw 1 piece
Dry System
Dryer drum
Incline drum and reverse current drying, friction drive, with insulating layer.
Diameter 2.62m, length 9m 1 piece
Reductor FENNER SEW 4 pieces
Electromotor: Y180L-4 22kw 4 pieces
Thrust wheel 2 pieces
Installed angle 4º
Burner
For light and heavy oil: Italy Energy 1 piece
Burning capacity 1400 kg/h
Power of blower 56 kw
Oil pump 4 kW
Temperature sensor: there is a temperature sensor on discharge chute of dryer drum, with digital control device on console.
Control: operator can control firing, flameout, temperature automatically in the control room.
Production capacity and fuel consumption of dryer drum (environment temperature
20ºC)
Discharge temperature 160ºC
Cold sandstone moisture (%) 3 5
Output of drum (t/h) 240 280
Light diesel tank 20M³ 1pc
Mazut tank 20M³ 2pc
Oil supply system (Oil hot insulation work)
Hot Elevator
Capacity 220t/h
Electromotor Y180L-4 22 kw
Screen and Hot Preservation System
5 layer, 5 specs and 1 kind of waste material
Electromotor Y160L-4 15 kW x 2
Hot aggregate storehouse 5 pieces
Total capacity 35M³
Material level detection high and low level-sensing device
Gate of storehouse controlled by cylinder 2 cylinders apart and rough/ precise measurement
Heat preservation heat preservation by rock wool
Filler Feed System
New Silo storage capacity 50 m³
Spiral 7.5 kw
Old silo storage capacity 50 m³
Spiral 7.5 kw
Material level detection high and low level-sensing device
Used filler reclaim system (fan pump to reclaim storehouse)
Fan 1 pc
Motor 22 kw
Blower for filter: 7.5 kW 1 piece
Bitumen Storage and Supply System
Bitumen tank
Quantity and capacity 3×50m³
Heating mode indirect heating (heated oil coil pipe and heat exchanger)
Heat preservation mode thermal insulating layer, outer packing is slivering plate
Bitumen pipeline
Heat pipeline, equipped with manual reversing valve.
Unloading tank capacity 8m³ 1 piece
Bitumen feeding pump 11 kw 1 piece
Bitumen convey pump 11 kw 1 piece
Weighting System
Aggregate measuring hopper:
Type single hopper, four-point support, full close
Measurement capacity 2500 kg
Hang mode 4 sensors with capacity of 2 tons hanging, with fixable bolt
Discharge mode 2 cylinders control apart, and discharge material orderly
Control device electric-pneumatic control, rough and fine measurement
Sensor METTLER-TOLEDO 4 pieces
Bitumen Measuring Hopper
Type single, heat insulation, heated oil for heat preservation, three-point hanging
Capacity 450 kg
Hang mode 3 sensors with capacity of 0.3 tons, with fixable bolt
Bitumen feeding mode tee bitumen valve pneumatic control
Bitumen discharge mode the measured bitumen was sprayed into mixer to make mixing more even
Sensor METTLER-TOLEDO 3 pieces
Filler Measurement Hopper
Type single hopper, with closed gate, three-point hang
Capacity 500 kg
Hang mode 3 sensors with capacity of 0.3 tons, with fixable bolt
Filler feeding mode close and open with pneumatic chute and butterfly valve to realize feeding, rough and fine control.
Filler charge mode pneumatic chute and butterfly valve control
Sensor METTLER-TOLEDO 3 pieces
Measurement system features use automatically equalize fall, precision is high and speed of measurement is fast.
Measurement Precision
Bitumen ±0.25%
Stone filler ±0.35%
Stone ±0.5%
Mix System
Type forced mixer with horizontal and double axle
Rated capacity 2500 kg/batch
Reductor SEW 1 piece
Electromotor Y280M-4 75 kw 1 piece
High-strength scale board impeller life≥ 250,000 tons mixing material
Mixing period(s) 45 60
Mixing capacity (t/h) 200 150
Discharge gate heated oil for heat preservation
The First Grade Dust Filter
Cyclone dust filter (with blocking valve)
The Second Grade Dust Filter
Pulse back blowing bag dust filter system
| Material of bag | Filtering material imported from America, it’s very easy aspirating when working in resistant elevated temperature condition |
| Filter area | 780m² |
| Blowing mode | Pulse back blowing, pulse valve timing (time adjustable) |
| Blowing | |
| Temperature test | Thermo junction + temperature display, excess temperature protection |
| Differential pressure test | air pressure display by differential pressure meter |
| Whole structure | Rainproof and outer layer is heatproof |
| Thickness of dust exhaust | ≤80 mg/N m³ |
| Automatic gyration discharge valve | 2 pieces |
| Electromotor Y90S-4 | 1.1 kW |
| Air compressor | 2 pieces 11 kW |
| Draught fan | Air volume 92000m³/min |
| Electromotor | power 132 kw Y355M1-6 1 pc |
| Air door executing structure | 1 piece power 1.5 kw |
Pneumatic System
One air compressor is fixed on mixing plant, supply for tower, power 11 kw
Discharge and Final Product Storehouse System
Capacity of storehouse 100T
Heat preservation mode: 80 mm rock wool for heat preservation,
Heated oil for heating at Bottom, electricity heat for gate.
Discharge height 3.3m
Windlass power 55 kw frequency control
Heated Oil Heating System
Quantity of heat of heated oil furnace: 750,000 kcal. /h
Total power 20 kw
Cycle oil pump 15 kw
Burner imported and full automatic, fuel light oil
Control system control oil temperature automatically
Temperature of heat supply ≤260℃
Heated oil user preparation
Hot oil cycle pipeline supply for bitumen tank, fuel warm-up
Device, final product storehouse bitumen
Pipeline and so on.
Control System
System is made up of upper control computer, charge mixture controller, burning controller, temperature controller, PLC and so on. System finished working state controlling of each working segment, charge mixture measurement, Temperature control, management and all the functions that are needed by mixing plant working. At the same time, strict protection measures are installed, when machinery working appears abnormity, correlative devices are stopped automatically; alarm is displayed on the console.
This computer control system can enact various parameters of charge mixture process on display, completing initialization setting for each unit, after starting system, each item data can be measured and displayed, abnormity state is given alarm. At the same time, it can complete data storied during working procedure, working table printed and so on.
System structure: automatic control system is made up of upper control computer unit, power automatically control unit, charge mixture measurement and mixing control unit, heat for dust filter control unit, power distribution cabinet. Each unit is fixed in separate console respectively.
Control computer unit: host computer is fixed to frame under console board; display, keyboard and printer are fixed on console board.
Power distribution cabinet: system has one cabinet, electricity feeding in it independently, equipped with plus electricity breaker, installed capacity 750 Kw.
Control room: 20 feet standard container, there are windows on three sides, cold and warm dual air-condition.
Total power: 588 kw(Basic equipment)700 kw(whole equipment)
Total weight: 210 tons
