LB3000 Asphalt Mixing Plant – Technical Specifications (Gas Burner Type)

Quoted Price: 5.9 million RMB

HEZE ZHENHUA MACHINERY MANUFACTURING LIMITED COMPANY

Technical Specifications of LB3000 Batch-Type Asphalt Mixing Plant

Product Name: Asphalt Mixing Plant

Product Model: QLB3000

I. Production Capacity

Rated Capacity: 180–240 t/h (under standard working conditions)

Standard Conditions:

Altitude ≤1000 m, standard atmospheric pressure, cold aggregate moisture 5%, ambient temperature 20°C, aggregate discharge temperature 160°C, mixing cycle 45 seconds, medium-grade asphalt mixture.

Conditions affecting production capacity:

1. Moisture refers to surface moisture; internal moisture reduces drying drum output.

2. Ambient temperature assumed at 20°C.

3. Output includes mineral powder and asphalt weight.

4. Aggregate density: 1600 kg/m³

5. Aggregate gradation must meet specification.

6. Mineral powder density: 1120 kg/m³

7. Aggregates must not be porous, flaky, or loose.

8. Altitude affects fuel calorific value.

9. Capacity based on medium-grade asphalt mixture.

II. Static Weighing Accuracy

Aggregate: ±0.5%

Filler: ±0.25%

Asphalt: ±0.25%

III. Dust Removal Efficiency

Dust emission ≤50 mg/Nm³

IV. Temperature Stability

Hot aggregate discharge temperature: ±5°C

Finished product discharge temperature: ±3°C

V. Environmental Noise

≤85 dB(A)

VI. Equipment Operating Reliability

≥95%

VII. Operation Modes

1. Fully automatic

2. Semi-automatic

3. Manual

VIII. Overall Dimensions (including finished product silo)

Length: 49 m

Width: 40 m

Height: 25 m

IX. Installed Power and Total Weight

Total Installed Power: ≈680 kW

Total Weight: 280 t

X. Technical Specifications of Each Assembly

The plant consists of the following major systems:

1. Aggregate Feeding System (Primary Batching System)

Components: Cold aggregate bins + belt conveyors (5 units)

Type: Integrated modular structure with frequency-controlled feeding

1.1 Five Aggregate Bins (3+2 combination)

Bin capacity: 10 m³ each

Feeding opening: 3.6 m × 3 m

Loading height: 3.0 m

Safety grating installed at bin opening

1.2 Five Belt Feeders

Belt size: 600 mm × 3000 mm (sidewall belt)

Speed control: Imported frequency inverter

Motor power: 3 kW

Speed ratio: 1:45

Accuracy: ±2%

1.3 Two Bin Wall Vibrators

Motor power: 0.5 kW × 2

Function: Ensures smooth material flow

1.4 Collecting Belt Conveyor

Drive: Drum drive

Motor power: 7.5 kW

Belt width: 650 mm

Capacity: ≥300 t/h

1.5 Feeding Belt Conveyor

Type: Direct feeding into drying drum

Drive: Drum drive

Motor: 7.5 kW

Belt width: 650 mm

Capacity: ≥300 t/h

2. Drying System

2.1 Drying Drum

Drum size: φ2.5 m × 10 m

Shell thickness: 18 mm

Material: 20Mn boiler steel

Drive: 4 × 22 kW motors via universal couplings and friction rollers

Thrust rollers: 2 cast steel rollers

Support rings: 2 thermal expansion-mounted rings

Lifting blades: 8 mm thick, material 16Mn

Inlet box: With smoke channel and inspection door, labyrinth seal

Outlet box: Labyrinth seal

Insulation: 50 mm rock wool + stainless steel outer shell

Drum speed: 7.3 r/min

Installation angle: 3.5°

2.1.1 Temperature Control

Sensor: Thermal resistance

Accuracy: ≤±5°C

2.2 Main Burner (Gas Type)

Model: FRD-TR3000

Maximum output: 18 MW

Maximum gas consumption: 1900 m³/h

Adjustment ratio: 1:6

Main fuel: Natural gas

Gas valve group diameter: DN150

Flame length: ~4.8 m

Flame diameter: ~1.1 m

Flame temperature: ~1800°C

Combustion efficiency: >99%

Power consumption: ≤45 kW

Compressed air consumption: ≤1 m³/min

Matching asphalt plant capacity: 240 t/h

3. Screening, Weighing, and Mixing System

3.1 Hot Aggregate Elevator

Type: Vertical, fully enclosed, automatic chain tensioning

Capacity: ≥320 t/h

Motor: 30 kW

Chain: Double-row roller chain

3.2 Vibrating Screen

Type: Linear internal vibration

Motor: 7 kW × 2

Frequency: 1000 rpm

Amplitude: 6–8 cm

Five-deck mesh set:

3×4, 10×10, 15×15, 22×22, 33×33 mm

Screening area: 39.6 m²

Capacity: ≥360 t/h

Dust enclosure: Fully enclosed, connected to secondary dust collector

3.3 Hot Aggregate Bins

Type: 5 bins

Total capacity: 40 m³

Gate type: Rotary

Level detection: Level sensor

Temperature detection: Sensor in sand bin

Includes overflow, waste discharge, sampling port

3.4 Hot Aggregate Weighing Hopper

Type: Single hopper, 3-point support

Range: 3000 kg

Sensors: 3 load cells

Dust seal: High-temperature rubber seal

Discharge: Pneumatic control

3.5 Asphalt Weighing Hopper

Type: Single hopper, insulated, thermal oil heating

Capacity: 300 kg

Sensors: 3 load cells

Discharge: Pneumatic

Asphalt flows into mixer by gravity

3.6 Filler Weighing Hopper

Type: Conical hopper

Capacity: 450 kg

Discharge: Pneumatic butterfly valve

Screw conveyor: φ325 mm × 3420 mm, 5.5 kW

Sensors: 3 load cells

3.7 Mixer

Type: Twin-shaft heavy-duty mixer

Rated capacity: 3000 kg per batch

Drive: Motor + cycloidal reducer + synchronous gears

Motor: 45 kW × 2

Liner life: ≥150,000 batches

Blade life: ≥50,000 batches

Discharge gate: Flip-type

Lubrication: Centralized lubrication system

4. Asphalt Supply System

Type: 3 asphalt tanks, thermal oil indirect heating, automatic temperature control

4.1 Asphalt Tanks

Quantity: 3 × 50 t

Heating: Thermal oil coil

Insulation: 50 mm insulation + galvanized sheet

Level detection: Float level gauge

Agitators: 2 units

4.2 Asphalt Unloading Pit

Capacity: 2 t

Transfer pump: 7.5 kW

4.3 Asphalt Pump

Type: Thermal-oil-heated screw pump

Flow: 52.6 m³/h

Motor: 15 kW

4.4 Thermal Oil Heater

Model: RL130 (800,000 kcal)

Fuel: Diesel

Max temperature: ≤260°C

Thermal oil pump: 2.2 kW

Gear pump: 2.2 kW

Fuel pump: 0.75 kW

Control: Fully automatic monitoring and protection

Thermal oil: User supplied (recommended 6 tons)

4.5 Thermal Oil Pipeline

Large main loop + multiple branch loops with valves

5. Filler Supply System

Upper silo: New filler

Lower silo: Reclaimed filler

Type: Vertical silos + pneumatic butterfly valves + screw conveyors

5.1 New Filler Silo

Capacity: 45 m³

Feeding: Pneumatic tanker or Roots blower

Overpressure protection: Automatic relief valve

Dust control: Bag filter + automatic cleaning

Level detection: Upper and lower

Anti-bridging: Air hammer

Includes ladders and safety rails

5.2 Reclaimed Filler Silo

Capacity: 45 m³

Feeding: Elevator

Level detection: Upper

Anti-bridging: Air nozzles

Includes ladders and safety rails

5.3 Screw Conveyors

Quantity: 2

Size: φ273 mm × 2410 mm

Motor: 5.5 kW × 2

Capacity: 60 t/h

6. Dust Collection System

Type: Primary gravity + secondary baghouse

Primary separation: ≥75 μm

Secondary emission: ≤50 mg/Nm³

Max airflow: 95,000 m³/h

Working temperature: 100–175°C

Max temperature: 216°C

6.1 Primary Dust Collector

Cyclone + baghouse integrated

Gravity separation

6.2 Secondary Baghouse

Pulse-jet cleaning

Bag material: 500 g/m² silicon-treated

Bag quantity: 896

Filter area: 1014 m²

Bag replacement: Top removal

Temperature monitoring: Thermocouple + protection

Pressure monitoring: Differential pressure gauge

Structure: Rainproof, insulated, double dust hoppers

Includes ladders, platforms, handrails

6.2.1 Rotary Discharge Valve

Quantity: 1

Size: φ300 × 300 mm

Power: 1.5 kW

6.2.2 Dust Discharge Screw Conveyor

Quantity: 1

Power: 4 kW

Humidifier: 11 kW

6.2.3 Main Induced Draft Fan

Type: Centrifugal

Power: 160 kW

Airflow: 74,000–95,000 m³/h

6.2.4 Chimney

Height: 7.5 m

6.2.5 Dust Recycling System

Elevator: 11 kW

Screw feeder: 3 kW

7. Finished Product Silo

Bottom-mounted, 100 t capacity

8. Control System

PLC + upper-computer management

Weighing and mixing: Manual, semi-automatic, automatic

Power supply: 380V/220V ±5%, 50 Hz, 3-phase 4-wire

8.1 Motor Control

Breaker + short-circuit + overload protection

Button operation + automatic protection

8.2 Weighing Control

Computer-controlled

Color display

Automatic weighing

Automatic compensation

Asphalt over-weigh protection

Recipe input and printing

Secondary weighing

8.3 Mixing Control

Computer automatic program

Manual / semi-automatic / automatic

Recipe input

8.4 Burner Control

Automatic program control

Auto start, ignition, monitoring, fault protection

8.5 Control Cabin

Size: 7.6 m × 2.8 m × 2.2 m

Comfort: Equipped with air conditioner

9. Lightning Protection

Not included; user may install if required.

FRD-TR Series Natural Gas Burner Configuration List

(Translated exactly as provided; all items preserved)

1. Burner Body

• Burner: 1 unit

• Flame detector HH-Z1: 2 sets (Honeywell UV probe)

• Ignition booster: 1 set

• High-energy igniter HGD-20: 1 set

• Electric air damper: 1 set

2. Gas Valve Group

• Gas filter: 1

• Gas inlet shut-off ball valve: 1

• Pneumatic quick shut-off ball valve: 2

• Electric flow control butterfly valve: 1

• Pneumatic ignition ball valve: 1

• Pneumatic vent valve: 1

• Drain valve: 1

• Gas pressure gauge: 1

3. Safety Protection Devices

• High gas pressure switch (0–40 kPa): 1

• Low gas pressure switch (0–20 kPa): 1

• Leak detection switch (0–20 kPa): 1

• Air pressure switch (0–1 kPa): 1

• Compressed air protection switch (0–1 MPa): 1

4. Control System

Burner control cabinet FRD-BMC-3: 1

• (Siemens PLC, Omron relays, Schneider electricals, Delta touchscreen)

• Distribution box: 1

• Flame detection box: 1

• Aggregate temperature sensor PT100: 1

5. Fan System

• High-pressure fan: 1

• Base and fasteners: 1 set

Main External Component Suppliers

1. Control System: Siemens PLC, Zhimai weighing instrument, Schneider

2. Drying System: Furuidar gas burner

3. Screening System: Beijing Hongxing screen mesh

4. Weighing / Hot Bin / Main Tower:

   • Pneumatic components: Shanghai Xinyi

   • Air compressor: Kaishan

   • Sensors: Ruima

5. Gearbox and Bearings:

   • Gearbox: Jiangsu Guomao

   • Bearings: Timken

6. Motors: Siemens

7. Baghouse Dust Collector Bags: Hebei Huanke

8. Asphalt Heating Tank and Pump System:

   • Asphalt tanks: Shandong Wucheng

   • Asphalt pump and plug valve: Zhejiang Qingtian Shanggui

Special Tools Supplied with Equipment

1. Double-end ring spanner set (8 pcs) – 1 set

2. Double-end open spanner set (8 pcs) – 1 set

3. Adjustable wrench 36×300 mm – 1

4. Adjustable wrench 55×450 mm – 1

5. Wire pliers 200 mm – 1

6. Pipe wrench 45×350 mm – 1

7. Flat file 250-II – 1

8. Flat screwdriver 200×8 mm – 1

9. Phillips screwdriver 200×8 mm – 1

10. Electrician screwdriver 100×5 mm – 1

11. Machinist hammer 0.5 kg – 1

12. Octagonal hammer 8.2 kg – 1

13. High-pressure grease gun – 1

14. Oil can 1 kg – 1

Note: Actual configuration may vary due to technical upgrades.