Part 1

LB3000+1500 Integrated Environmental Hot Recycling Asphalt Mixing Plant
Technical Specification

Heze Zhenhua Machinery Manufacturing Co., Ltd.
HEZE ZHENHUA MACHINERY MANUFACTURING LIMITED COMPANY

LB3000 Environmental Protection and Energy-Saving Asphalt Mixing Plant
Technical Parameters

Section 1 — Overall Parameters of LB3000 Model
Production capacity: 240–360 t/h under rated working conditions with continuous feeding.
Fuel consumption: ≤6.5 kg per ton under rated conditions.

Rated working conditions include:

1. Aggregate moisture content: 3%

2. Finished material temperature: 140°C

3. Ambient temperature: 20°C

4. Working site altitude: below 1000 meters

5. Fuel type: heavy oil or natural gas with a calorific value of 9500 kcal/kg

6. Aggregate gradation entering the mixing equipment must be correct and compliant with specification requirements.

Measurement accuracy:
Aggregate: ±0.5%
Filler: ±0.5%
Asphalt: ±0.25%

Dust removal efficiency (after baghouse filtration):
Dust emission: <50 mg/Nm³
Ringelmann blackness: < Grade 1
Environmental noise: <70 dB(A), measured at 20 meters from the maximum noise source

Other parameters:
Total installed power: 900 kW
Total equipment weight: approximately 500 tons
Required site area: length 58 m, width 52 m

Section 2 — Component Parameters of LB3000 Model

1. Aggregate Feeding System (Primary Batching System)
   Cold aggregate bins: five units
   Each bin capacity: 10 m³
   Feeding port size: 3.6 m (length) × 2.45 m (width)
   Loading height: 2.32 m
   A grating is installed at the feeding port to prevent oversized materials from entering the bin.

Belt feeders: five units
Belt size: 500 mm (width) × 2.79 m (length)
Production capacity:
Sand: 100 t/h
Aggregate: 100 t/h (aggregate size <40 mm)
Variable frequency motor:
Motor power: 2.2 kW
Adjustment ratio: 20:1
Accuracy: ±2%

Two bin-wall vibrators installed on the sand bin walls
Motor power: 250 W

One collecting belt conveyor
Motor power: 5.5 kW (with reducer)
Belt width: 700 mm
Production capacity: 360 t/h

One inclined belt feeder
Motor power: 5.5 kW (with reducer)
Belt width: 700 mm
Production capacity: 360 t/h

Reclaimed material bins: two units
Each bin capacity: 10 m³
Feeding port size: 3.6 m × 2.45 m
Loading height: 2.32 m
Grating installed at feeding port to prevent oversized materials.

Reclaimed belt feeders: two units
Belt size: 500 mm × 2.79 m
Variable frequency motor:
Motor power: 2.2 kW
Adjustment ratio: 20:1
Accuracy: ±2%

Two bin-wall vibrators installed on reclaimed sand bins
Motor power: 750 W

Environmental system:
Baghouse dust collector: 100 filter bags
Induced draft fan power: 15 kW
Axial fans and ducts: multiple sets

2.1 Drying Drum
Drum size: 2.5 m diameter × 10 m length × 16 mm thickness
Drive method: four friction-drive support rollers
Drive motors: 4 × 22 kW (four reducer motors)
Insulation: 50 mm high-temperature insulation felt with stainless steel outer cladding
Production capacity: 240 t/h

Temperature control:
Temperature measurement: thermal resistance sensor
Measurement error: <±5°C

2.2 FRD-JZ3000 Burner — Main Technical Parameters
Maximum output power: 20 MW
Maximum fuel consumption: 1700 kg/h
Output adjustment ratio: 1:4
Main fuel: diesel, heavy oil, or fuel oil
Ignition fuel: acetylene gas
Flame length: approx. 5.6 m
Flame diameter: approx. 1.3 m
Flame temperature: approx. 1300°C
Combustion efficiency: >99%
Electrical power consumption: ≤30 kW
Compressed air consumption: ≤4.5 m³/min

Noise reduction method: reflective silencer

Air compressor:
Exhaust volume: 6 m³/min
Air pressure: 0.85 MPa
Motor power: 37 kW

Part 2

2.3.1 Recycled Material Drying Drum
Drum diameter: 1850 mm
Drum length: 10 m
Inclination angle: 3.0°
Drive motor power: 4 × 7.5 kW
Temperature rise: 120°C
Maximum aggregate size: 40 mm

Rated production capacity:
At 1% moisture content: 120 t/h
At 3% moisture content: 100 t/h

The drying drum adopts a four-wheel friction drive system. The transmission mechanism includes motor → reducer → drive roller → large ring gear of the drying drum.
The drum support frame is welded from H‑shaped steel. It is bolted to the platform to form the required drum inclination. Four sets of friction support rollers with built‑in roller bearings are installed on the frame. Two sets of thrust rollers are installed on both sides of the drum ring at the feeding end to limit axial movement and ensure stable operation.

The drying drum is welded from steel plates. After materials enter the drum, they are first conveyed horizontally through the flame zone by guide vanes to prevent the formation of a material curtain. After passing through the flame zone, the materials enter a specially designed lifting blade and chain section, where they are evenly dispersed in curtain form to ensure full heat exchange with the hot flue gas generated by the burner, thereby increasing material temperature efficiently.

2.3.2 Burner for Recycled Material Drum
FRD‑JZ1500 Burner — Main Technical Parameters
Maximum output power: 10 MW
Maximum fuel consumption: 850 kg/h
Maximum gas consumption: 980 m³/h
Output adjustment ratio: 1:4
Main fuel: heavy oil or fuel oil
Main gas valve diameter: DN100
Ignition fuel: acetylene gas
Flame length: approx. 3.5 m
Flame diameter: approx. 0.8 m
Flame temperature: 1300–1800°C
Combustion efficiency: >99%
Motor power consumption: 22 kW
Compressed air consumption: 3 m³/min

The burner control system allows remote automatic ignition and operating condition monitoring from the control room. It is equipped with automatic flameout protection, automatic fault diagnosis, and troubleshooting guidance to ensure safe and reliable burner operation.

2.3.3 Recycled Material Temporary Storage Bin
Storage volume: 6 m³

2.3.4 Recycled Material Weighing Bin
Volume: 2 m³

2.3.5 Weighing Method
Three‑point pressure load cell system

2.3.6 Discharge Door
Pneumatic operation

2.3.7 Environmental Sealing
Color steel plate enclosure

Part 3 — Screening, Weighing, and Mixing System

3.1 Hot Aggregate Elevator
Type: vertical, fully enclosed, double‑row ring chain, equipped with anti‑reverse brake motor
Lifting capacity: 360 t/h
Drive motor power: 30 kW (with reducer)

3.1.1 Recycled Material Elevator
Type: vertical, fully enclosed, double‑row ring chain
Lifting capacity: 180 t/h

3.2 Vibrating Screen
Type: high‑speed, inclined, five‑layer vibrating screen
Screening capacity: 360 t/h
Aggregate categories: five types
Drive motor power: 2 × 7 kW

3.3 Insulated Hot Aggregate Bins
Type: five‑compartment bin with 50 mm insulation layer
Total bin capacity: 80 tons
Material level detection: inductive level sensors
Temperature detection: sand bin equipped with temperature sensor
Additional features: overflow pipe installed
Control system: electric‑pneumatic discharge system with coarse and fine weighing for each aggregate type

3.4 Aggregate Weighing Hopper
Type: single hopper, four‑point pressure weighing
Weighing capacity: 4500 kg
Weighing system: four load cells with transport locking bolts
Additional features: maintenance access port in dust‑proof chamber
Control system: electric‑pneumatic discharge operation

3.5 Asphalt Weighing Hopper
Type: single hopper, insulated, heated by thermal oil, three‑point pressure weighing
Capacity: 300 kg
Weighing system: three load cells with transport locking bolts
Asphalt feeding method: gravity flow into mixer
Control system: electric‑pneumatic discharge
Additional feature: automatic asphalt overfill protection

3.6 Filler Weighing Hopper
Type: single hopper, sealed door, three‑point pressure weighing
Capacity: 400 kg
Weighing system: three load cells with transport locking bolts
Control system: electric‑pneumatic discharge

3.7 Weighing System Features
All weighing hoppers operate on independent sensor groups. Weight signals are transmitted to the control room via cables. Processed signals can be displayed digitally for manual operation or used for automatic control.

3.8 Insulated Mixer
Type: twin‑shaft paddle mixer with thermal‑oil‑heated mixing chamber
Rated mixing capacity: 4000 kg per batch
Drive motor power: 2 × 55 kW (with reducers)

Mixer production performance:
Mixing cycle: 45 seconds
Mixing capacity: 300 t/h

3.9 Mixing Tower
3.9.1 The mixing tower assembly is equipped with maintenance lifting equipment.
3.9.2 Truck passage under the tower: width 6.9 m, height 3.9 m

Part 4

Section 4 — Asphalt Supply System
System configuration: two standard asphalt storage tanks with indirect thermal‑oil heating and automatic temperature control, plus one asphalt mixing tank with indirect thermal‑oil heating and automatic temperature control.

4.1 Asphalt Storage Tanks
Quantity and capacity: three tanks, each with a capacity of 50,000 liters
Heating method: indirect heating through thermal‑oil coil heat exchangers
Insulation: thermal insulation layer with corrugated steel outer cladding
Liquid level detection: continuous level indicators
Mixing device: two mixers, one per tank

4.2 Asphalt Unloading Pit
Capacity: 1.6 m³
Type: screw pump with thermal‑oil insulation
Drive motor power: 5.5 kW
Pump body insulation: thermal‑oil heating

4.2 Asphalt Transfer Pump
Type: screw pump with thermal‑oil insulation
Flow rate: 35 m³ per minute
Drive motor power: 15 kW
Pump body insulation: thermal‑oil heating

4.3 Thermal Oil Heater
Model: RL130L.C
Burner: fully automatic ignition and monitoring, diesel temperature control, automatic protection
Heating capacity: 800,000 kcal/h
Maximum oil temperature: ≤260°C
Thermal oil circulation pump: high‑temperature centrifugal pump, flow rate 30 m³/h, pressure 1.6 MPa, motor power 5.5 kW
Control system: programmable computer control with automatic monitoring of temperature, oil circulation, oil level, and oil pressure; automatic alarm and burner start/stop
Thermal oil: supplied by user (supplier can recommend oil type based on operating temperature requirements)

Section 5 — Filler Supply System

System configuration: filler supply system installed within the tower frame, consisting of new filler silo, reclaimed dust silo, pneumatic discharge butterfly valves, screw conveyors for metering, pneumatic valves, and associated dust collection, safety, and control components.

5.1 New Filler Silo
5.1.1 Silo Body
Volume: 45 m³
Feeding method: pneumatic conveying from bulk powder truck via interface
Over‑pressure protection: automatic pressure relief device on top of silo
Level detection: inductive level sensors
Anti‑arching system: compressed‑air arch‑breaking device to ensure smooth powder flow

5.2 Reclaimed Filler Silo
5.2.1 Silo Body
Volume: 45 m³
Feeding method: elevator feeding
Over‑pressure protection: automatic pressure relief device on top of silo
Level detection: inductive level sensors
Anti‑arching system: compressed‑air floating device to improve powder flow
Excess dust handling: elevator return feeding, excess dust discharged after humidification

5.3 Screw Conveyors
Quantity: three units
Dimensions:
219 mm diameter × 4000 mm length × 7.5 kW
219 mm diameter × 3500 mm length × 5.5 kW
219 mm diameter × 4000 mm length × 11 kW

Section 6 — Dust Collection System

System type: primary gravity settling + secondary baghouse filtration
Primary dust removal performance: separation of dust particles ≥75 μm
Secondary dust removal performance: dust emission ≤50 mg/Nm³ (can reach 15 mg/Nm³ after aggregate washing)
Maximum air handling capacity: 147,000 m³/h at 115°C
Normal operating temperature: 100–150°C

6.1 Primary Dust Collector
6.1.1 Dust Collector
Type: gravity dust removal
Features: installed at the inlet of the secondary dust collector; equipped with wear‑resistant plates and adjustable guide plates to regulate settling particle size (typically ≥75 μm during operation). Dust is returned to the hot elevator via screw conveyor for reuse.

6.1.2 Screw Conveyors
Quantity: two units
Dimensions:
219 mm diameter × 4000 mm length × 7.5 kW
219 mm diameter × 3500 mm length × 5.5 kW

6.2 Baghouse Dust Collector
Type: atmospheric reverse‑pulse cleaning system
Filter bag material: latest NOMEX bags, 500 g/m², silicon‑treated for easy cleaning
Number of bags: 1120
Total filtration area: 1120 m²
Replacement method: top‑extraction
Cleaning method: electromagnetic pulse reverse blowing, group‑timed with adjustable intervals
Temperature monitoring: thermocouple with display, control, and over‑temperature protection
Adjustable airflow restrictor: multi‑blade type, remotely operated from control room
Pressure differential monitoring: differential pressure gauge with remote display, monitoring negative pressure at drum outlet
Structure: rainproof insulated enclosure with corrugated steel outer shell
Additional features: cage ladder, platforms, guardrails, and safety maintenance devices

6.2.1 Induced Draft Fan
Type: centrifugal
Power: 160 kW
Airflow: 74,000 m³/h at 115°C

6.2.3 Dust Recovery System
Return method: pneumatic conveying via elevator into reclaimed filler silo
Elevator motor power: 11 kW

6.2.4 Waste Dust Humidifier
Quantity: one unit
Power: 15 kW

Section 7 — Finished Material Silo

Type: bottom‑mounted silo
Capacity: 100 tons
Receiving corridor installed
Front and rear rolling doors with remote control
Photo‑oxygen ion treatment device for asphalt fume decomposition
System power: 22 kW
Axial fans and ducts: multiple sets

Part 5 — English Translation (continued)

Section 8 — Control System
System type: large‑screen LCD computer‑based control system, consisting of one LCD monitor for operation control and another LCD monitor for management functions.
Weighing and mixing control modes: manual, semi‑automatic, and fully automatic.
Power supply: 380 V / 220 V (±5%), 50 Hz, three‑phase four‑wire system.

8.1 Motor Control
Control method: circuit breaker with short‑circuit protection, overload protection, and contactor control
Operation method: push‑button operation with automatic protection

8.2 Weighing Control System
Weighing control: computer program control with color display
Functions include: automatic weighing, automatic correction of discharge deviation, asphalt over‑weigh protection, formula input, and printing output

8.3 Mixing Control
Control method: computer‑based automatic program control
Operation modes: manual, fully automatic, and manual input of mixing temperature

8.4 Burner Control
Control method: computer‑based automatic program control
Functions: automatic start, ignition, safety monitoring, and automatic fault protection

Section 9 — Paint Coating

9.1.1 Standard plant structure color: gray; dust collection system: silver‑white
9.1.2 If the user requires other colors, it must be specified at the time of order

User‑Supplied Items

The following items must be provided by the user:

1. Transformer and all cables required from the control room to the transformer. The supplier may provide reference cable specifications upon request.

2. Lubricating oil, grease, and thermal oil required for the equipment.

3. Sand, stone, cement, and other materials required for foundation construction.

4. Power system uses a single‑circuit three‑phase four‑wire supply. Any special requirements must be stated in the contract.

5. Lightning rod.

Section 10 — Major Purchased Components for Asphalt Mixing Equipment

This section lists the main external components supplied by partner manufacturers for the asphalt mixing plant.
Note: Due to continuous technical upgrades, actual delivered components may vary slightly.
Standard configuration can be customized according to customer requirements.

(原文为表格，但你要求“无表格”，因此以下为纯文字结构化描述)

Cold aggregate feeding system includes:
Cold aggregate bins (manufactured by Shandong Zhenhua), feeder motor reducers (Guomao), vibrating motors (domestic brand), frequency converters (Delta Taiwan), belts (Qingdao), flat belt conveyors (Shandong Zhenhua), and related reducers.

Drying drum system includes:
Drum manufactured by Shandong Zhenhua, drive motor reducers by Guomao, roller bearings and thrust bearings by TMK USA, and thermocouple sensors from Shanghai.

Burner system includes:
Heavy‑oil burner model FRD‑JZ3000 from Wuhan Furuidar, 50‑m³ heavy‑oil tank from Shandong Luhong, and ceramic fiber insulation materials.

Mixing tower system includes:
Aggregate elevator, reducer motors, chain wheels, ring chains, vibrating screen motors (Italy OLI Wolong), screen meshes (Beijing Hongxing), hot aggregate bins, pneumatic cylinders (Shanghai Xinyi), level sensors (Liaoyang), mixer reducers (Guomao), load cells (Ruima), and finished material silo (Shandong Zhenhua).

Dust collection system includes:
Induced draft fan (Jinan Chuangke), baghouse dust collector (Hebei Huanke), internal screw conveyors, waste dust humidifier, reducers, pneumatic cylinders, and thermocouples.

Filler storage system includes:
New filler silo, level sensors, butterfly valves, top dust collector, screw conveyors, reclaimed filler silo, waste dust elevator, reducers, ring chains, and screw conveyors.

Pneumatic system includes:
Screw air compressors and air tanks from Zhejiang Kaishan.

Central control system includes:
Control room (Shandong Zhenhua), Schneider electrical components, Lenovo computer and monitor, HP printer, AUX air conditioner, and cables from Liaocheng Yanggu.

Asphalt heating and storage system includes:
Four 50‑m³ asphalt tanks (Shandong Luhong), 800,000‑kcal thermal oil heater (Hebei), insulation materials, burner (RIELLO), asphalt pump (Wuxi Xunfeng), insulated valves, and unloading pump.

Environmental system includes:
Cold aggregate dust collection system with baghouse and fans (Hebei Huanke), main tower dust and fume extraction system with sealed discharge corridor, spray tower, plasma photo‑oxygen unit, axial fans, and 22‑kW induced fan.

Recycling system includes:
Recycled cold bins, feeder reducers, vibrating motors, frequency converters, belts, conveyors, elevator, reducer motors, chain wheels, ring chains, recycled drying drum, reducers, bearings, burner FRD‑JZ1500, recycled material storage bin, weighing hopper, load cells, and pneumatic cylinders.

Section 11 — Special Tools Supplied with the Equipment

The following tools are included with the asphalt mixing plant:
Double‑ended box wrench set, double‑ended open wrench set, adjustable wrenches (two sizes), pliers, pipe wrench, flat file, flat‑head screwdriver, Phillips screwdriver, electrician’s screwdriver, machinist hammer, sledgehammer, high‑pressure grease gun, and oil can.
Note: Actual supplied tools may vary due to technical improvements.

Section 12 — Environmental Protection System

Main tower dust extraction system:
Additional dust extraction ducts and axial fans are installed around the discharge doors to capture asphalt fumes and dust. Fumes are transported by induced fan to a photo‑oxygen plasma treatment unit.
A fully enclosed truck passage approximately 15 meters long is added beneath the discharge area, equipped with fast‑rolling doors at both ends to prevent fume leakage.

Cold aggregate dust extraction system:
Cold aggregate bins and inclined belt conveyors are sealed. A dedicated baghouse with approximately 100 filter bags is added to collect dust generated during cold aggregate feeding.

Each cold bin is equipped with a butterfly valve that opens automatically when a loader is detected feeding material. Dust is extracted through ducts and sent to the dedicated baghouse.

All ducts, fans, elbows, connectors, and chimneys are fabricated from 3‑mm steel plates according to specified dimensions.

The supplier provides free installation and commissioning of the environmental system.

Part 6 — English Translation (continued)

Section 13 — Environmental Protection System for Asphalt Mixing Equipment

1. Main Tower Dust Extraction System
   Dust extraction ducts and multiple axial fans are installed around the discharge doors to capture asphalt fumes and dust generated during material unloading. The collected fumes are transported by the induced draft fan into the photo‑oxygen plasma treatment unit for purification.

A fully enclosed truck passage approximately fifteen meters long is added beneath the discharge area. Fast‑acting rolling doors are installed at both the front and rear ends to prevent asphalt fumes and dust from escaping during unloading operations.

The enclosure structure is fabricated using square steel tubes and color‑coated steel sheets according to specified dimensions. All components, including ducts, connectors, and panels, are manufactured from steel plates of designated thickness to ensure durability and airtight performance.

2. Cold Aggregate Dust Extraction System
   The inclined belt conveyor and cold aggregate bins are fully sealed to prevent dust leakage. A dedicated baghouse dust collector equipped with approximately one hundred filter bags is added to capture and treat dust generated during cold aggregate feeding and handling.

Each cold bin is equipped with an automatic butterfly valve. When the system detects that a loader is feeding material into a specific bin, the corresponding butterfly valve opens automatically. Dust is extracted through the ducting system and conveyed into the dedicated baghouse for filtration.

The ducting system includes axial fans, straight ducts, elbows, connectors, and chimneys, all fabricated from three‑millimeter steel plates. The system ensures efficient dust capture and safe discharge of treated air.

The supplier provides free installation and commissioning of the entire environmental protection system.

Part 7 — Additional Notes

The environmental protection system includes:
A sealed discharge corridor beneath the mixing tower, axial fans for localized extraction, a spray tower for preliminary fume treatment, a plasma photo‑oxygen purification unit for deep treatment, and an induced draft fan for negative‑pressure extraction.

The cold aggregate dust control system includes:
Sealed cold bins, sealed inclined belt conveyors, automatic butterfly valves, axial fans, dust extraction ducts, and a dedicated baghouse dust collector.

All components are designed to ensure compliance with environmental emission standards and to minimize dust and fume pollution during asphalt production.

Section 14 — Materials Used for Environmental Sealing and Dust Extraction Systems

The environmental protection system of the asphalt mixing plant consists of multiple subsystems designed to control dust, fumes, and emissions generated during production. All components are fabricated according to specified dimensions using structural steel, color‑coated steel sheets, and precision‑manufactured ducts and fittings.

Enclosed Truck Passage for Finished Material Discharge

A fully enclosed corridor is constructed beneath the discharge area of the mixing tower. This corridor prevents asphalt fumes and dust from escaping during truck loading operations.

1. The structure is built using square steel tubes of designated thickness and color‑coated steel panels of various lengths. Fast‑acting rolling doors are installed at both ends to maintain negative pressure and ensure containment of fumes.

Finished Material Silo Fume Collection System

A ring‑shaped duct is installed around the discharge area of the finished material silo. Multiple axial fans extract fumes and dust generated during unloading.

The ducting system includes straight ducts, connectors, and front‑rear extraction ducts, all fabricated from three‑millimeter steel plates.

2. The extracted fumes are transported to the photo‑oxygen plasma purification system for treatment.

Photo‑Oxygen Plasma Purification System

This system treats asphalt fumes through a combination of plasma ionization and ultraviolet photo‑oxidation.

It includes connecting ducts, elbows, straight pipes, a water tower, a photo‑oxygen purifier, an induced draft fan, and a chimney.

All ducts are manufactured from three‑millimeter steel plates, and the chimney is fabricated according to specified diameter and height requirements.

3. The system ensures that asphalt fumes are decomposed and purified before being released into the atmosphere.

Cold Aggregate Dust Extraction System

The cold aggregate feeding area is fully sealed using structural steel frames and color‑coated steel sheets.

A dedicated baghouse dust collector with approximately one hundred filter bags is installed to capture dust generated during cold aggregate feeding and conveying.

Axial fans extract dust from each cold bin through ducts of specified diameters and lengths.

Automatic butterfly valves open when loaders feed material into the bins, ensuring synchronized dust extraction.

4. All ducts, elbows, connectors, and chimneys are fabricated from three‑millimeter steel plates.

Installation and Commissioning

5. The supplier provides free installation and commissioning of the entire environmental protection system, including the main tower dust extraction system, cold aggregate dust extraction system, photo‑oxygen plasma purification system, and all associated ducting and fans.