Mobile Asphalt Mixing Plant
MDHB Mobile Asphalt Mixing Plant
A Mobile Drum Mix Asphalt Plant (also known as a portable continuous drum asphalt plant or drum-mix asphalt plant) is a compact, trailer-mounted asphalt manufacturing system designed for continuous production and frequent relocation between job sites.
Capacity available: 20t/h to 100t/h
Fuel: diesel, heavy oil, gas or coal
Control system: PLC Auto
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PRODUCT DESCRIPTION
Henan Shengmao Machinery Co., Ltd. manufactures the MDHB Series Mobile Drum Mix Asphalt Plants (covering capacities from 20 to 100 TPH20 to 100 TPH), engineered specifically for regional road paving, rural road network hardening, highway widening/maintenance, and remote infrastructure projects across Southeast Asia, Latin America, Central Asia, and Africa.
1. Key Characteristics & Working Principle:
1). Continuous Drying & Mixing in One Drum: Unlike batch-type plants that use tower-mounted screens and separate twin-shaft pugmills, a drum mix plant combines aggregate drying, heating, and liquid bitumen (asphalt cement) coating into a single continuous rotating drum.
2). Integrated Trailer Mobility: The cold aggregate bins, drying/mixing drum, burner, bitumen pump, dust collector, and control cabin are mounted on integrated wheeled trailer chassis equipped with kingpins, road axles, tires, and mechanical leveling jacks.
3). Streamlined Operation & High Fuel Efficiency: Aggregates are continuously proportioned on variable-speed conveyor belt scales and fed directly into the drum, where hot bitumen is injected in the downstream mixing zone, discharging hot mix asphalt (HMA) directly into haul trucks or a skip hoist storage silo.
4). Economic & Rapid Deployment: With a simplified structural layout and low connected electrical power demand, it can be transported, set up, and commissioned within 1 to 2 days with zero concrete foundation requirements.
2. Key System Components & Engineering Highlights
1). Cold Aggregate Proportioning Unit:
3 to 4 modular aggregate hoppers mounted on the front trailer section.
Equipped with variable-frequency drive (VFD) feeder belts and electronic belt scales to deliver continuous, synchronized aggregate dosing (±1.5%±1.5% accuracy).
2). Continuous Counter-Flow / Parallel-Flow Drum:
Heavy-duty steel drum body with wear-resistant internal flight configurations that create a dense, uniform "aggregate curtain" for maximum heat exchange.
Thermal insulation jacket wrapped in stainless steel to minimize radiation heat loss and lower fuel consumption to 5.5−7.0 kg per ton of asphalt.
3). High-Efficiency Multi-Fuel Burner:
Compatible with Light Diesel, Heavy/Furnace Oil, Natural Gas (LNG/CNG), or LPG.
Fully automated proportional burner control with electronic spark ignition and optical flame-failure safety protection.
4). Liquid Bitumen Supply & Precise Metering System:
Variable-speed bitumen metering pump coupled with high-precision flow meters (±1.0%±1.0% dosing accuracy).
Direct low-pressure spray injection inside the mixing zone of the drum to ensure aggregate particles are completely and uniformly coated.
5). Two-Stage Environmental Dust Collection:
Primary Stage: Volute cyclone / expansion box separator capturing coarse dust and returning it to the mix.
Secondary Stage: High-efficiency multi-venturi wet water scrubber or compact pulse-jet Nomex baghouse filter (≤50−100 mg/Nm3≤50−100 mg/Nm3).
6). Heavy-Duty Mobile Trailer Chassis:
Road-ready semi-trailer chassis with standard tractor fifth-wheel kingpins, multi-leaf springs, air brake lines, and quick-locking mechanical landing gear for rapid 1−2 day erection.
7). Centralized PLC & Manual Automation Cabin:
Air-conditioned weather-proof operator cabin with PLC touchscreen interface, real-time formula monitoring, fault self-diagnostics, and manual override switches.
PARAMETERS
MDHB series of mobile asphalt mixing plant
|
Model |
MDHB20 |
MDHB40 |
MDHB60 |
MDHB80 |
MDHB100 |
|
Production Capacity (T/h) |
20 |
40 |
60 |
80 |
100 |
|
Mixing Type |
Continuous |
Continuous |
Continuous |
Continuous |
Continuous |
|
Dust Remove Effect (mg/Nm3) |
≤100 |
≤100 |
≤100 |
≤100 |
≤100 |
|
Fuel Consumption (kg/t) (Oil) |
5.5-7 |
5.5-7 |
5.5-7 |
5.5-7 |
5.5-7 |
|
Fuel Consumption (kg/t) (Coal) |
10-13 |
10-13 |
10-13 |
10-13 |
10-13 |
|
Aggregate Weighing Accuracy(%) |
±1.5 |
±1.5 |
±1.5 |
±1.5 |
±1.5 |
|
Bitumen Weighing Accuracy(%) |
±1 |
±1 |
±1 |
±1 |
±1 |
|
Total Power (kw) |
50 |
75 |
128 |
165 |
200 |
CORE PARAMETERS
Capacity available: : 20t/h to 100t/h
Fuel: diesel, heavy oil, gas or coal
Control system : PLC Auto
CORE SELLING POINT
Continuous 2-in-1 Drum Drying & Mixing
Combines aggregate drying, heating, and liquid bitumen coating into a single continuous rotating drum. Continuous flow design eliminates mixer dwell waiting cycles, delivering steady, high-volume hot mix asphalt (HMA) production.
Ultra-Low Connected Power & Energy Economy
Connected electrical load is only 50 kW to 200 kW (significantly lower than batch tower plants). Operates economically on smaller, portable diesel generator sets, substantially lowering daily operating fuel costs on remote sites. Optimized internal flight design ensures an even aggregate curtain, maintaining fuel consumption at 5.5−7.0 kg of oil per ton of asphalt.
Fast Modular Trailer Mobility (1−2 Days Setup)
Built on compact 1 to 2 heavy-duty semi-trailer chassis equipped with standard towing kingpins, road axles, tires, air brakes, and mechanical leveling outriggers. Features pre-assembled cable harnesses and quick mechanical couplers, enabling rapid relocation, erection, and commissioning in 24 to 48 hours.
True Zero-Foundation Design
Operates directly on leveled, compacted gravel pads with heavy-duty outrigger support footings. Requires no concrete foundations or ground excavation, eliminating civil engineering costs and leaving zero concrete waste on site.
Low Capital Investment (CapEx) & Streamlined Maintenance
Eliminating hot aggregate elevators, vibrating screen decks, and twin-shaft pugmills lowers purchase costs and reduces mechanical wear points. Fewer moving parts mean lower spare parts inventory, minimal daily maintenance, and rapid payback on investment (ROI).
Multi-Fuel Burner Adaptability
Compatible with Light Diesel, Heavy / Furnace Oil, Natural Gas (LNG/CNG), or LPG to adapt to local fuel availability and pricing.
RECOMMENDED USAGE SCENARIOS
Rural Road Hardening & Farm-to-Market Access Roads
High-efficiency continuous paving across widely distributed rural corridors and regional networks.
Highway Widening, Shoulders & Base Course Stabilization
Producing black base course, binder layers, and asphalt-treated permeable bases along moving road corridors.
Remote, Island & Mountain Infrastructure
Projects with strict transport logistics and limited electrical grid access where low generator power draw is mandatory.
Short-to-Medium Term Subcontract Paving
Paving contracts where establishing permanent civil foundations is economically unfeasible.
Municipal Road Resurfacing & Industrial Access Paths
Rapid deployment for township streets, parking lots, logistics parks, and industrial access paving.
FAQ
Q1:What models and capacities does the Shengmao MDHB Series offer?
A1:
A: The Shengmao MDHB mobile continuous drum series covers outputs from TPH20 to 100 TPH, including:
MDHB20: 20 TPH (≈50 kW)
MDHB40: 40 TPH (≈85 kW)
MDHB60: 60 TPH (≈120 kW)
MDHB80: 880 TPH (≈160 kW)
MDHB100: 100 TPH (≈200 kW)
Q2:How does a continuous drum mix plant (MDHB) differ from a compulsory batch plant (YLB/QLB)?
A2:
A: Mixing Process: MDHB heats, dries, and mixes aggregates with bitumen continuously inside one rotating drum. Compulsory batch plants (YLB/QLB) screen hot aggregates into multiple sizes and weigh each ingredient separately before mixing in a twin-shaft pugmill.
Power & CapEx: MDHB requires 50%−70% less electrical power and has a significantly lower purchase price and faster 1−2 day setup.
Target Application: MDHB is ideal for rural roads, base courses, and general road paving; YLB compulsory batch plants are designed for top-tier expressways and airport runways requiring strict multi-fraction aggregate re-screening.
Q3:Does the MDHB mobile drum asphalt plant require concrete foundations?
A3:
A: No. The entire system is trailer-mounted on heavy-duty steel chassis with integrated mechanical landing legs. It sits directly on flat, compacted ground, making it a true foundation-free mobile solution.
Q4:What environmental dust collection systems are provided?
A4:
A: Shengmao offers a two-stage dust collection configuration:
Primary Stage: Volute cyclone separator to capture coarse dust particles and return them directly into the mix.
Secondary Stage: High-efficiency multi-venturi wet water scrubber (standard) or compact pulse-jet Nomex baghouse filter (optional) to meet local emission requirements (≤50−100 mg/Nm3).
Q5:How is the plant transported between jobsites?
A5:
A: The entire plant is integrated onto 1 to 2 road-ready semi-trailer chassis with standard tractor kingpins, pneumatic air brakes, and multi-leaf spring suspensions. It can be folded into transport dimensions and towed directly by standard prime movers / tractor trucks.
Q6:Can the MDHB plant operate in high-temperature or high-altitude environments?
A6:
A: Yes. Shengmao customizes electrical components (380V/50Hz, 220V/60Hz, 440V/60Hz), heavy-duty thermal insulation jackets, desert dust filtration, and high-altitude derated burner/generator configurations to ensure reliable performance worldwide.
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