Asphalt Cold Mix Production Line

Product Introduction: What is an Asphalt Cold Mix Production Line

An asphalt cold mix production line is a complete set of special automated equipment for continuously producing asphalt cold mix at room temperature. Different from traditional hot-mix asphalt production lines that require high-temperature heating, it does not need to dry and heat aggregates and asphalt at high temperatures. It can complete the whole process of batching, mixing and discharging of cold-mix asphalt mixture under normal temperature, low temperature, rain, snow and humid environments.

Using modified asphalt, cold-mix additives, aggregates and mineral powder as raw materials, the equipment produces all-weather construction-ready, heat-free, long-term storable and ready-to-use asphalt cold mix through precise metering and low-speed constant-temperature mixing. It is a special intelligent production equipment for road pothole repair, emergency rescue and small-scale pavement projects.

How to Select Products: Mobile vs. Fixed Cold Mix Production Lines

(1) Scenarios for Choosing a Mobile Asphalt Cold Mix Production Line

1. Dispersed projects and multi-point construction: road maintenance, municipal repair, highway emergency rescue, and remote construction sites requiring frequent relocation.
2. Short-term and temporary projects: short construction period with site evacuation after completion, no need for long-term fixed land occupation.
3. Low-temperature/winter construction and emergency repair: unavailable hot-mix plants in sub-zero low temperature, rain or snow, requiring rapid on-site setup.
4. Medium and small output demand with flexible production: low daily output requirement, pursuing fast entry, commissioning and cost recovery.

(2) Scenarios for Choosing a Fixed Asphalt Cold Mix Production Line

1. Long-term stable supply and factory production: own asphalt cold mix processing plant for long-term external sales with large capacity demand.
2. Fixed plant and permanent land occupation: fixed industrial land without relocation, pursuing high capacity, stability and automation.
3. Large-batch continuous production: high daily output and 24-hour operation, requiring large storage silos, automatic feeding and intelligent central control system.
4. High-standard quality control: higher metering accuracy, mixing stability and finished product consistency than mobile models, suitable for large-batch national standard finished product production.

Advantages of Mobile Asphalt Cold Mix Production Line

1. Convenient relocation and flexible movement: integrated chassis trailer design, towable on roads, fast disassembly and assembly, commissioning on the same day of entry, no foundation or concrete ground required.
2. All-weather low-temperature production: full room-temperature process, normal operation at -30°C, unaffected by rain, snow and humidity, free from high temperature, seasonal and weather restrictions of hot-mix plants.
3. Extremely low commissioning cost: no drying combustion system, saving fuel and gas consumption, lower power and labor cost than hot-mix plants; construction period shortened from months to 1–3 days.
4. Simple and intelligent operation: fully automatic computer central control batching system, one-key start/stop, automatic metering of aggregates, asphalt, cold-mix additives and mineral powder, less labor required.
5. Outstanding finished product advantages: no heating for paving, direct filling and compaction in winter, strong adhesion, not easy to loose, long-term storable.
6. Environmentally friendly and pollution-free: no high-temperature combustion exhaust or dust drying emissions, low-temperature closed mixing, compliant with environmental inspections, operable in urban areas.

Applications and Scope of Use

Core Applications

Specialized production of asphalt cold repair mix for asphalt pavement pothole repair, crack filling, subgrade collapse rescue, municipal road maintenance, highway emergency repair, community pavement renovation, bridge pavement defect treatment and other rapid repair projects.

Scope of Application

1. Routine maintenance and pothole repair of municipal roads, highways, national/provincial roads and rural roads.
2. Emergency rescue and repair of pavements in low-temperature, rainy, snowy and icy winter conditions.
3. Small-scale pavement maintenance in restricted areas such as urban districts, parks and communities.
4. On-site mobile production for remote construction sites and dispersed multi-point maintenance projects.
5. Rapid treatment of small-area asphalt pavement defects, replacing traditional hot asphalt repair.

Components and Premium Parts of Mobile Asphalt Cold Mix Production Line

Complete Machine Components

Mobile chassis traction frame, aggregate batching and metering system, asphalt storage insulation tank, automatic cold-mix additive filling system, mineral powder screw feeding system, forced twin-shaft mixing host, finished product storage silo, fully automatic electric control central control system, pneumatic control system, dust removal environmental protection system, walking traction mechanism.

Premium Parts

1. High-precision weighing and batching system: variable frequency loss-in-weight metering, aggregate and mineral powder ratio accuracy ±0.5%, higher than ordinary belt batching, stable and non-segregating finished product ratio.
2. Constant-temperature insulation asphalt tank: low-speed tracing insulation, no high-temperature heating, maintaining asphalt fluidity, no solidification or pipeline blockage in winter.
3. Special cold-mix additive precision filling pump: corrosion-resistant quantitative metering pump, automatic accurate addition of cold-mix modifier, ensuring bonding strength and storage stability.
4. Forced twin-shaft non-dead-angle mixing host: low-speed shear mixing, uniform raw material mixing, no damage to asphalt modified structure, clean discharge without residue.
5. Integrated mobile walking chassis: heavy-duty I-beam frame, tire traction walking, road-compliant, no host disassembly for relocation.
6. PLC fully automatic intelligent control cabinet: touch screen one-key formula setting, automatic storage of multiple production formulas, real-time production data monitoring, automatic fault alarm.
7. Closed environmental protection dust removal device: fully closed mixing bin, no dust overflow, compliant with urban environmental production requirements.

Core Technical Parameters (Industry Standard, Customizable)

1. Equipment type: integrated mobile vehicle-mounted cold mix mixing production line
2. Theoretical hourly output: 10–60 t/h (customizable)
3. Raw material metering accuracy: aggregate ±0.5%, asphalt ±0.3%, additive ±0.2%
4. Applicable production temperature: -30°C ~ +45°C (room temperature, no heating/drying)
5. Mixing host type: forced twin-shaft asphalt special mixer
6. Total installed power: 35–95 kW
7. Asphalt tank volume: 5–30 m³ constant-temperature insulation tank
8. Relocation mode: towable trailer, no main body disassembly
9. Control mode: PLC fully automatic computer central control + manual emergency operation
10. Single batch capacity: 500 kg–2000 kg/batch
11. Site requirement: no concrete foundation or civil construction, flat ground available

Working Process

1. Formula setting: input production formula on central control touch screen, set ratios of aggregate, asphalt, mineral powder and cold-mix additives, system auto-saves.
2. Raw material feeding: load aggregates into batching bins, asphalt into constant-temperature tank, mineral powder into mineral powder bin, additives into special agent tank.
3. Automatic precise metering: system automatically weighs aggregates and mineral powder, screw-conveys to mixing host; asphalt and additives are accurately pumped simultaneously.
4. Closed forced mixing: twin-shaft host mixes at low speed, uniformly blends raw materials at room temperature to complete modified mixing.
5. Finished product discharge and storage: host opens to discharge, finished mix falls into silo for temporary storage and direct truck loading.
6. Continuous circulation: automatic entry into next batch after discharge, realizing continuous automated production.

Operating Precautions

1. Pre-start inspection: check asphalt pipelines and additive pumps for blockage, weighing sensors for zeroing, mixing host for foreign objects, tires and frame for stability; retract silos and fix the machine before relocation.
2. No unauthorized ratio changes: cold mix performance depends on formula; non-professionals are prohibited from adjusting ratios to avoid loose, non-sticky or unformable products.
3. Winter low-temperature notes: keep asphalt tank insulated; empty pipelines after shutdown to prevent solidification and blockage.
4. Safety during operation: do not open mixing bin access doors or insert hands/tools into host; cut off main power before fault maintenance.
5. Raw material control: use clean aggregates without excess soil; avoid expired asphalt or additives.
6. Environmental protection: keep mixing bin closed; do not remove dust removal devices; comply with local dust and exhaust regulations.
7. Shutdown procedure: empty residual materials from host, silos and pipelines, clean pumps and pipelines daily to prevent solidification and blockage.
8. Training requirement: operators must be professionally trained and familiar with central control logic; no unlicensed operation.

Price and Customization

Price Range (Mobile Lines by Hourly Output)

• Small mobile (10–20 t/h): economic entry-level, for small maintenance teams and emergency repair.
• Medium mobile (30–40 t/h): mainstream best-selling, for municipal maintenance and small processing plants.
• Large mobile (50–60 t/h): high-capacity, for multi-point bulk supply projects.

Fixed lines are quoted separately based on capacity, batching bin quantity and automation level.

Customization Services

1. Capacity customization: 10–100 t/h hourly output.
2. Configuration customization: upgraded asphalt tank, mineral powder bin, automatic feeding, remote monitoring.
3. Formula customization: winter low-temperature, general-purpose, high-strength cold mix formulas for local climate and aggregates.
4. Function customization: automatic loading, finished product insulation silo, mobile dust removal upgrade, explosion-proof electrical system.
5. Site customization: integrated trailer or split mobile models based on site size and relocation frequency.