China Suppliers Factory Solid Asphalt Electric Melting Device for Efficient On-Site Heating and Melting Solution
Core Function
Directly melt solid asphalt: Block / Barrel-packed cold asphalt → Pumpable liquid.
Temperature control and insulation: Precise temperature control to prevent asphalt aging and coking.
Environmentally friendly and safe: No open flame, no smoke, no thermal oil / steam system.
Fast feeding: Continuous discharge, used with buffer tank and filter.
Typical Structure
Main Body
Tank body: Vertical cylinder, carbon steel + insulation layer (rock wool / silicagel)
Electric Heating Elements
- Built-in heating rods / electric heating tubes (stainless steel, far-infrared)
- Bottom / side wall heating plates / heating jackets
- Heating cables (auxiliary insulation)
Internal Divisions
- Feeding area: Solid asphalt input
- Melting area: Main heating for melting
- Insulation area: Melted asphalt at constant temperature
- Sludge area: Bottom slag discharge
Attachments & Safety
- Feed port, discharge port, sewage port
- Level gauge, thermometer, temperature control cabinet
- Explosion-proof electrical equipment, overheat protection
- Stirring (optional): Accelerates melting
Working Principle
- Solid bitumen is added from the top.
- Electric heating elements directly heat, local rapid melting.
- Solid blocks are immersed in liquid bitumen to accelerate melting (heat conduction + convection).
- Temperature control system maintains 140–180℃.
- Liquid bitumen is discharged by the lower discharge pump.
- Impurities settle at the bottom and are regularly discharged.
Main Types
Box type / Small unit
Capacity: 0.5–5m³
Best for: On-site construction, small batch, mobile
Vertical continuous tank
Capacity: 5–20m³
Best for: Carbon, waterproof, continuous production
Electric heating drum separator
Special for 200L standard drum bitumen
Features: Drum frame, automatic separation, rapid melting
Advantages (vs Thermal Oil/Steam)
System simple: No boiler, no circulation, no pipelines.
Installation fast: Plug in and use immediately.
Temperature control precise: ±5℃ accuracy, preventing bitumen aging.
Environmentally friendly: No smoke, no leakage, low noise.
Safe & Low Maintenance: Explosion-proof, no oil pumps or complex valves.
Application Scenarios
Carbon factory (pre-baked anode, electrode paste)
Waterproof sheet and coating production
Road construction sites & modified asphalt
Bitumen warehouse and small batch supply
Difference from Thermal Oil Units
| Feature | Electric Heating | Thermal Oil |
|---|---|---|
| Structure | Simple, compact | Complex system |
| Control | Precise temperature control | General control |
| Capacity | Small to medium | Large capacity |
Frequently Asked Questions
Q1: What is the typical temperature range for these melting units?
A: The temperature control system typically maintains the asphalt between 140–180℃ to ensure it remains liquid and pumpable without aging.
Q2: Can this equipment handle barrel-packed asphalt?
A: Yes, we offer specialized electric heating drum separators designed specifically to melt and separate 200L standard drums efficiently.
Q3: Is the electric melting tank environmentally friendly?
A: Absolutely. Unlike traditional systems, it uses no open flames, produces no smoke, and has no risk of thermal oil leakage, making it very clean.
Q4: How does it prevent the asphalt from coking or aging?
A: It uses high-precision temperature sensors and a control cabinet that maintains a stable heat within ±5℃, preventing local overheating.
Q5: What maintenance is required for the electric melting unit?
A: Maintenance is very low because there are no oil pumps, complex valves, or circulation pipelines to clean. Regular inspection of electrical elements is sufficient.
Q6: Is it suitable for mobile construction sites?
A: Yes, the box-type and small electric melting units (0.5–5m³) are compact and designed for easy transport and rapid installation on-site.