High Capacity Liquid Asphalt Storage Tank System - China Suppliers & Factory for Asphalt Mixing Solutions
Product Description
A liquid asphalt storage tank is a sealed steel tank used for long-term, large-capacity storage of high-temperature liquid asphalt. It is the core equipment for material storage, thermal insulation, and transfer in asphalt mixing plants, modified asphalt production lines, waterproofing membrane manufacturing, and the carbon industry, providing a stable source of asphalt for the entire production system.
Main Classification
By Structure
- Horizontal asphalt storage tank: Most commonly used, standard for job sites/asphalt mixing plants. Capacity 5–100 tons, movable, fast installation, small footprint.
- Vertical asphalt storage tank: Large fixed storage tank, capacity 100–5,000 tons, used for asphalt depots and large mixing plants, high storage capacity.
By Heating Method
- Thermal oil circulation heating: Most recommended. Uniform heating, no asphalt coking or aging, stable temperature control. Industry mainstream.
- Fuel oil/gas direct heating: Fast temperature rise, low cost, suitable for remote job sites.
- Electric heating: Clean with no open flame, suitable for waterproofing and small repair projects.
Core Structure
- Inner tank: Q235B carbon steel (6–10 mm), resistant to high-temperature corrosion. Equipped with localized rapid heating zone and ultra-low extraction port.
- Insulation layer: 100–150 mm high-density rock wool/aluminum silicate with aluminum cladding. Temperature drop <1°C/h.
- Outer shell: Carbon steel protective cladding, weatherproof against rain and sun.
- Auxiliary systems: Automatic temperature control (130–160°C), asphalt pump, level gauge, pressure gauge, and breather valve.
Key Technical Features
Localized Rapid Extraction
Only heats the discharge zone instead of the entire tank, saving energy and preserving asphalt quality.
Constant Temperature
Maintains fluid state throughout storage, preventing solidification, carbonization, and degradation.
Environmental Protection
Equipped with breather valve and fume collection system to reduce emissions.
Common Specifications
| Small Job Sites | 5t, 10t, 20t Horizontal Tanks |
| Medium Mixing Plants | 30t, 50t, 80t, 100t Horizontal Tanks |
| Large Asphalt Depots | 200t – 2000t Vertical Tanks |
Operating Principle
Hot liquid asphalt is fed into the tank from an asphalt melter or unloading system. The internal coils continuously heat the tank, maintaining the asphalt at a constant temperature in a fluid state. During production, the asphalt pump draws asphalt from the tank bottom, passing it through a filter and heater before delivering it to the process. Impurities settle at the tank bottom and are periodically removed through the drain port.
Difference from Buffer Tank
- Liquid Asphalt Storage Tank: Large capacity, long-term storage, overall heating, main material storage.
- Asphalt Buffer Tank: Small capacity, short-term transfer, pressure stabilization and degassing, intermediate link.