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Our Aggregate Dryer is specifically designed for various sand and stone aggregates, available in single-drum rotary and triple-pass rotary configurations to meet different capacity and energy-saving requirements. Utilizing rotary drum drying technology combined with wear-resistant design, efficient lifting plate systems, and dust collection systems, it rapidly reduces aggregate moisture from 5%-20% down to 0.5%-3%, meeting the raw material specifications of concrete batching plants, asphalt mixing plants, and dry-mix mortar production lines.
Single-Drum Dryer: Simple structure, lower capital investment, easy maintenance—ideal for small to medium-scale operations or budget-conscious customers.
Triple-Pass Dryer: Thermal efficiency exceeding 80%, 50% less floor space, 40%-60% lower energy consumption—ideal for large-scale continuous production.
The Aggregate Dryer is widely used in the following industries:
| Application | Typical Materials | Post-Drying Use | Value Proposition |
|---|---|---|---|
| Concrete Batching Plants | Sand, crushed stone, gravel | Ready-mix concrete, precast components | Ensures mix proportion accuracy, improves concrete strength |
| Asphalt Mixing Plants | Sand, stone | Asphalt mixture (paving material) | Strict moisture control prevents asphalt foaming, improves pavement quality |
| Dry-Mix Mortar Plants | Dried sand | Masonry mortar, plastering mortar, flooring mortar | Moisture <0.5%, meets dry-mix mortar standards |
| Manufactured Sand Production | Washed manufactured sand | Construction sand | Dewater and dry, prevent caking, facilitate transport and storage |
| Gypsum/Cement Raw Materials | Gypsum rock, limestone | Cement/gypsum production lines | Reduce moisture, improve grinding efficiency |
| Road Base Materials | Crushed stone, gravel | Highway, railway subgrade | Control moisture content, ensure compaction |
| Feature | Single-Drum Dryer | Triple-Pass Dryer |
|---|---|---|
| Thermal Efficiency | 50%-65% | Above 80% |
| Footprint | Larger | 50% less |
| Energy Consumption | Baseline | 40%-60% lower |
| Equipment Length | Longer | Only 1/3 of single-drum |
| Capital Investment | 30%-40% lower | Higher |
| Maintenance | Simple & easy | Slightly more complex |
| Applicable Scale | Small to medium | Large-scale continuous production |
Common Advantages:
Wear-Resistant Design: Aggregates have high hardness and abrasiveness. The cylinder is made of wear-resistant steel or lined with wear-resistant liners, and lifting plates undergo hardfacing welding—extending service life by 2-3 times.
Efficient Lifting Plate System: Large-lift-angle design creates a uniform material curtain with no drying dead zones.
Adjustable Moisture Content: Discharge moisture can be precisely adjusted between 0.5%-5% to meet different industry requirements.
Flexible Heat Sources: Options include pulverized coal hot air furnaces, natural gas combustion chambers, biomass hot air furnaces, oil burners, or waste heat recovery systems.
Environmental Compliance: Fully sealed negative pressure operation with high-efficiency pulse baghouse filter achieves dust emissions below 20mg/Nm³.
PLC Fully Automatic Control: Real-time monitoring of temperature and moisture, one-touch start/stop, stable and reliable.
The Triple-Pass Aggregate Dryer uses three concentric cylinders nested inside each other, dividing the drying process into three stages:
Outer Cylinder (Co-current): Wet aggregate enters the outer cylinder where high-temperature hot air (300°C-550°C) flows in the same direction, rapidly evaporating surface moisture.
Middle Cylinder (Counter-current): Material enters the middle cylinder where hot air flows in the opposite direction. The middle cylinder is surrounded by the outer and inner cylinders, creating a self-insulating system that fully utilizes heat for deep dewatering.
Inner Cylinder (Reciprocating): Material enters the inner cylinder where specially designed rectangular multi-loop lifting plates create a "two steps forward, one step back" movement pattern, extending residence time for uniform drying to the target moisture.
Discharge & Dust Collection: Dried aggregate is discharged, and exhaust gas is purified by a dust collector.
The triple-pass structure achieves thermal efficiency exceeding 80%, equipment length only 1/3 of single-drum, and 40%-60% lower energy consumption.
| Model | Cylinder Dia. (m) | Length (m) | Capacity (t/h) | Initial Moisture | Final Moisture | Power (kW) |
|---|---|---|---|---|---|---|
| ATD-2010 | 2.0 | 10 | 15-30 | 5%-15% | 0.5%-3% | 78 |
| ATD-2210 | 2.2 | 10 | 25-50 | 5%-15% | 0.5%-3% | 85 |
| ATD-2510 | 2.5 | 10 | 40-80 | 5%-15% | 0.5%-3% | 110 |
| ATD-2512 | 2.5 | 12 | 50-100 | 5%-15% | 0.5%-3% | 125 |
| ATD-2912 | 2.9 | 12 | 70-140 | 5%-15% | 0.5%-3% | 135 |
| ATD-2915 | 2.9 | 15 | 90-180 | 5%-15% | 0.5%-3% | 160 |
| ATD-3215 | 3.2 | 15 | 120-240 | 5%-15% | 0.5%-3% | 185 |
| Model | Cylinder Dia. (m) | Cylinder Length (m) | Capacity (t/h) | Initial Moisture | Final Moisture | Power (kW) |
|---|---|---|---|---|---|---|
| AD-1.2×10 | 1.2 | 10 | 5-15 | 5%-15% | 0.5%-3% | 22 |
| AD-1.5×12 | 1.5 | 12 | 10-25 | 5%-15% | 0.5%-3% | 37 |
| AD-1.8×14 | 1.8 | 14 | 15-35 | 5%-15% | 0.5%-3% | 55 |
| AD-2.0×16 | 2.0 | 16 | 20-50 | 5%-15% | 0.5%-3% | 75 |
| AD-2.2×18 | 2.2 | 18 | 30-70 | 5%-15% | 0.5%-3% | 90 |
| AD-2.4×20 | 2.4 | 20 | 40-90 | 5%-15% | 0.5%-3% | 110 |
| AD-2.6×22 | 2.6 | 22 | 55-120 | 5%-15% | 0.5%-3% | 132 |
Two Configurations to Match Your Needs: Based on your capacity, budget, and site conditions, we offer single-drum and triple-pass options. Single-drum offers lower investment and simple maintenance; triple-pass offers energy savings, smaller footprint, and higher efficiency.
Significantly Reduce Operating Costs: Triple-pass dryers save 40%-60% energy, saving substantial fuel costs annually. For a 100,000-ton-per-year dried sand plant, a triple-pass dryer saves approximately $20,000-40,000 per year compared to a single-drum.
Improve Product Quality: Dried aggregates with stable moisture (0.5%-3%) ensure accurate mix proportions and final strength of concrete/asphalt, reducing customer complaints.
Wear-Resistant & Durable, Minimize Downtime: Using wear-resistant materials and hardfacing processes to combat high abrasiveness, resulting in long equipment life and low maintenance costs.
Global Service Network: Products exported to over 60 countries including the US, Germany, Australia, Saudi Arabia, UAE, Russia, India, and Vietnam. We provide overseas installation guidance and commissioning.
EPC Turnkey Capability: From material testing and process design to installation, commissioning, and personnel training—complete turnkey services.
Choose the right aggregate dryer for your needs—single-drum for economy and simplicity, triple-pass for energy efficiency and high capacity. Contact us today for a free process solution and quote!
Get Your Customized Solution:
Request a Quote → Tell us your capacity, material type, and heat source availability—we will respond within 24 hours
Schedule a Technical Discussion → Speak one-on-one with our drying engineer to get the best machine recommendation
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