A:
All Dongding dryers come with a 12-month warranty covering parts and workmanship from the date of commissioning. Lifetime technical support and spare parts supply are provided.
Introduction of Sand Rotary Dryer
Sand dryer, also known as the three layers of drum dryer, three return cylinder dryer, is designed and manufactured by our company on the basis of the single cylinder dryer by adopting the latest European energy-saving technology: mosaic structure.
Sand dryer is widely used for drying bulk and powder materials. It can dry river sand, silica sand, dry mortar, yellow sand, slag of cement plant, etc. It is widely used in building materials, chemical industry, foundry and other industries.
The heating source can be coal, oil and gas, etc.
Advantages of Sand Rotary Dryer
01
Long Service Life
Made of wear-resistant manganese plate, more wear-resistant than ordinary steel plate.
02
Good Output Effect
Reduces the initial moisture of about 15% to a final moisture below 0.5–1%.
03
Wide Application
The first choice for slag powder, GGBS and dry-mortar production lines in cement plants and other drying projects.
04
High Efficiency, Low Consumption
Thermal efficiency is over 40% higher than a single-pass dryer; coal consumption is one third and electricity is cut by 20%, with standard-coal consumption below 9 kg per ton.
05
Investment Cost Saving
Saves about 60% of floor area and about 60% of civil-construction investment, and is easier to install.
06
Low Investment & Fast ROI
Low equipment investment and operating cost with quick return on investment.
Working Principle of Sand Rotary Dryer
The raw material, sand, is conveyed to the inner cylinder by the feeder continuously and evenly , and is thrown and pushed forward by the spiral lifting board.
1. Raw Sand Feeding
Feeder continuously and evenly conveys sand into the inner drum
2. Inner drum: Lifting & Conveying
Spiral lifting boards throw and push material forward
3. Dispersing Curtain & Heat Contact
Intermediate dispersing device forms a material curtain for fuller heat contact
4.Triple-layer drum drying
Middle & Outer drum Drying
Semi-dry material enters the middle and outer drum for continued drying
5. Final Drying & Discharge
Material meeting the final drying requirement enters the discharge bin
Specifications of Sand Rotary Dryer
| Model | DDSΦ2.0×4.5m | DDS Φ2.0×5.4m | DDS Φ3.2×6.4m | DDSΦ3.6×8m |
| Outer Drum Diameter (m) | 2.0 | 2.5 | 3.2 | 3.6 |
| Outer Drum Length (m) | 4.5 | 5.4 | 6.4 | 8 |
| Drum Volume (m³) | 14.1 | 16.63 | 52.7 | 81.38 |
| Drum Rotation (rpm) | 4-10 | 4-10 | 4-10 | 4-10 |
| Sand Initial Moisture (%) | 8-10 | 8-10 | 8-10 | 8-10 |
| Sand Final moisture (%) | 0.5-1 | 0.5-1 | 0.5-1 | 0.5-1 |
| Inlet Air Temperature (℃) | 700-750℃ | 700-750℃ | 700-750℃ | 700-750℃ |
| Capacity (TPH) | 13-17 | 21-28 | 45-47.5 | 65-70 |
| Motor Model | Y2-132m-4E | Y2-132m-4E | Y2-160m-4E | Y2-160m-4E |
| Motor Power kW | 5.5×2 | 5.5×4 | 7.5×4 | 11×4 |
| Reducer Model | XWD-5-5.5kW-5 | XWD-5-5.5kW-5 | XWD-7.5kW-8 | XWD-11kW-8 |
| Reducer Ratio 1 | 29 | 29 | 29 | 29 |
Notice:
1. Any change of technical data shall not be advised additionally.
2. Parameters above are for reference; final configuration is tailored to your material and capacity.
Show of Sand Rotary Dryer
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Why Dongding
Learn More About Dongding® Service
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- 600+
- Projects Worldwide
With drying projects running across the globe, Dongding has earned long-term trust through reliable quality and responsive after-sales service.
Frequently Asked Questions
Common questions about our rotary dryers — pricing, customization, installation and after-sales.
A:
Please share your raw material, initial and target moisture content, required capacity (t/h), available fuel or heat source, and your target market. With these details our engineers can recommend the right model and send an accurate quotation.
A:
As a manufacturer, we accept orders starting from a single machine. We can also deliver complete drying production lines with auxiliary equipment such as hot air furnaces and dust collectors. Contact us for tailored pricing.
A:
Standard models are usually delivered within 25-40 days after the deposit. Customized machines or larger production lines may take longer depending on the configuration. The exact schedule is confirmed in your contract.
A:
Yes. Every dryer is engineered around your material, capacity, moisture and site layout. Heat source, material of construction, dust collection and automation level can all be customized to your process.
A:
Yes. We provide installation guidance, commissioning, operator training and lifetime after-sales support. Our engineers can also travel to your site, and all equipment comes with a warranty.
