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 Sawdust Rotary Dryer
Sawdust rotary dryer is widely used to reduce the moisture content of raw materials in the biomass industry. It can dry wet sawdust from a moisture content of 40–50% to 12%, thereby improving the thermal value of the sawdust.
There is a high-speed rotating crushing device inside the dryer, which increases the contact area between sawdust and hot air. The specially designed lifting plate and guiding plate inside the dryer prevent the raw material from sticking to the sheet and wall of the dryer. The sawdust dryer has good insulation and sealing performance, and high thermal efficiency. We can provide complete triple pass sawdust rotary dryer plant, which includes heating part, feeding machine, rotary dryer, discharging machine, and cyclone dust collector. We can also offer the full Drying and Pelleting Plant in order to make a one-stop solution for our customers.
Advantages of Sawdust Rotary Dryer
01
Compact Footprint
The three-pass drum shortens the machine length by 50%, reducing the building area and saving about 40% of project investment.
02
Custom Heat Sources
Customers can choose the heating source that fits their needs, and we can design customized solutions.
03
Uniform Drying
Multiple spreads and long residence times ensure uniform moisture content throughout the wood chips.
04
Intelligent & Automated
Integrated PLC control and real-time video monitoring ensure a high level of automation and continuous production.
05
Precision Sealing
A unique, precision-engineered sealing structure effectively eliminates heat leakage.
06
Precise Moisture Control
Material flow speed is controlled by frequency conversion, so the final moisture is easily controlled to meet your needs.
Working Principle of Sawdust Rotary Dryer
The Three-Pass Wood Chip Rotary Drum Dryer utilizes a triple-layer concentric drum configuration. By integrating both counter-current and co-current drying technologies, the system achieves exceptionally uniform moisture removal while maximizing overall thermal efficiency.
Three-Pass Drying
First Pass (outer drum, counter-current): The wood chip makes direct contact with high-temperature air, evaporating water rapidly.
Second Pass (middle channel, counter-current): Semi-dry chips continue through a reverse flow, ensuring consistent, deep-layer dehydration.
Third Pass (inner channel, co-current): As the chips reach near-dry status, they travel alongside lower-temperature exhaust gases. This co-current phase allows for gentle final drying, preventing product degradation or over-drying
Specifications of Sawdust Rotary Dryer
| Device Specification | DDJG1210 | DDJG1410 | DDJG1610 | DDJG2010/3 | DDJG2210/3 | DDJG2510/3 | DDJG2512/3 | DDJG2912/3 |
| Daily Processing Capacity(t/d) | 33.6 | 40.8 | 58.9 | 131.4 | 145.0 | 167.7 | 204.0 | 247.0 |
| Daily Output(t/d) | 15.6 | 19.2 | 27.7 | 61.8 | 68.2 | 78.9 | 96.0 | 116.2 |
| Water Evaporation Capacity (t/h) | 0.75 | 0.90 | 1.30 | 2.90 | 3.20 | 3.70 | 4.50 | 5.45 |
| Raw Material Water Content(%) | 60-80 | 60-80 | 60-80 | 60-80 | 60-80 | 60-80 | 60-80 | 60-80 |
| Dried Material Water Content(%) | 12-15（adjustable） | 12-15（adjustable） | 12-15（adjustable） | 12-15（adjustable） | 12-15（adjustable） | 12-15（adjustable） | 12-15（adjustable） | 12-15（adjustable） |
| Drying Temperature(℃) | 350-550 | 350-550 | 350-550 | 350-550 | 350-550 | 350-550 | 350-550 | 350-550 |
| Total Weight(kg) | 32 | 40 | 55 | 95 | 100 | 125 | 145 | 165 |
| Plant Area(㎡) | 15000 | 17000 | 21500 | 26500 | 28500 | 370000 | 41000 | 45500 |
| Device Specification(m) | 5*14 | 5*14 | 6*16 | 8*16 | 8*16 | 10*16 | 10*18 | 10*20 |
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.
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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.
