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 Rotary Steam Tube Dryer
The rotary steam tube dryer is a proven continuous industrial dryer featuring an indirect heat exchange design. Unlike conventional hot-air rotary dryers, it uses steam as the heating medium. Heat is transferred indirectly, so materials never come into direct contact with flue gas.
The drying process runs at low temperature within a sealed system, free of pollution. This prevents material contamination and discoloration.
Application
Coal & Lignite: Dry high-moisture coal, lignite, brown coal, coal fines and coal processing residues prior to combustion, gasification or downstream treatment.
Brewer's Spent Grain: Reduce moisture for storage, transport and animal feed application.
Sugar & Beet Pulp: Efficiently dry beet pulp and other sugar industry by-products for animal feed and further processing.
Food & Feed By-products: Gentle indirect drying for food and feed processing by-products.
Biomass: Dry wood chips, agricultural waste, alfalfa and other fibrous biomass materials.
Advantages of Rotary Steam Tube Dryer
01
Indirect Heating
Steam heats the material indirectly through internal heat-transfer tubes, minimizing direct contact with combustion gases.
02
Suitable for High-Moisture Materials
Designed for continuous drying of materials with high initial moisture content.
03
Steam Energy Utilization
Power plants, sugar mills and industrial facilities often have available process steam, low-pressure steam or recoverable waste heat. Our Steam Tube Rotary Dryer can utilize suitable steam sources as an indirect heating medium to remove moisture from high-moisture materials such as lignite, coal, bagasse and biomass.
04
Controlled Drying
Adjustable drying conditions help achieve the required final moisture for downstream processing.
05
Continuous Operation
Designed for stable, continuous industrial production with high throughput.
06
Customized Engineering
Dryer size, tube configuration, steam pressure and process parameters can be engineered according to your material and capacity.
Working Principle of Rotary Steam Tube Dryer
Steam enters the heat-transfer tubes installed inside the rotating drum. As the drum rotates, the wet material continuously contacts the heated tube surfaces. Heat is transferred indirectly from steam to the material, causing moisture to evaporate.
Specifications of Rotary Steam Tube Dryer
| Model | Capacity(T/24Hours) | Initial Moisture (%) | Output Moisture(%) | Total Power(KW) | Floor Area(㎡) |
| DDZG1918 | 300 | <30 | 13±2 | 130 | 42*16 |
| DDZG2220 | 500 | <30 | 13±2 | 150 | 46*16 |
| DDZG2520 | 800 | <30 | 13±2 | 200 | 48*16 |
| DDZG2824 | 1000 | <30 | 13±2 | 250 | 51*16 |
| DDZG3026 | 1300 | <30 | 13±2 | 280 | 52*18 |
| DDZG3228 | 1500 | <30 | 13±2 | 330 | 55*18 |
| DDZG3420 | 1800 | <30 | 13±2 | 380 | 56*18 |
| DDZG3628 | 2000 | <30 | 13±2 | 450 | 58*18 |
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.
