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 Lignite Dryer
To solve the above problems of lignite properties, our company developed of a new lignite drying system. The lignite dryer adopts a new technology of crushing the lignite and then drying it by rotary dryer. That Makes the drying process realized continuous, industrialized and automated. The diameter of the drying drum of our company ranges from Φ1.9 meters to Φ3.4 meters, and the length ranges from 24 meters to 40 meters. And the processing capacity of lignite dryer is 300~2500T/D, the moisture content can be reduced from 40±5% to 10±2%; low calorific value of lignite can be increased by 1000-1800Kcal.
Advantages of Lignite Dryer
01
Well-adapted & Eco-saving
Customized for lignite drying. The dedicated hot-source burner reuses fine coal powder from drying as fuel, cutting costs and secondary dust pollution.
02
Anti-reabsorption & Long-distance Transport
Dried lignite changes physical & chemical properties from hydrophilic to hydrophobic, no moisture re-absorption, suitable for long-haul shipment.
03
High Efficiency & Low Fuel Cost
Coal burnout rate up to 99%. Collected coal fines are reused for heating, reducing fine coal content and fuel expenses.
04
High Safety Performance
Unique sealed feeding & discharging structure. Oxidation-free negative-pressure operation eliminates lignite spontaneous combustion and explosion hazards.
05
Clean Working Condition
Fully sealed negative-pressure system, no dust leakage for a tidy working site.
06
Low Investment & Fast ROI
Low equipment investment and operating cost with quick return on investment.
Working Principle of Lignite Dryer
Firstly, the lignite is crushed by the crushing machine, transported to the screw conveyor by the belt conveyor, then go into the rotary drum, after drying, most of the dry material will be discharged through the belt conveyor, the left material will go into the cyclone dust collector, where the dust will be collected, with the function of induced draft fan, the left material will discharged through the conveyor.
Specifications of Lignite Dryer
| Specification | Capacity(T/D/24 Hours) | Initial Moisture(%) | Final Moisture(%) | Total Power(kw) | Floor Area(m2) |
| DDMG1924 | 300±10 | 40±5 | 20±2 | 128 | 8m*35m |
| DDMG2226 | 500±10 | 40±5 | 20±2 | 165 | 8m*40m |
| DDMG2528 | 700±12 | 40±5 | 20±2 | 213 | 8m*40m |
| DDMG2832 | 1000±15 | 40±5 | 20±2 | 310 | 8m*45m |
| DDMG3136 | 1500±20 | 40±5 | 20±2 | 446 | 10m*50m |
| DDMG3440 | 2000±30 | 40±5 | 20±2 | 658 | 12m*60m |
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 Lignite Dryer
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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.
