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 Raw Coal Dryer
Raw coal features low calorific value, which restricts its safe and economical industrial application. Its quality greatly affects boiler output, efficiency, maintenance cost and operational stability of power plants. Developed for raw coal properties and power plant combustion requirements, our raw coal dryer supports customized drying processes and system layouts. It addresses key challenges including dust pollution, production cost and automatic control. It effectively upgrades coal quality and improves coal storage & transportation performance, forming a virtuous cycle for downstream users.
Advantages of Raw Coal Dryer
01
Strong Overload Resistance & Large Throughput
The dryer boasts excellent overload resistance, with a daily processing capacity of 500 to 10,000 tons.
02
Co-current Drying Process, High Thermal Efficiency
It adopts co-current drying technology. Flue gas and wet materials enter the dryer from the same side, achieving high evaporation intensity, low outlet temperature and high heat utilization rate.
03
Adjustable Operating Parameters, Adequate Heat Exchange
Parameters can be adjusted according to material properties to build a stable full-section material curtain for sufficient heat and mass transfer.
04
Stable Feeding & Discharging, Reduced Dust Removal Load
The advanced feeding and discharging structure eliminates blockage, intermittent feeding and material backflow, lowering the workload of the dust collection system.
05
Anti-sticking Liner, Wide Material Adaptability
Optimized internal structure strengthens sweeping and heat conduction to avoid material adhesion on the drum wall, adapting to raw coal with varied moisture and viscosity.
06
Low Investment & Fast ROI
Low equipment investment and operating cost with quick return on investment.
Working Principle of Raw Coal Dryer
Firstly, the raw coal 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 Raw Coal Dryer
| Model | Capacity(T/24 Hours) | Initial Moisture(%) | Final Moisture(%) | Total Power(kw) | Floor Area(m2) |
| DDYMG2224 | 500 | 17~30 | 11±3 | 128 | 8*40 |
| DDYMG2528 | 700 | 17~30 | 11±3 | 143 | 8*45 |
| DDYMG2830 | 1000 | 17~30 | 11±3 | 260 | 10*50 |
| DDYMG3432 | 1500 | 17~30 | 11±3 | 320 | 12*50 |
| DDYMG4035 | 2000 | 17~30 | 11±3 | 460 | 15*55 |
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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Why Dongding
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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.
