Rotary kiln dryer
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- Customization Service：The maximum customizable diameter is 3.5 meters
- Solution：Provide solutions for your problems
- Dryer length: 8 meters to 36 meters.
Rotary kiln dryer
A rotary kiln dryer, also known as a drum dryer, is a type of dryer used by industrial companies to dry large quantities of materials. The main body of a rotary kiln dryer consists of a large, slightly tilted, slowly rotating steel drum (available in carbon steel or stainless steel). Material enters the dryer from the upper end and moves toward the lower end due to the drum’s continuous rotation and gravity. During this process, it comes into contact with the hot air, resulting in uniform drying.
Rotary kiln dryers are widely used in industries such as chemical, metallurgy, building materials, environmental protection, feed, and fertilizer. They are particularly suitable for drying granular, powdered, flaky, and bulk materials such as slag, clay, sand, sawdust, and distiller’s grains, achieving excellent drying results.
The working principle of a rotary kiln dryer is that as the drum rotates, material enters the drum, where hot air dries the material, achieving the desired drying effect.
Feed and Drive: A feeder continuously and evenly feeds the wet material into the upper end of the rotary kiln drum. The dryer cylinder is driven by a transmission, gradually descending from high to low.
Lifting and Dispersion: Lifting plates are installed on the inner wall of the cylinder. As the cylinder rotates, the plates continuously lift and disperse the material, forming a uniform curtain across the cross-section of the cylinder. This significantly increases the contact area between the material and the hot air, improving thermal efficiency. The number and angle of the lift plates can be adjusted according to the material being dried.
Hot Air Contact and Drying: Hot air from the hot air furnace enters the dryer through a duct, where it contacts the wet material in a countercurrent flow, continuously drying it.
Discharge and Exhaust: The dried material moves to the lower end of the cylinder and is discharged through a discharge device. Exhaust gases containing water vapor are purified and discharged through a dust removal system at the kiln head.
The entire process is automated, improving production efficiency.
Specifications of Rotary Kiln Dryer
| Model (Diameter × Length, m) | Speed (r/min) | Slope (%) | Capacity (t/h) | Main Reducer Model | Ratio | Main Motor Model | Power (kW) | Speed (r/min) | No. of Supports | Weight (t) | Remarks |
|---|---|---|---|---|---|---|---|---|---|---|---|
| φ1.9/1.6×36 | 0.53–1.59 | 4 | 2.5–4 | JZQ750-1 | 45.58 | JZT-72-4 | 30 | 1200/400 | 3 | 53 | – |
| φ2.1/1.8×36 | 0.5–1.51 | 4 | 3.9–5 | UT2-110 | 163.36 | JZS-81 | 30 | 1410/470 | 3 | 75 | – |
| φ1.2×25 | 0.5–1.6 | 3 | 0.3–1.2 | PM650 | 40.17 | JZTY71-4 | 15 | 1200/120 | 3 | 34 | – |
| φ1.6×32 | 0.158–0.258 | 3 | 0.6–2 | PM750 | 48.57 | JZJY61-4 | 22 | 1200/120 | 3 | 46.82 | – |
| φ1.8×45 | 0.66–1.98 | 4 | 1–4.5 | UT2-110 | 163.36 | JZS-81 | 30 | 1410/470 | 3 | 80 | – |
| φ2.2×50 | 0.125–1.25 | 3.5 | 2–8 | ZS145-11 | 157 | YCT280-4A | 45 | 1320/132 | 3 | 130.71 | – |
| φ2.5×50 | 0.516–1.549 | 3.5 | 5.5–13 | ZS165-7 | 99.96 | YCT355-4A | 55 | 1320/440 | 3 | 167.5 | – |
| φ3×48 | 0.3309–3.309 | 3.5 | 9–20 | ZL130-14 | 32.11 | ZSN4-250-21B | 90 | 1500/150 | 3 | 237 | External decomposition |
| φ3.2×50 | 0.398–3.975 | 3.5 | 13–32 | ZL130-16 | 40.85 | ZSN4-280-11B | 190 | 1000/100 | 3 | 263 | External decomposition |
| φ3.3×52 | 0.391–3.91 | 3.5 | 14–38 | ZSY500-28 | 27.707 | ZSN4-315082 | 190 | 1000/100 | 3 | 280.8 | External decomposition |
| φ4×60 | 0.396–3.96 | 3.5 | 32–80 | ZSY630-35.5 | 34.601 | ZSN-355-092 | 315 | 1000/100 | 3 | 487.5 | External decomposition |
| φ4.2×60 | 0.4165–4.165 | 3.5 | 45–100 | ZSY710-35.5 | 35.526 | ZSN4-355-12 | 420 | 1000/100 | 3 | 576.1 | External decomposition |
| φ4.3×62 | 0.398–3.98 | 3.5 | 51–120 | ZSY710-35.5 | 35.714 | ZSN4-355-12 | 420 | 1000/100 | 3 | 598.5 | External decomposition |
| φ4.8×74 | 0.35–4 | 4 | 90–200 | JH710C-SW305-40 | 42.226 | ZSN-400-092 | – | – | – |
Features and Core Advantages of Rotary Kiln Dryers
Rotary kiln dryers offer significant advantages and significant advantages in industrial applications.
They can operate 24 hours a day, making them suitable for large-scale industrial production and offering output far exceeding that of batch drying equipment. It can dry a variety of materials, especially powders and granules.
The rotary kiln dryer features a sturdy structure, low failure rate, and high automation, allowing for easy centralized control and long-term stable operation.
The material is continuously rotated within the drum, ensuring uniform heating of every part, avoiding uneven drying or overdrying, and ensuring consistent finished product quality.
The drying process fully utilizes heat, resulting in low exhaust gas temperatures and high thermal efficiency, effectively reducing operating costs.
Drying processes such as calcination and cooling can be integrated simultaneously, making this machine a multi-purpose machine.
Environmentally friendly: It can be easily connected to exhaust gas treatment systems (such as bag filters and cyclones).
How customers use the rotary kiln dryer
The rotary kiln dryer features an automated design, allowing for single-machine operation.
- A detailed user manual and video guide are available for initial use. Training will also be provided to customers’ employees.
- Customers simply set parameters via the PLC to control drying temperature, drum speed, dust removal system, and discharge system. Moisture content changes and the drying quality of the finished product can be monitored at any time.
Why choose us as your rotary kiln dryer supplier?
We have years of design and manufacturing experience, and our team of engineers can tailor an optimized solution based on your specific material characteristics (initial moisture, final moisture, specific gravity, etc.) and production requirements.
From steel selection to welding, we strictly adhere to ISO quality management systems to ensure each unit is durable and operates smoothly.
We provide comprehensive services, from installation and commissioning to operator training and regular inspections. Our 24-hour response system ensures worry-free production.