Rotary Drum Dryer
High-capacity drying of biomass and mineral materials
Rotary Drum Dryer Overview
Our rotary drum dryer is a professional industrial drying machine designed for continuous moisture removal from bulk materials. It efficiently dries biomass materials, minerals, agricultural waste, and industrial byproducts—with a moisture reduction rate from 30–60% to 5–15% (adjustable). Widely used in biomass energy plants, mineral processing factories, and waste recycling centers, this equipment balances high drying efficiency, energy savings, and stable operation—becoming a core drying solution for industrial production.
Technical Parameters of Drum Dryer
| Modle | Motor(kw) | Diameter(mm) | Length(mm) | Speed (r/min) | Capacity(t/h) |
|---|---|---|---|---|---|
| HXRD-800 | 5.5 | 800 | 8000 | 6 | 1-2 |
| HXRD1000 | 7.5 | 1000 | 10000 | 5 | 2-4 |
| HXRD1200 | 7.5 | 1200 | 12000 | 4.5 | 4-6 |
| HXRD1500 | 11 | 1500 | 15000 | 4.5 | 6-8 |
| HXRD1600 | 15 | 1600 | 16000 | 4.5 | 7-9 |
| HXRD1800 | 22 | 1800 | 18000 | 4.5 | 9-11 |
| HXRD2000 | 37 | 2000 | 20000 | 4.3 | 11-13 |
| HXRD-2200 | 37 | 2200 | 22000 | 4 | 13-15 |
| HXRD2400 | 45 | 2400 | 24000 | 4 | 15-18 |
Note. The data in the table is for reference only. Please consult our company for details
Core Components of Rotary Drum Dryer Machine
Rotary Drum
Made of Q345R low-alloy steel and features a smooth interior (polished to prevent material sticking).
Heat Exchange System
The system includes a high-capacity heater and a centrifugal fan to circulate hot air within the drum.
Gear Transmission
The system uses a cast iron gearbox + hardened steel gears – transmitting power to the drum without lag.
Dust Collection
Captures 95% of dust and emits clean air (dust ≤ 30mg/m³, in line with China GB 13271-2014 standard).
Which Materials can be Processed?
Rotary Drum Dryer Working Principle
The drying process follows a simplified three-step logic, relying on efficient heat exchange to remove moisture:
- Material Feeding: Wet material is continuously fed into the rotating drum through a sealed feeder to prevent heat loss.
- Heating and Material Mixing: As the drum rotates, the material is lifted and dispersed by internal lifting plates, ensuring full contact with hot air (120–350°C) for rapid moisture evaporation.
- Drying and Discharge: Moisture is discharged with the exhaust gas, and the dried material (moisture content 5–15%) is automatically discharged, completing the continuous drying process.
Core Advantages and Features
We focus on what users care about: saving time, cutting costs, ensuring quality, and meeting environmental standards.
Large heat exchange area and optimized airflow design enable 90%+ moisture removal rate, meeting industrial production timelines.
Handles biomass, minerals, and agricultural waste—from fine powder (mineral powder) to bulk materials (rice husk), no strict particle size limits.
Heavy-duty drum structure and high-quality bearings support 24/7 continuous operation, with annual maintenance costs <3% of the machine price.
Heavy-duty drum structure and high-quality bearings support 24/7 continuous operation, with annual maintenance costs <3% of the machine price.
Equipped with dust removal and desulfurization devices, exhaust gas meets global environmental standards—no pollution to air or soil.
Main Application Scenarios
1. Biomass Energy Production
Dries sawdust, rice husk, and coconut shell for subsequent briquetting or pelletizing—core equipment for biomass energy plants.
Mineral Processing
Reduces moisture of coal slime, iron ore powder, and limestone to meet transportation and processing requirements.
3. Agricultural Waste Utilization
Dries crop residues and grain byproducts, converting them into feed or biomass fuel.
4. Building Materials Production
Dries sand, gravel, and cement additives to ensure product quality in construction projects.
Hot Market Rotary Drum Dryer for Sale
- Southeast Asia (Indonesia, Vietnam): High demand for biomass drying to support local biomass energy development.
- Africa (Nigeria, Kenya): Popular for coal slime and agricultural waste drying, fitting small-to-medium industrial production needs.
- Europe (Germany, Poland): Favored for energy-saving and eco-friendly design, aligning with regional carbon reduction policies.
Customer Application Cases
Indonesian Palm Oil Mill
An Indonesian facility operates a 15-ton/day Biomass Rotary Dryer to dry palm kernel shells from 35% to 10% moisture. The dried shells now fuel the mill’s boilers, cutting natural gas use by 45% and annual energy costs by ~$180,000.
Romanian Mineral Plant
A Romanian site uses a 30-ton/day Coal Rotary Dryer for limestone powder processing. Equipped with advanced heat recovery and emission control, it meets strict EU standards while reducing energy consumption by 25%.
Indian Agricultural Company
An Indian firm relies on a 5-ton/day Waste-to-Energy Rotary Dryer to lower corn cob and sawdust moisture from 50% to 15%. The dried material is pressed into affordable cooking briquettes, reducing local deforestation.
Frequently Asked Questions for Rotary Drum Dryer
It has a wide range of applications and can dry wet materials in granular, powdered, and lumpy forms, such as slag, coal slime, sand, organic fertilizer, grain, and feed.
The processing capacity ranges widely, from a few tons to hundreds of tons per hour. The specific processing capacity is customized based on the material characteristics, the moisture content of the input and output materials, and the customer’s production capacity requirements.
Yes—we typically stabilize moisture below 12%, but for Rotary Dryer for Pellet Production or charcoal needs, it can be reduced to <5% by tuning wind speed, temperature, and drum speed.
Heat sources are flexible (biomass, gas, oil, coal, steam, hot air furnace). Our High Thermal Efficiency Rotary Dryer minimizes energy use—costs depend on heat source, material moisture, and capacity.
The standard cyclone dust collector captures most dust. For higher environmental standards, a bag filter or water curtain dust collector can be added to meet environmental requirements.
The lifting plate is a core component that continuously lifts and drops the material, increasing the contact area between the material and the hot air flow, ensuring uniform and efficient drying.
The warranty period for core components is typically one year, and for the entire machine is six months (details subject to contract). Wearing parts (such as seals and bearings) are easily replaced, and our manufacturer provides lifetime technical support.
No. The equipment is equipped with temperature and humidity sensors that monitor and provide feedback to adjust the heat source and speed, precisely controlling the final moisture content and avoiding over-drying.
How to Buy the Best Rotary Drum Dryer?
Define material form (granular/powder/lump), initial moisture, and viscosity. For sticky materials (e.g., coal slime), choose a Coal Rotary Dryer with anti-stick scrapers; for heat-sensitive biomass, opt for a Biomass Rotary Dryer with temp control ≤120°C.
Backward-calculate the dryer’s processing capacity based on the capacity of subsequent processes, allowing for 15%-20% redundancy. Determine the drum diameter and length based on plant space (for example, a 5 ton/hour production capacity requires a 1.8 m x 12 m diameter). Ask the manufacturer for installation plans.
Select a heat source (gas/biomass/waste heat) based on local energy costs. Ensure your High Thermal Efficiency Rotary Dryer has an automatic control system (thermocouple + frequency converter) to keep hot air temp fluctuations ≤±5°C.
For caking-prone materials (e.g., wet straw), choose a Rotary Drum Dryer for Biomass Pellet Production with a pre-disintegration device and end-of-drum anti-clog screen—avoiding downtime from blockages.
Preferably select manufacturers with at least three references in the same industry. Review customer operational data (energy consumption, moisture content stability), and confirm that the manufacturer can provide customized solutions, not just standard equipment.
The contract stipulates a warranty of ≥1 year for core components (drum, motor), and a lead time of ≤72 hours for consumable parts. Acceptance criteria (such as final moisture content deviation and throughput compliance rate) should be agreed upon to avoid future disputes.
Get Your Custom Rotary Drum Dryer Solution
With 12 years of experience manufacturing rotary drum dryer, we understand industrial drying needs for efficiency, cost savings, and environmental compliance. Whether you need a small model for rural workshops or a large unit for industrial production, we’ll tailor it to your material type, moisture requirements, and production scale.
Contact us today to get:
- Free material analysis & capacity calculation (share your raw material and moisture target).
- Custom videos of our dryer processing your specific material (e.g., sawdust, coal slime).
- A transparent quote (no hidden fees—includes machine, heat source, installation, and training).
We don’t just sell drying machine—we provide turnkey drying solutions that help you reduce costs, improve product quality, and unlock industrial production potential. Let’s start your efficient drying journey!