Drum Dryer

What is Drum Dryer?

Drum dryer is a kind of machinery to deal with the drying of a large number of powdery, muddy, or lumpy materials, it is the most commonly used drying equipment in cement plants, used to dry limestone, clay, coal powder and mixing materials, which is widely used in metallurgy, mining, electric power, chemical industry and other departments.
Drum dryer is mainly used to dry materials, at present there are many kinds of dryers, the heat source of the dryer comes from the combustion device, and its heating method is downstream heating in the process of operation.

If you are a beginner and do not know about Drum Dryer, tell us your raw material characteristics, finished product requirements, site conditions, production budget, hourly production, and other requirements, we have professional engineers to equip you with a suitable model at a reasonable price. Next, let’s see the types of Drum Dryer we can supply.

What Is Drum Dryer Used For?

Drum dryer or single drum dryer has strong adaptability to materials, used to dry limestone, clay, coal powder and mixed materials, widely used in metallurgy, mining, electric power, chemical industry and other departments. As the key equipment, the drum dryer has the advantages of simple and reliable operation, good dustproof performance, good sealing effect and convenient maintenance. In addition, the equipment can be set up as an independent unit or as a complete system including dust collector, feeder, conveyor and other necessary machines.

Drum Dryer ordered by Customer

Chunlei Machinery has been engaged in mining machinery manufacturing for more than 30 years, with a wealth of experience in building websites and customer cases, served customers all over the world!

Technical Parameters of Drum Dryer

Specification (diameter * length)	Simplified volume	Production capacity (t/h)	Installation Angle (%)	Maximum intake air temperature	Main motor	Total weight (t)
Ø 1.2×8	9	1.9-2.4	3-5	700-800	7.5	9
Ø1.2 ×10	11.3	2.4-3	3-5	700-800	7.5	11
Ø 1.5×12	21.2	4.5-5.7	3-5	700-800	15	18.5
Ø 1.5×14	24.7	5.3-6.6	3-5	700-800	15	19.7
Ø1.5×15	26.5	5.7-7.1	3-5	700-800	15	20.5
Ø 1.8×12	30.5	6.5-8.1	3-5	700-800	18.5	21.5
Ø 1.8×14	35.6	7.6-9.5	3-5	700-800	18.5	23
Ø 2.2×12	45.6	9.7-12.2	3-5	700-800	22	33.5
Ø 2.2×14	53.2	11.4-14.2	3-5	700-800	22	36
Ø 2.2×16	60.8	13-16.2	3-5	700-800	22	38
Ø 2.4×14	63.3	13.5-16.9	3-5	700-800	37	45
Ø 2.4×18	81.4	17.4-21.7	3-5	700-800	37	49
Ø 2.4×20	90.4	19.3-24.1	3-5	700-800	45	54
Ø 2.4×22	99.5	21.2-26.5	3-5	700-800	45	58
Ø 2.6×24	127.4	27.2-34	3-5	700-800	55	73
Ø 3×20	141.3	30.1-37.7	3-5	700-800	75	85
Ø 3×25	176.6	37.7-47.1	3-5	700-800	75	95
Ø 3.2×25	201	42.9-53.6	3-5	700-800	90	110
Ø 3.6×28	285	60.8-76	3-5	700-800	160	135

Working Principle of Drum Dryer

Wet material is added from the upper part of one end of the dryer, with the slow rotation of the cylinder, the material is constantly copied up and sprinkled down in the process of cylinder rotating, at the same time, the heat carrier (such as hot air, high temperature flue gas or water vapor, etc.) enters into the cylinder from the other end of the dryer, and the material is contacted with the countercurrent or concurrent flow. In this process, the material and the heat carrier for full heat exchange, the moisture in the wet material is gradually evaporated, the dried product from the other end of the lower part of the collection.

Advantageous features of Drum Dryer

• Good drying effect: the material is constantly copied and sprinkled in the cylinder body, and fully contact with the heat carrier, which makes the drying uniformity good and can guarantee the drying quality of the product.
• Wide range of application: It has strong adaptability to materials and can be used to dry materials of different properties, such as powder, granule, block, mud, etc.
• Large production capacity: large handling capacity and high thermal efficiency. When drying non-combined water, the thermal efficiency of up to 60%.
• Strong adjustability: it can adapt to the drying requirements of different materials by adjusting the rotational speed of the cylinder, the inclination, the temperature of the heat carrier and the flow rate and other parameters.
• Long service life: the dryer adopts “centering type pallet device”, so that the pallet and the roller ring are always in linear contact, thus greatly reducing the wear and power loss.

Drum Dryer FAQ

Q: What is the maximum moisture content a drum dryer can handle?
A: A drum dryer can effectively handle materials with initial moisture content as high as 80-85%, such as distillers grains, fruit pomace, or slurry. It can dry these down to 10-15% moisture in a single pass, depending on the material properties and drum temperature.

Q: How much energy can a triple-pass drum dryer save compared to a single-pass design?
A: A triple-pass drum dryer typically saves 30-40% on fuel compared to a single-pass rotary dryer of the same capacity. The three concentric drums recirculate heat multiple times, reducing heat loss and increasing thermal efficiency to 80-85%.

Q: What materials can be processed in a drum dryer?
A: Drum dryers are extremely versatile. Common applications include drying sand, limestone, clay, coal powder, animal manure, brewer’s spent grains, wood chips, sawdust, and chemical powders. Almost any granular or fibrous non-sticky material can be processed.

Q: How do I choose the right size drum dryer for my production line?
A: You need to provide three key parameters: initial moisture content, target final moisture, and required throughput (tons per hour). We also need to know the material type and maximum particle size. With this information, our engineers can calculate the exact drum diameter and length needed.

Q: What is the typical lifespan of a drum dryer’s lifting flights?
A: With proper material selection (wear-resistant steel for abrasive materials like sand, or stainless steel for corrosive materials), lifting flights typically last 3-5 years. For mild materials like biomass, they can last 6-8 years. We recommend quarterly inspections for early wear detection.

Q: Can a drum dryer run continuously 24 hours a day?
A: Yes, industrial drum dryers are designed for continuous 24/7 operation. The key is proper maintenance of the riding rings, trunnion rollers, and seals. Most of our customers run their drum dryers 330 days per year, stopping only for scheduled annual maintenance.

Q: What is the installation lead time for a complete drum drying system?
A: From order confirmation, manufacturing typically takes 45-60 days for a standard model. Installation on your site takes about 15-20 working days, depending on site conditions and local labor availability. We send two engineers to supervise the entire process.

Q: Do you offer spare parts for drum dryers after warranty?
A: Yes, we keep a complete inventory of spare parts including riding rings, trunnion rollers, pinions, gear reducers, and lifting flights for all models we have sold in the last 10 years. We can ship common parts within 48 hours internationally.