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Rotary Dryer

Rotary Dryer

Applied materials: slag, nickel ore powder, manganese ore powder, gypsum powder, bentonite, blast furnace slag, fly ash, cinder, carbide slag, limestone, clay, sand, quartz sand.

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Model: Φ1.2m×8.0m

Yield: 1.9-2.4 t/h

Power

Power: 7.5 kw

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Model: Φ2.2m×14m

Yield: 11.4-14.2 t/h

Powder

Powder: 22 kw

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Model: Φ3.6m×28m

Yields: 60.8-76.0 t/h

Powder

Powder: 160 kw

  • Small-sized
  • Medium-sized
  • Large-sized
Customizable
online customer service

60s online
customer service

customize solutions

2 days customize
solutions

Factory visiting

Factory
visiting anytime

dispatch the goods

1-10 days dispatch
the goods

installation

One week
of installation

training

2 days of
training

after-sales online

365 days
after-sales online

Project tracking regularly

Project tracking
regularly

provide maintenance plan

2 days provide
maintenance plan

Pre-sale service

Sales service

After-sales service

Tip1: The specific time arrangement depends on the actual situation.    Tip2: Free airport transfer and hotel accommodation.

How to Choose the Right Rotary Dryer for Your Process?

Rotary dryers are highly efficient industrial drying machines for bulk solids. They are often chosen for their large processing capacity, robust construction, and high adaptability to the raw materials.

Therefore, whether you want to dry your fertilizer for effective granulation, dry sand for better quality, or dry limestone for higher grinding efficiency, or control the moisture content of biomass raw materials within a reasonable range for easier briquetting, a rotary dryer is your choice for all.

rotary dryer can process sand, limestone, and fertilizer

And you definitely want to take a good look at Ftmmachinery's rotary dryers. Ftmmachinery industrial rotary dryers have won the favor of many customers with the following advantages.

Features of Ftmmachinery Rotary Dryers

Large Processing Capacity

Rotary dryer: large processing capacity

One of the reasons why rotary dryers are frequently chosen is their high processing capacity. Rotary dryers made by Ftmmachinery can process material between 1.9 and 76 tons per hour. This is essential in environments that require high throughput.

Controllable Drying Process

Automation control system: controllable drying process

It adopts automation control system, and can configure different heating temperatures and heating times according to drying requirements to realize drying automation. The controllable drying process can effectively control the moisture content of the finished product.

Robust Construction

Rotary dryer has a robust construction

Rotary dryers are frequently used to dry minerals, ores, fertilizers, as well as other demanding industrial bulk solids. This requires the dryer to be robust and durable. The drum shell of rotary drying equipment is made by coil welding of 10mm thick 20g boiler steel plate, extending the service life.

High Drying Efficiency

Custom designed lifters or flights

Ftmmachinery provides rotary dryers with various lifters options that work with the characteristics of the materials to create the optimal “curtain,” or cascade of material across the drum's interior diameter, as this promotes maximum heat transfer.

Can I dry my raw material with a rotary dryer?

The rotary dryer has a very wide range of applications and can meet the drying requirements of various industrial materials.

  • Powder particle: Sand, aggregates, limestone, clay, mineral filter cake, coal, iron sulfate, fly ash, gypsum, etc.
  • Damp and sticky material: Coal slime, sewage sludge, bentonite, Kaolin, etc.
  • Corrosive material: Distillers, grains, fertilizers, animal manure, slag, etc.
  • Biomass material: Sawdust, wood chips, etc.

Materials that rotary dryer can process

Should I choose a direct rotary dryer or an indirect rotary dryer?

Direct Rotary Dryers

Direct dryers rely on direct contact between the material and process gas to efficiently dry materials.

Direct rotary dryers are used in many industries, including fertilizer and agriculture, mining and minerals, specialty chemicals, and more, due to their higher efficiency and greater adaptability.

Indirect Rotary Dryers

Conversely, indirect dryers use heat emanating from the drum's shell to dry material via radiation and conduction, avoiding direct contact between the material and drying air.

The indirect rotary dryers are usually preferred for small or medium batches whose products risk contamination or degradation by exposure to the atmosphere or feature toxic and/or hazardous chemicals that should not be released into the environment. Choose an indirect rotary dryer if you are drying highly combustible materials, organics such as grain and pulp, and fine materials such as pigments.

Ftmmachinery manufactures and sells direct rotary dryers and indirect rotary dryers with excellent performance. If you are not sure which rotary dryer you should choose, contact our engineers.

Ftmmachinery rotary dryer engineers

Which heating way should I choose: co-current flow or counter-current flow?

Co-current Air Flow

Rotary dryers are available in two types of air-flow configurations: co-current and counter-current. Co-current air flow means that the moving direction of the material is the same as the flow direction of the heating medium.

It has greater control over solid material temperature and avoidance of overheating. But it is slightly less thermally efficient than the that of the counter-current air flow.

rotary dryer: co-current air flow

Counter-current Air Flow

Counter-current flow heating means that the moving direction of the material is opposite to that of the heating medium.

It is more efficient but it has less control over temperature, and greater potential for overheating.

Which heating way will best suit the process is based on the material's characteristics and the overall process requirement. If you are not sure how to choose, contact our engineers.

rotary dryer: counter-current air flow

Customize the Dryer Design to the Process Requirements

The best-performing rotary dryers have one thing in common: they were designed around the unique requirements of their specified application. This requires our engineers to fully consider a series of factors that may affect the design of the dryer, such as material particle size, inlet and outlet temperature, inlet and outlet moisture, ambient air temperature, humidity and plant elevation.

Why not consult our engineers which dryer should you buy based on your process requirements? Contact our engineers

Ftmmachiney rotary dryer designer

Customer case – Rotary dryer sold in Malaysia

Sawdust is also called wood chips. Being used to make biomass fuel, it can not only realize waste recycling but also reduce environmental pollution effectively. The wet wood chips can be reused after crushing-grinding-drying-granulating-packaging.

According to the survey, every 10,000 tons of wood chips can replace 80,000 tons of standard coal, which can reduce emissions of 160 tons SO2, 80 tons smoke and dust, and 14,400 tons CO2.

Rotary dryer in site in Malaysia

Rotary dryer in site in Malaysia

A customer from Malaysia visited our website in March 2019 to purchase complete equipment for wood chips drying. Fote engineers provided suitable equipment according to the project information provided. They are satisfied with the plan and quotation. After visiting our factory, they decided to buy the whole set.

Here is the project information:

  • Processing material: Sawdust
  • Initial humidity: 8%-10%
  • Final humidity: 1%
  • Production capacity: 15 t/h
  • Maximum temperature: 300 °C
  • Auxiliary equipment: Feeder, feed conveyor, discharge conveyor, induced draft fan, hot blast stove, and cyclone.

Parameter

Spec./m
(Dia.×Length)
Shell Cubage
(m³)
Capacity
(t/h)
Installation
Obliquity
(%)
Highest Inlet
Air Temperature
(℃)
Main Motor
(kw)
Weight
(t)
Φ1.2×8.0
9.0
1.9~2.4
3~5
700~800
7.5
9
Φ1.2×10
11.3
2.4~3.0
3~5
700~800
7.5
11
Φ1.5×12
21.2
4.5~5.7
3~5
700~800
15
18.5
Φ1.5×14
24.7
5.3~6.6
3~5
700~800
15
19.7
Φ1.5×15
26.5
5.7~7.1
3~5
700~800
15
20.5
Φ1.8×12
30.5
6.5~8.1
3~5
700~800
18.5
21.5
Φ1.8×14
35.6
7.6~9.5
3~5
700~800
18.5
23
Φ2.2×12
45.6
9.7~12.2
3~5
700~800
22
33.5
Φ2.2×14
53.2
11.4~14.2
3~5
700~800
22
36
Φ2.2×16
60.8
13.0~16.2
3~5
700~800
22
38
Φ2.4×14
63.3
13.5~16.9
3~5
700~800
37
45
Φ2.4×18
81.4
17.4~21.7
3~5
700~800
37
49
Φ2.4×20
90.4
19.3~24.1
3~5
700~800
45
54
Φ2.4×22
99.5
21.2~26.5
3~5
700~800
45
58
Φ2.6×24
127.4
27.2~34.0
3~5
700~800
55
73
Φ3.0×20
141.3
30.1~37.7
3~5
700~800
75
85
Φ3.0×25
176.6
37.7~47.1
3~5
700~800
75
95
Φ3.2×25
201
42.9~53.6
3~5
700~800
90
110
Φ3.6×28
285
60.8~76.0
3~5
700~800
160
135

Technical parameters of indirect heat dryer:

  Shell 
diameter
×shell 
Length  
Items
Inside 
diameter 
of outer 
shell
(mm)
Inside 
diameter 
of inner 
shell
(mm)
Shell
 Length
(m)
Shell
 cubage
(m³)
Shell 
obliquity
Lifting 
blade
 form
Highest 
inlet air
 temperature
(℃)
Dimensions
(m)
Φ1.5×15m 1500 500 15 20.27 3-5% Lifting form 850 16.2×2.7×2.7
Φ1.5×17m 17 22.97 18.2×2.7×2.7
Φ1.5×19m 19 25.68 20.0×2.9×2.9
Φ1.8×21m 1800 650 21 35.91 3-5% Lifting form 850 22.5×2.7×2.7
Φ1.8×23m 23 39.33 24.5×2.9×2.9
Φ1.8×25m 25 42.75 26.5×2.9×2.9
Φ2.2×21m 2200 800 21 58.10 3-5% Lifting form 850 ----
Φ2.2×23m 23 63.61
Φ2.2×25m 25 69.15
Spec./m
(Dia.×Length)
Shell Cubage
(m³)
Capacity
(t/h)
Φ1.2×8.0
9.0
1.9~2.4
Φ1.2×10
11.3
2.4~3.0
Φ1.5×12
21.2
4.5~5.7
Φ1.5×14
24.7
5.3~6.6
Φ1.5×15
26.5
5.7~7.1
Φ1.8×12
30.5
6.5~8.1
Φ1.8×14
35.6
7.6~9.5
Φ2.2×12
45.6
9.7~12.2
Φ2.2×14
53.2
11.4~14.2
Φ2.2×16
60.8
13.0~16.2
Φ2.4×14
63.3
13.5~16.9
Φ2.4×18
81.4
17.4~21.7
Φ2.4×20
90.4
19.3~24.1
Φ2.4×22
99.5
21.2~26.5
Φ2.6×24
127.4
27.2~34.0
Φ3.0×20
141.3
30.1~37.7
Φ3.0×25
176.6
37.7~47.1
Φ3.2×25
201
42.9~53.6
Φ3.6×28
285
60.8~76.0

Technical parameters of indirect heat dryer:

  Shell 
diameter
×shell 
Length  
Items
Inside 
diameter 
of outer 
shell
(mm)
Inside 
diameter 
of inner 
shell
(mm)
Shell
 cubage
(m³)
Φ1.5×15m 1500 500 20.27
Φ1.5×17m 22.97
Φ1.5×19m 25.68
Φ1.8×21m 1800 650 35.91
Φ1.8×23m 39.33
Φ1.8×25m 42.75
Φ2.2×21m 2200 800 58.10
Φ2.2×23m 63.61
Φ2.2×25m 69.15

NEED HELP?WELCOME TO CONTACT US

As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.

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