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Lignite Dryer for Coal Industry

Lignite Dryer

Applied Materials: coal slime, raw coal, any kinds of fine coal, iron powder, copper powder, zinc powder and any other metal granular materials, clay, limestone, sand, silica/quartz sand, bentonite, slag, and other non-thermal sensitive powder and particle.

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What is Lignite Coal Dryer?

Lignite is a kind of mineral coal with minimum coalification degree. Because it is rich in volatile elements, it is easy to be burnt and generate smoke. It is mainly used in power plant, chemical industry, metal recycling as well as catalyst supports, adsorbents, sewage purification etc. Due to the washing process to improve the purity of lignite, drying machine is requisite. Thus, lignite dryer was born.

To meet environmental legislation and customers' need, FTM is keeping researching and has developed advanced lignite drying technology. Lignite dryer is also called brown coal dryer and wood coal drying machine, which can realize continuous, industrial and automatic operation. It can also be used for drying fly ash, coke, coal as well as other granular, paste and powder materials. Lignite coal dryer machine guarantees that the quality of coal slime and lignite unchanged after the drying process, which can dewater the coal slime to the moisture content below 13%, and improve the combustion efficiency.

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Fote Lignite Dryer

Applications of Lignite Rotary Dryer

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Liginite Dryer Application

How Lignite Dryer Works?

Lignite Dryer adopts the new technology of drying after crushing, which realizes the industrialization, automation and continuous production.  When the lignite dryer machine works, wet lignite is fed into the crushing equipment firstly. Then low-temperature four-stage drying process is introduced and dries the wet lignite to the humidity of 13% or below. 

Lignite Dryer Working Principle.gif

Working Principle of Lignite Dryer

Structural Functions of the Four Drying Stages of Lignite Dryer

First Level: 400 ℃, high temperature removes most of the moisture and make sure the lignite not change chemically;

Second Level: 300 ℃, strong wind produced works in high efficiency to ensure that the lignite is not coking;

Third Level: 120-210℃, with the crushing function of the cleaning devices inside the cylinder, wet lignite flows in the cylinder and is dried;

Fourth Level: 60-80℃, the removal of water depends on low-temperature current produced by the induced draft system.

Advantages of Fote Lignite Drying Machine

Therefore, lignite dryer can take full advantage of the coal resources and reduce the emission concentration, so as to achieve energy-saving emission reduction and environmental protection objectives.

Typical Case of Coal Drum Dryer

As for the wide application and structural advantages, Fote lignite dryer is popular with many countries. So far, Fote lignite dryers have been exported to over 200 countries like Indonesia, Brazil, Turkey, Canada, Russia, etc. Here introduces a case for your reference. In 2017, a lignite plant owner left an online message when he searched coal dryer and found our web. Fote engineer supplied him a solution within his budget according to the details he left. After two-week delivery and Fote engineers' on-site guidance, this lignite dryer has worked well since the installation.

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Lignite Dryers at Customer Sites

Lignite Dryer Manufacturer

Fote Machinery, as one of the most professional mining machine suppliers in China, has established its own production series for its 40-year research and development. Since 1982, Fote has built a good and reliable relationship with diverse famous universities like Zhejiang University, Tsinghua University, etc. More than 360 professional engineers are ready to offer you free and customized solutions 7X24 hours. You can chat online with them or leave an online message for more details like lignite dryer price, solutions as well as the flow chart.

General Specification

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)
Φ1.5×15m15005001520.273-5%Lifting form85016.2×2.7×2.7
Φ1.5×17m1722.9718.2×2.7×2.7
Φ1.5×19m1925.6820.0×2.9×2.9
Φ1.8×21m18006502135.913-5%Lifting form85022.5×2.7×2.7
Φ1.8×23m2339.3324.5×2.9×2.9
Φ1.8×25m2542.7526.5×2.9×2.9
Φ2.2×21m22008002158.103-5%Lifting form850----
Φ2.2×23m2363.61
Φ2.2×25m2569.15
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)
Φ1.5×15m150050020.27
Φ1.5×17m22.97
Φ1.5×19m25.68
Φ1.8×21m180065035.91
Φ1.8×23m39.33
Φ1.8×25m42.75
Φ2.2×21m220080058.10
Φ2.2×23m63.61
Φ2.2×25m69.15

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Capacity: 25-30TPH

Outer Cylinder Diameter: 2.5-3.6m

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