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Coal Mill

Coal Mill
Feeding size:
≤25mm
Processing capacity:
0.65-615t/h
Applicable materials:
Widely used in the grinding operations of coal slag and slime in coal preparation plants, etc.
Product Description

The coal grinding ball mill is a typical grinding equipment. The equipment is developed with advanced technology, so it has more functions, more reliable performance, and has certain advantages in structure, operation, and use. The equipment is due to its production capacity. Very high, so it can be better used by users。

Coal Mill

1. Main parts: the hollow shaft is made of steel castings, the inner lining is removable, the large rotary gear is processed by casting gear hobbing, and the cylinder is inlaid with wear-resistant liners, which has good wear resistance.

2. Main engine: The main engine of the coal mill ball mill includes a cylinder, in which a liner made of wear-resistant materials is inserted in the cylinder, there are bearings that carry the cylinder and maintain its rotation, and there are driving parts such as electric motors, transmission gears, and pulleys. Triangle belt and so on.

3. Blade: The blade is also a small part of the coal grinding ball mill. It is generally not the main part. There is an inner spiral in the part feeding port at the feeding end, which can be called an inner spiral blade.

4. Bearings: The coal mill ball mill adopts self-aligning double-row radial spherical roller bearings, which have low running resistance and significant energy-saving effects.

5. Cylinder body part: A section of conical cylinder body is added at the discharge end of the original cylinder body, which not only increases the effective volume of the mill, but also makes the medium distribution in the cylinder more reasonable. According to the material and the way of discharging, dry mill can be selected. Coal ball mill and wet coal ball mill.

 

Working Principle

Coal Mill

The ball mill is the main equipment on the coal production line of the coal preparation plant, and is used to pulverize and prepare coal. The coal grinding ball mill is mainly composed of a feeding device, a main bearing, a rotating part, a transmission device, a high-pressure starting device, and a lubrication system. The working process of the coal mill ball mill is: the pulverized coal is loaded into the mill from the feed through the feeding equipment, and the hot air enters the mill from the air inlet pipe. With the rotation of the mill cylinder, the coal and the hot air exchange heat in the mill. It is pulverized and ground in the mill. While the coal is being ground, the fine powder is passed through the hot air in the mill and brought out of the coal mill ball mill through the discharging device.

 

Product Advantages

1. The system equipment and technological process are simple, the investment is low, and the workshop area is small;

2. The air duct is a curved air duct, the tangential air inlet is smooth, the resistance is small, and the internal outlet direction is conducive to the dispersion of materials and is not easy to block;

3. In the structure of the mill, an advanced internal powder separation special compartment device is adopted, an activation device is added to the fine grinding chamber, and a special discharge grate is provided at the end of the mill, which greatly reduces the size of the grinding medium in the grinding chamber and greatly improves the grinding. Efficiency, achieve the purpose of high output and low energy consumption;

4. Choose the inner surface of the inner door plate and the inner surface of the air inlet volute to be on the same curved surface, so that the eddy current effect can be effectively prevented;

5. Most of the coal grinding ball mills are used in the circulation grinding system. Its characteristics are high grinding efficiency, large output of the mill, and low power consumption. Especially when grinding coal, its performance is more prominent.

Technical Parameter
Model
Shell rotation speed(r/min)
Ball load(t)
Feeding size(mm)
Discharging size(mm)
Capacity
Motor
power(kw)
Weight(t)
(t/h)
Φ900*1800
36-38
1.5
<=20
0.075-0.89
0.65-2
18.5
4.6
Φ900*3000
36
2.7
<=20
0.075-0.89
1.1-3.5
22
5.6
Φ1200*2400
36
3
<=25
0.075-0.6
1.5-4.8
30
12
Φ1200*3000
36
3.5
<=25
0.074-0.4
1.6-5
37
12.8
Φ1200*4500
32.4
5
<=25
0.074-0.4
1.6-5.8
55
13.8
Φ1500*3000
29.7
7.5
<=25
0.074-0.4
2-5
75
15.6
Φ1500*4500
27
11
<=25
0.074-0.4
3-6
110
21
Φ1500*5700
28
12
<=25
0.074-0.4
3.5-6
130
24.7
Φ1830*3000
25.4
11
<=25
0.074-0.4
4-10
130
28
Φ1830*4500
25.4
15
<=25
0.074-0.4
4.5-12
155
32
Φ1830*6400
24.1
21
<=25
0.074-0.4
6.5-15
210
34
Φ1830*7000
24.1
23
<=25
0.074-0.4
7.5-17
245
36
Φ2100*3000
23.7
15
<=25
0.074-0.4
6.5-36
155
34
Φ2100*4500
23.7
24
<=25
0.074-0.4
8-43
245
42
Φ2100*7000
23.7
26
<=25
0.074-0.4
8-48
280
50
Φ2200*4500
21.5
27
<=25
0.074-0.4
9-45
280
48.5
Φ2200*6500
21.7
35
<=25
0.074-0.4
14-26
380
52.8
Φ2200*7000
21.7
35
<=25
0.074-0.4
15-28
380
54
Φ2200*7500
21.7
35
<=25
0.074-0.4
15-30
380
56
Φ2400*3000
21
23
<=25
0.074-0.4
7-50
245
54
Φ2400*4500
21
30
<=25
0.074-0.4
8.5-60
320
65
Φ2700*4000
20.7
40
<=25
0.074-0.4
12-80
400
94
Φ2700*4500
20.7
48
<=25
0.074-0.4
12-90
430
102
Φ3200*4500
18
65
<=25
0.074-0.4
-----
800
137
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The coal grinding ball mill is a typical grinding equipment. The equipment is developed with advanced technology, so it has more functions, more reliable performance, and has certain advantages in structure, operation, and use. The equipment is due to its production capacity. Very high, so it can be better used by users。 1. Main parts: the hollow shaft is made of steel castings, the inner lining is removable, the large rotary gear is processed by casting gear hobbing, and the cylinder is inlaid...
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