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Batch Ball Mill

Batch Ball Mill
Feeding size:
25mm
Processing capacity:
0.62-180t/h
Applicable materials:
Widely used in cement, silicate products, refractory materials, fertilizers, ferrous and non-ferrous metals
Product Description

The grinding operation of the ball mill is carried out in simplified form. When the cylinder rotates, it is taken up and raised to a certain height. Due to the gravity of the steel ball itself, it finally falls along a certain track. The steel ball in the area is subjected to two forces: one is the force applied to the steel ball from the tangential direction during rotation; the other is the force symmetrical to the diameter of the steel ball but opposite to the above force. The occurrence is caused by the downward sliding of the steel ball due to its own weight. The above two forces will form a pair of force couples for the steel balls. Because the steel balls are squeezed between the cylinder and the adjacent steel balls, the force couple will cause different friction forces between the steel balls. When the ball revolves with the axis of the cylinder, it falls from the top to the bottom in the area, and then it has a strong impact on the ore in the cylinder in the area, breaking the ore. Yes, the ore in the barrel of the ball mill is mainly crushed by the action of the peeling force, impact force and squeezing force.

Batch Ball Mill

Working Principle

Working principle: The intermittent ball mill is a horizontal cylindrical rotating device with outer gear transmission, two warehouses, and a grid-type energy-saving ball mill. The material enters the first bin of the mill uniformly through the feeding device through the feeding hollow shaft spirally. The bin has a step liner or a corrugated liner with steel balls of different specifications. The rotation of the cylinder generates centrifugal force to bring the steel balls to a certain height. After falling, it will have a heavy blow and grinding effect on the material. After the material reaches the rough grinding in the first warehouse, it enters the second warehouse through the single-layer partition board. The warehouse is lined with flat liners and steel balls to further grind the materials. The powder is discharged through the unloading grate plate to complete the grinding operation.

 

Product Advantages

The intermittent ball mill is composed of feeding part, discharging part, rotating part, transmission part (reducer, small transmission gear, motor, electric control) and other main parts. The hollow shaft is made of cast steel, and the inner lining is removable. The large rotary gear is processed by casting gear hobbing. The cylinder is inlaid with a wear-resistant liner, which has good wear resistance. The machine runs smoothly and works reliably.
Note: According to the material and the discharging method, dry ball mill and wet grid type ball mill can be selected.
The classification situation is roughly as follows:
1. According to the type of grinding and upgrading, it can be divided into:
(1) The medium of the ball mill is metal balls (steel balls or cast iron balls).
(2) The medium of rod mill is steel rod.
(3) The gravel mill uses gravel as the grinding medium.
(4) The self-mill relies on large pieces of ore as grinding medium, and sometimes a small amount of steel balls are added.
2. According to the discharging method, it can be divided into:
(1) The overflow type ore mill freely overflows the slurry through the hollow shaft neck at the discharge end.
(2) The grid type ball mill discharges the material by means of the holes on the grid plate installed at the discharge end.
(3) Peripheral discharge type ore grinding machine discharges materials through the periphery of the cylinder.
3. According to the shape of the cylinder, it can be divided into:
(1) Short barrel type ore mill L/D≤1.0—1.5 (L is the length of the mill. D is the diameter of the mill).
(2) Long barrel type ore grinding machine, L/D≥1.5. When L/D is 5-6, it is called a tube mill, which is divided into several chambers inside, called a multi-chamber mill, which is generally used in the cement industry.

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 grinding operation of the ball mill is carried out in simplified form. When the cylinder rotates, it is taken up and raised to a certain height. Due to the gravity of the steel ball itself, it finally falls along a certain track. The steel ball in the area is subjected to two forces: one is the force applied to the steel ball from the tangential direction during rotation; the other is the force symmetrical to the diameter of the steel ball but opposite to the above force. The occurrence is c...
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