Ball Mill
The ball mill is widely used to grind various medium-hard ores and other materials in mining, building materials, chemical industries, etc. The ball mill can be divided into dry type and wet type according to the milling method; grid type and overflow type or center-discharge and side-discharge type according to the ways of discharge; bearing-mill and bearing pad mill according to the different methods of supporting; rim drive and center drive according to the different ways of transmission. The large mill with diameter above 3 meters is especially configured with jack-up devices for easy maintenance; the dynamical pressure bearing and the static pressure bearing can operate stably. Slow rotation is convenient for overhaul and start; the oil sprayer lubrication device can make big and small gears reliable. The main motor of large mill is high pressure asynchronous motor or synchronous motor, which should be notified in the orders
Working Principle:
The ball mill is a horizontal rotating device transmitted by the outer gear. The materials are transferred to the grinding chamber through the quill shaft evenly. There are ladder liner, ripple liner and different specifications of steel balls in the chamber. The centrifugal force caused by rotation of barrel brings the steel balls to a certain height to impact and grind the materials. And then the grinded materials are discharged through the discharging board.
|
Model
|
Speed of barrel (r/min)
|
Weight of ball (t)
|
Size of feed opening (mm)
|
size of outputting (mm)
|
Capacity (t/h)
|
Power (kw)
|
Weight (t)
|
|
900×1800
|
38
|
1.5
|
≤20
|
0.075-0.89
|
0.65-2
|
18.5
|
3.6
|
|
900×3000
|
38
|
2.7
|
≤20
|
0.075-0.89
|
1.1-3.5
|
22
|
4.6
|
|
1200×2400
|
32
|
3.8
|
≤25
|
0.075-0.6
|
1.5-4.8
|
45
|
12.5
|
|
1200×3000
|
32
|
5
|
≤25
|
0.075-0.4
|
1.6-5
|
45
|
12.8
|
|
1200×4500
|
32
|
7
|
≤25
|
0.075-0.4
|
1.6-5.8
|
55
|
13.8
|
|
1500×3000
|
27
|
8
|
≤25
|
0.075-0.4
|
2-5
|
90
|
17
|
|
1500×4500
|
27
|
14
|
≤25
|
0.075-0.4
|
3-6
|
110
|
21
|
|
1500×5700
|
27
|
15
|
≤25
|
0.075-0.4
|
3.5-6
|
132
|
24.7
|
|
1830×3000
|
24
|
11
|
≤25
|
0.075-0.4
|
4-10
|
180
|
28
|
|
1830×6400
|
24
|
23
|
≤25
|
0.075-0.4
|
6.5-15
|
210
|
34
|
|
1830×7000
|
24
|
25
|
≤25
|
0.075-0.4
|
7.5-17
|
245
|
36
|
|
2200×5500
|
21
|
30
|
≤25
|
0.075-0.4
|
10-22
|
370
|
48.5
|
|
2200×6500
|
21
|
30
|
≤25
|
0.075-0.4
|
14-26
|
280
|
52.8
|
|
2200×7500
|
21
|
33
|
≤25
|
0.075-0.4
|
16-29
|
380
|
56
|
|
2200×9500
|
21
|
38
|
≤25
|
0.074-0.4
|
18-35
|
475
|
62
|