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Horizontal Grinding Mill  Overflow Type, Grate-discharge Type, and Compartment Type  Ball Mill [KURIMOTO, LTD.]

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Horizontal Grinding Mill  Overflow Type, Grate-discharge Type, and Compartment Type  Ball Mill

Division for this product Plant Engineering and Machinery Division

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Summary

The Ball Mill is designed to grind materials by turning the cylindrical shell with grinding medium (e.g. steel balls, cylpeb, and pebbles) put in the shell, and has a simple structure and ease of handling. Furthermore, The Ball Mill of a large capacity has been available to a very extensive range of applications in both dry and wet processing.


Features

  • Overflow Type
    The overflow type of Ball Mill is designed to overflow and discharge materials from the trunnion on the outlet side. By combining it with a mechanical classifier or wet-processing cyclone, you are able to extensively use this type for grinding in closed circuit or for special applications such as re-grinding in open circuit. Generally, it is best suited to fine-grind materials up to the particle sizes ranging from 150 to 200 mesh.
  • Grate-discharge Type
    The grate-discharge type of Ball Mill has a grate at the outlet of the shell and causes less excessive grinding, compared to the overflow type. Therefore, generally, it is best suited to grind materials up to the particle sizes ranging from 60 to 100 mesh.
  • Compartment type
    The compartment type of Ball Mill has a longer shell, inside of which is comparted into 2 to 3 chambers with grates and is best suited to produce products grinding from coarse particles of some 25 mm to fine particles of some 200 mesh.
  • Other batch types of Ball Mill are best suited to produce ultra fine particles in particular.

Use

  • Mining Industry : Used to grind various kinds of ores.
  • Ceramic Industry : Used to finish and grind various kinds of raw materials and cement.
  • Smelting Industry : Used to grind various kinds of slag.
  • Power generation : Used to grind coal for combustion use.
  • Chemical Industry : Used to grind coke, ilmenite, and others.

Construction

Overflow Type
1) Shell
2) Trunnion
3) Trunnion cylindrical liner on inlet side
4) Trunnion cylindrical liner on outlet side
5) Trunnion bearing
6) Drum gear
7) Liner
8) Gear case
9) Combination feeder

Grate-discharge Type
1) Shell
2) Trunnion
3) Trunnion cylindrical liner on inlet side
4) Trunnion cylindrical liner on outlet side
5) Trunnion bearing
6) Drum gear
7) Liner
8) Gear case
9) Combination feeder
10) Grate

Compartment Type
1) Shell
2) Trunnion
3) Trunnion cylindrical liner on inlet side
4) Trunnion cylindrical liner on outlet side
5) Trunnion bearing
6) Drum gear
7) Liner
8) Gear case
9) Drum feeder
10) Trommel screen

Specifications

SizeInside dia.
Length of shell
(mm)
Ball charging amount
(tons)
Mill revolution
(min-1)
Power consumption
(kW)
Motor output
(kW)
Capacity (t/h)
AB
1212
1515
1200×1200
1500×1500
2.05
4.15
32.0
29.0
16.5
35.8
18.5
37
1.5
3.5
1.3
3.1
1818
2121
1800×1800
2100×2100
7.4
11.7
25.3
23.0
65.3
106
75
110
6.6
11.0
5.8
9.6
2424
2430
2400×2400
2400×3000
17.6
22.0
21.4
21.4
167
209
190
220
18.0
22.4
15.8
19.6
2727
2733
2700×2700
2700×3300
25.4
31.0
20.1
20.1
250
306
260
340
27.5
33.7
24.1
29.6
3030
3036
3000×3000
3000×3600
35.0
42.0
18.8
18.8
350
420
375
450
39.5
47.3
34.6
41.5
3236
3242
3200×3600
3200×4200
48.0
56.0
18.0
18.0
484
565
510
600
55.5
65.0
48.7
57.0
3442
3648
3400×4200
3600×4800
63.5
81.5
17.5
16.6
655
845
700
900
75.5
99.0
66.0
86.0
3848
4051
3800×4800
4000×5100
91.5
108.0
16.2
15.8
960
1160
1000
1200
113.0
139.0
99.0
122.0

Note)

Capacities listed in the above table are based on tests with ores of Wi-13KWH/MT with wet processing in closed circuit.
A : Capacities are based on tests with grinding material of 80% and 10 mm in pass particle size to produce products of 80% and 200mm (approximately 65 mesh).
B : Capacities are based on tests with grinding material of 80% and 0.8 mm in pass particle size to produce products of 80% and 74mm (approximately 200 mesh).
However, the raw material particle size shows new feed rate to the mill, the product particle size shows overflow rate from classifier, and the processing capacity shows new feed rate (i.e., overflow rate from classifier).

Typical Flow Sheet

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