Grate ball mill_Zhengzhou Hengxing Heavy Equipment Co.,Ltd

PRODUCTS CATEGORY

NEW PRODUCTS

Tel: 0086-371-67858720

E-mail: sales006@zzhxmachine.com

Add: No.8 Honegy Road, High-tech development Zone

Grate ball mill

Raw Materials :Various ore, cement, quartz and etc
Feeding Range :25mm
Max Capacity :90TPH
Application :Grinding ores into fine powder
Main Features :Heavy duty design, stable performance
Shipping Port :Qingdao,Tianjin,Shanghai
Inquiry Now
Feature and benefits Products's AdvantagesSpecificationsInquiry

1. Grate liner, 2. Bearing inner cover, 3.Hollow shaft 4.dustpan shape liner 5.central liner, 6. Rib 7. Wedge block.
The grate ball mill is usually used in the first segment of the two stages, orplace of discharging the rough ore.
The grate ball mill is roughly composed of the cylinder, cylinder liner,biggear ring, discharging grate,and ore feeding device. Except there is adischarging grate plate installed at the discharging end, all the other issimilar with the overflow ball mill. The grate ball mill discharging cover headand grate plate have the structure as the drawing: grate liner, bearing innercover, hollow shaft, dustpan liner, central liner, rib and wedge block.
In the head cover of the hollow shaft of the discharging end, it has bearinginner cover and discharging grate installed and the later is made from centralliner, grate liner and dustpan liner etc. There are eight radial rib casted onthe inner wall of the head cover, which divide the head cover into 8 fan rooms.There installed the dustpan liner inside each fan shape room, with the boltfixed on the end cover. Finally the grate plate are installed on each fan roomshaped by the dustpan liner. The grate liner has two kinds of structure: one isthe group formed by two pcs, pressed by the wedge block, which get fixedtightly on head cover with the bolt getting through the rib. The central partare supported by the central liner to prevent them from declining and droppingoff. The other kind is get two pcs into one block, fixing with bolt directly.The central liner is star shape, formed by two block, tightened on the rib withthe bolt.
The hole on the grate liner is arranged at inclining direction. The width ofthe hole is getting bigger gradually to the discharging end, which can preventthe slurry from regorging and rough granularity from blocking. The slurry flowinto the fan shape room through the hole on the grate plate from the lower partof the discharging end, and get passed up to the upper part along the cylinderrotating and discharged off the hole path. The hollow shaft neck has thegrinding proof inner cover, with one end made of trumpet shape blade to leadthe slurry to flow out of the mill. As the slurry in this kind of mill isdischarged through the grate plate, it is called the grate ball mill.

The characteristics of the grate ball mill:
1. The fast discharging speed, and high production capacity( 20~30% higher thanoverflow type, and so does power saving )
2. Less over grinding phenomena--discharging at the lower horizontal level.Less slurry stored inside. And easy to discharge the grinded fine particles intime.
3. Much ball loading- not only big ball but also small ball, for the gratefence. Having the good grinding condition.
4. The complicated structure than overflow---multi grate fence, taking certainroom and reducing the effective volume.
The grinded material are carried by the discharging grate plate in the grateball mill, which has the compelling function, and fast discharging speed. Theslurry level in the discharging end is lower than that of the lowest motherline level in the discharged shaft neck, so it is called the ore low leveldischarging. The mill has height difference from the material input end to theoutput end, and the slurry get through the mill with faster speed, dischargingthe grinded particles in time. As little slurry stored in the grate type ballmill and blocked by the grate plate, the mill can load more balls, easy to loadthe small ball. When the steel ball dropping off, the striking functionlessened by the slurry resistance will be less. These causes make theproduction capacity and efficiency is higher than that of the overflow mill,with rough granularity finished product and not easy to get over crushing.

Model

Rotating speed
(r/min)

Weight of ball (t)

Feeding size
(mm)

Discharge size
(mm)

Capacity
(t/h)

Power
(kw)

Weight
(t)

900×1800

36~38

1.5

20

0.075-0.89

0.65-2

18.5

4.6

900×3000

36

2.7

20

0.075-0.89

1.1-3.5

22

5.6

1200×2400

36

3

25

0.075-0.6

1.5-4.8

30

12

1200×3000

36

3.5

25

0.074-0.4

1.6-5

37

12.8

1200×4500

32.4

5

25

0.074-0.4

1.6-5.8

55

13.8

1500×3000

29.7

7.5

25

0.074-0.4

2-5

75

15.6

1500×4500

27

11

25

0.074-0.4

3-6

110

21

1500×5700

28

12

25

0.074-0.4

3.5-6

130

24.7

1830×3000

25.4

11

25

0.074-0.4

4-10

130

28

1830×4500

25.4

15

25

0.074-0.4

4.5-12

155

32

1830×6400

24.1

21

25

0.074-0.4

6.5-15

210

34

1830×7000

24.1

23

25

0.074-0.4

7.5-17

245

36

2100×3000

23.7

15

25

0.074-0.4

6.5-36

155

34

2100×4500

23.7

24

25

0.074-0.4

8-43

245

42

2100×7000

23.7

26

25

0.074-0.4

8-48

280

50

2200×4500

21.5

27

25

0.074-0.4

9-45

280

48.5

2200×6500

21.7

35

25

0.074-0.4

14-26

380

52.8

2200×7000

21.7

35

25

0.074-0.4

15-28

380

54

2200×7500

21.7

35

25

0.074-0.4

15-30

380

56

2400×3000

21

23

25

0.074-0.4

7-50

245

54

2400×4500

21

30

25

0.074-0.4

8.5-60

320

65

2700×4000

20.7

40

25

0.074-0.4

12-80

400

94

2700×4500

20.7

48

25

0.074-0.4

12-90

430

102

3200×4500

18

65

25

0.074-0.4

------

800

137

*E-mail
*Content
Product Name
Your Name
Company
Tel/Fax
Msn/Skype
Send Message