Semi-finished pre-grinding vertical-milling and ball-milling combined grinding device
A combined grinding and pre-grinding technology, applied in the field of cement grinding, can solve the problems of main fan wear, difficult maintenance, high power consumption, etc., to achieve reasonable cement particle gradation, good grinding particle shape, easy maintenance and repair convenient effect
A combined grinding and pre-grinding technology, applied in the field of cement grinding, can solve the problems of main fan wear, difficult maintenance, high power consumption, etc., to achieve reasonable cement particle gradation, good grinding particle shape, easy maintenance and repair convenient effect
CN101862699BInactive Publication Date: 2012-01-04南京旋立重型机械有限公司
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Embodiment 1
[0022] This embodiment is a semi-final pre-grinding vertical mill and ball mill combined grinding device, the structure is as follows figure 1 As shown, it includes a semi-final pre-grinding vertical mill 5 and a ball mill 11. The structure of the semi-final pre-grinding vertical mill 5 is as follows figure 2 As shown, it includes powder separator 20, material inlet 21, grinding disc 22, upper scraper 23, reducer 24, main motor 25, air outlet 26, grinding roller 27, rocker arm 28, lower scraper 30 and semi-finished product discharge Mouth 31, grinding disc 22 is installed on the transmission device that is made up of main motor 25 and reduction mobility 4, and grinding roller 27 is installed on the rocking arm 28. The material enters the semi-final pre-grinding vertical mill through the material inlet 21. The outer edge of the grinding disc 22 is provided with a grid ring 29, and the connection between the grinding disc and the grid ring is as follows: image 3 As shown, t...
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The invention belongs to the technical field of cement grinding, in particular to a semi-finished pre-grinding vertical-milling and ball-milling combined grinding device which comprises a semi-finished pre-grinding vertical-milling machine and a ball milling machine, wherein the feeding end of the semi-finished pre-grinding vertical-milling machine is connected with the discharging end of a proportioning belt scale, a gas outlet is connected with a dust remover, and the discharging hole of the dust remover is connected with a finished product conveying machine; the discharging hole of the semi-finished pre-grinding vertical-milling machine is connected with a lifting machine through a vertical milling discharging belt, and the discharging hole of the lifting machine is connected with the feeding hole of the ball milling machine; the gas outlet of the ball milling machine is connected with the dust remover, the discharging hole of the dust remover is connected with the finished productconveying machine; and the discharging hole of the ball milling machine is connected with a powder concentrating machine through the lifting machine, the finished product fine powder discharging holeof the powder concentrating machine is connected with a third finished product conveying machine, and the crude powder discharging hole of the powder concentrating machine is connected with the feeding hole of the ball milling machine through a feed back conveying machine. The invention combines high yield and energy saving of the vertical milling machine with cement grading advantages of the ball milling machine, and has lower investment, lower electricity consumption, more reasonable grading of cement particles, very convenient maintenance and remarkable economic benefit.
Description
technical field [0001] The invention belongs to the technical field of cement grinding, in particular to a semi-final pre-grinding combined grinding device of a vertical mill and a ball mill. Background technique [0002] Traditional cement grinding uses a ball mill for grinding, which has a good shape of cement particles, good concrete operability, and good durability of buildings. However, ball mill grinding uses steel balls for crushing, which has low grinding efficiency and high power consumption. [0003] At present, the more advanced cement grinding process is a roller press plus a ball mill combined grinding device, which has two specific forms: one is the roller press for pre-grinding: using a roller press plus a dispersing classifier, followed by grinding Open-circuit grinding can increase the output of the mill by 40% to 50%. Because the material from the roller press has a considerable amount of fine powder, it is easy to cause the latter mill to over-grind and af...
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Patent Timeline
04 Jan 2012
Publication
CN101862699B
- IPC
- B02C15/00; B02C21/00
- CPC
- Y02P40/10
- Inventors
- 王志强