CN204816701U - Novel material grinding system - Google Patents

Novel material grinding system Download PDF

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Publication number
CN204816701U
CN204816701U CN201520639441.6U CN201520639441U CN204816701U CN 204816701 U CN204816701 U CN 204816701U CN 201520639441 U CN201520639441 U CN 201520639441U CN 204816701 U CN204816701 U CN 204816701U
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China
Prior art keywords
efficient cyclone
grinding
vertical mill
mill
outlet
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CN201520639441.6U
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钟根
康宇
李安平
钟永超
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Nanjing Kisen International Engineering Co Ltd
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Nanjing Kisen International Engineering Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding

Abstract

The utility model relates to a novel material grinding system especially relates to an upright mill grinding system who is used for preparing raw materials or cement, grind material conveyor, lifting machine, gather dust and waste gas treatment system including feeding device, upright mill, play, the utility model discloses well adoption realizes tentatively drying to the material at the hot -blast whereabouts material in -process that passes from grinding lower part air inlet mode immediately, avoids the moisture of material to cause the influence to promoting to carry greatly, the high -efficient separator that sets up in this system constitutes integratively with standing to grind, and structural style is equitable, arranges the compactness, high -efficient separator collect for dry, material roughly select hierarchical, the material is choice hierarchical in an organic whole, reduces the grinding power consumption.

Description

Novel material grinding system
Technical field
The utility model relates to a kind of novel material grinding system, particularly relates to a kind of vertical mill grinding system for the preparation of raw material or cement.
Background technology
In the production of cement industry, powder-grinding process is maximum process procedure that consumes energy.And under the market competition and urgent economizer pressure of fierceness, make grinding power-saving technology, conservation measures is constantly brought forth new ideas, develop.Material grinding workshop section in cement industry, the grinding technology of roller mill particularly Vertical Mill has succeeded and Rapid Popularization, and reasonably material bed operation principle makes it to have comparatively wide application prospect.But from the actual effect of the most of vertical mill grinding system applied at present, also there is following problem in grinding process system in Vertical Mill.
First, the air current spray nozzle ring that tradition Vertical Mill inside is arranged, air-flow is too high by wind speed after nozzle ring, up to 60 ~ 90m/s, in mill, material mainly relies on high velocity air drive to carry out sorting to powder concentrator, air-flow by during nozzle ring because the on-way resistance of local resistance and improving material causes greater loss, cause whole Vertical Mill gas-flow resistance lose larger; Simultaneously in order to improving material, require that Vertical Mill has higher work air quantity, thus cause circulating fan overall power larger.
Secondly, for common outer circulation bed-grinding equipment and system (as roll squeezer etc.), powder hierarchy system will be selected external, system equipment can be caused huge, also need the scraper-trough conveyer that current stabilization storehouse and certain altitude are set, to form the stock column of certain speed; Meanwhile, powder selection device and grinding device are not compact in structural configuration, increase manufacturing cost and civil engineering cost.
Again, in current existing Vertical Mill, comprise a kind of only at the grinding device of the direct air intake in Vertical Mill middle and upper part to separator; Directly separator is entered by oven dry hot blast, only the material entered in separator is dried, when material moisture is large, can not completely by drying materials, moist material can block in positions such as the import and export going out to grind elevator, cause system to the bad adaptability of material, affect whole system and normally run.
Utility model content
The utility model is exactly a kind of novel material grinding implementation system proposed for the relevant issues of above bed-grinding.This grinding adopts outer circulation grinding process, and system material all promotes through mechanical system, reduces mass transport energy consumption, reduces the erosive wear of high speed dusty gas stream to grinding roller simultaneously.
For solving the problems of the technologies described above, the utility model realizes as follows: design a kind of novel material grinding system, comprise drawing-in device, Vertical Mill, go out grind materials conveying device, elevator, gather dust and exhaust treatment system;
It is characterized in that: described Vertical Mill is made up of material feeding mouth, Vertical Mill air inlet, mill, efficient cyclone, efficient cyclone charging aperture and efficient cyclone air outlet etc.; Described material feeding mouth is positioned at efficient cyclone bottom, and described Vertical Mill air inlet is positioned on the Vertical Mill shell body below mill; Described efficient cyclone is positioned at Vertical Mill top, and efficient cyclone charging aperture and efficient cyclone air outlet are positioned at efficient cyclone top.
Described drawing-in device is connected with Vertical Mill fresh material charging aperture, in Vertical Mill, mill both sides are provided with low wind speed nozzle ring, nozzle ring air-out wind speed is not more than 30m/s, and take bottom discharge method discharging, Vertical Mill discharging opening with go out grind materials conveying device and be connected, go out the outlet of grind materials conveying device to be connected with elevator import, lift outlet is connected with efficient cyclone charging aperture, and efficient cyclone takes the form of top spreading; Vertical Mill air inlet is connected with from the hot air duct of drying thermal source or is directly connected cold air duct, and efficient cyclone air outlet is connected with exhaust treatment system.
Improve as one of the present utility model, according to the characteristic of institute's grinding material, when for grinding raw material, bulk materials may be contained because it goes out in grind materials, described lift outlet arranges oscillatory type screening plant, the outlet of oscillatory type screening plant meal is connected with Vertical Mill charging aperture, and the outlet of oscillatory type screening plant fine powder is connected with efficient cyclone charging aperture.Bulk materials is filtered out and directly enters Vertical Mill and without efficient cyclone, in Vertical Mill, carry out circulation grinding until granularity diminishes.
Improve as one of the present utility model, go out in grind materials conveying device and tramp iron separator is set, the magnetic metal material pulverizing out in removing bulk materials.Going out grind materials conveying device is ribbon conveyer, vibratory feeder or discharging scraper-trough conveyer.
As further optimal enforcement scheme of the present utility model, efficient cyclone charging aperture is set to more than three or three, and each charging aperture is above spreading disk and circumferentially to being evenly arranged.Especially feed the inventory of efficient cyclone very large time, material-strewing device is set to multi-point equispaced feeding and spreading, and spreading effect is better, is conducive to efficient cyclone and selects powder.
As of the present utility model one improve, feed arrangement be ribbon conveyer, elevator or both combination device.
Material grinding system described in the utility model adopts outer circulation grinding process, material promotes through mechanical system, reduce mass transport energy consumption and energy consumption of unit product, adopt from Vertical Mill bottom air inlet mode simultaneously, hot blast is realizing tentatively drying material through in falling material process, avoid the moisture of material to impact lifting conveying greatly, can arrange oscillatory type screening plant according to characteristics such as raw meal particle sizes at lift outlet in addition, system is stronger to material applicability.
Good effect of the present utility model:
Adopt from Vertical Mill bottom air inlet mode in the utility model, realize tentatively drying material through in falling material process at hot blast, avoid the moisture of material to impact lifting conveying greatly; The efficient cyclone arranged in this system is integrally formed with Vertical Mill, and version is reasonable, characteristics of compact layout, and efficient cyclone integrates drying materials, classification roughly selected by material, the selected classification of material, reduces grinding pow consumption.Specifically comprise following aspect:
1, outer circulation vertical mill grinding technique is adopted, play bed-grinding advantage, material realizes outer circulation lifting and is delivered to efficient cyclone simultaneously, more existing airlift is more energy-conservation, and then reduce product specific energy consumption, reduce the erosive wear of high speed dusty gas stream to grinding roller simultaneously, be conducive to extension device service life.
2, adopt from Vertical Mill bottom air inlet mode, hot blast, through the preliminary oven dry realized in falling material process material, is avoided the moisture of material to impact lifting conveying greatly, is improved system to the applicability of material.
3, the efficient cyclone arranged in this system and Vertical Mill have a style of one's own, and version is reasonable, characteristics of compact layout, efficient cyclone integrates drying materials, roughly selects classification, selected classification, adopt top Multipoint Uniform spreading dispersion simultaneously, improve the efficiency of separation further, reduce grinding pow consumption.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with detailed description of the invention and accompanying drawing, the utility model is described in further details.At this, exemplary embodiment of the present utility model and illustrating for explaining the utility model, but not as to restriction of the present utility model.
Fig. 1 is process flow diagram of the present utility model.
Fig. 2 is the process flow diagram of a kind of improvement of the utility model.
Fig. 3 is the process flow diagram that the utility model another kind improves.
In figure, 1 drawing-in device 2 Vertical Mill 2-1 material feeding mouth
2-2 Vertical Mill air inlet 2-3 mill 2-4 efficient cyclone
2-5 efficient cyclone charging aperture 2-6 efficient cyclone air outlet
3 go out grind materials conveying device 4 elevator
5 gather dust and exhaust treatment system 6 tramp iron separator
7 oscillatory type screening plants
Detailed description of the invention
As shown in Figure 1, novel material grinding system described in the utility model, comprises drawing-in device 1, Vertical Mill 2, goes out grind materials conveying device 3, elevator 4, to gather dust and exhaust treatment system 5; It is characterized in that: described Vertical Mill 2 is made up of material feeding mouth 2-1, Vertical Mill air inlet 2-2, mill 2-3, efficient cyclone 2-4, efficient cyclone charging aperture 2-5 and efficient cyclone air outlet 2-6 etc.; Described material feeding mouth 2-1 is positioned at efficient cyclone 2-4 bottom, and described Vertical Mill air inlet 2-2 is positioned on the Vertical Mill shell body below mill 2-3; Described efficient cyclone 2-4 is positioned at Vertical Mill 2 top, and efficient cyclone charging aperture 2-5 and efficient cyclone air outlet 2-6 is positioned at efficient cyclone 2-4 top.
Described drawing-in device 1 is connected with Vertical Mill 2 fresh material charging aperture 2-1, in Vertical Mill 2, mill 2-3 both sides are provided with low wind speed nozzle ring, nozzle ring air-out wind speed is not more than 30m/s, Vertical Mill takes the discharge way of bottom discharging, Vertical Mill 2 discharging opening with go out grind materials conveying device 3 and be connected, go out grind materials conveying device 3 to export and be connected with elevator 4 import, elevator 4 exports and is connected with efficient cyclone material feeding mouth 2-5, and efficient cyclone 2-4 takes the form of top spreading; Vertical Mill air inlet 2-2 is connected with from the hot air duct of drying thermal source or is directly connected cold air duct, and efficient cyclone air outlet 2-6 is connected with exhaust treatment system 5.
Efficient cyclone 2-4 integrates drying materials, roughly selects classification, selected classification, and integrated with Vertical Mill, efficient cyclone 2-4 body is without independent air intake mouth.When the wind entering Vertical Mill 2 passes through between Vertical Mill 2 housing and mill, scrape with mill the material fallen and carry out preliminary heat exchange, realize the preliminary oven dry of material, the hot blast after heat exchange upwards enters efficient cyclone 2-4, and then realizes out Vertical Mill material and select powder and oven dry at efficient cyclone 2-4.
Improve as one of the present utility model, as shown in Figure 2, go out in grind materials conveying device 3 and tramp iron separator 6 is set, the magnetic metal material pulverizing out in removing bulk materials, be conducive to the stable operation of Vertical Mill, effectively prevent the infringement of abrasive resistance materials for roller mill, extend the service life of grinding device.
Improve as one of the present utility model, as shown in Figure 3, according to the characteristic of institute's grinding material, when for grinding raw material, bulk materials may be contained because it goes out in grind materials, described elevator 4 outlet arranges oscillatory type screening plant 7, and the outlet of oscillatory type screening plant 7 meal is connected with Vertical Mill charging aperture 2-1, and the outlet of oscillatory type screening plant 7 fine powder is connected with efficient cyclone charging aperture 2-5.Bulk materials is filtered out and directly enters Vertical Mill and without efficient cyclone, in Vertical Mill, carry out circulation grinding until granularity diminishes.
As further optimal enforcement scheme of the present utility model, efficient cyclone charging aperture 2-5 quantity is more than three or three, and each charging aperture is above spreading disk and circumferentially to being evenly arranged.Especially, when the inventory of feeding efficient cyclone 2-4 is very large, material-strewing device is set to multi-point equispaced feeding and spreading, and spreading effect is better, is conducive to efficient cyclone 2-4 and selects powder.
As another kind of improvement project of the present utility model, feed arrangement 1 be ribbon conveyer, elevator or both combination device.

Claims (5)

1. a novel material grinding system, comprises drawing-in device (1), Vertical Mill (2), goes out grind materials conveying device (3), elevator (4), to gather dust and exhaust treatment system (5); It is characterized in that: described Vertical Mill (2) is made up of material feeding mouth (2-1), Vertical Mill air inlet (2-2), mill (2-3), efficient cyclone (2-4), efficient cyclone charging aperture (2-5) and efficient cyclone air outlet (2-6); Described material feeding mouth (2-1) is positioned at efficient cyclone (2-4) bottom, mill (2-3) top; Mill (2-3) both sides are also provided with low wind speed nozzle ring; Vertical Mill air inlet (2-2) is positioned on Vertical Mill (2) shell body of mill (2-3) below; Efficient cyclone (2-4) is positioned at Vertical Mill (2) top, and efficient cyclone charging aperture (2-5) and efficient cyclone air outlet (2-6) are positioned at efficient cyclone (2-4) top; Drawing-in device (1) is connected with material feeding mouth (2-1), Vertical Mill (2) discharging opening with go out grind materials conveying device (3) and be connected, go out grind materials conveying device (3) outlet to be connected with elevator (4) import, elevator (4) outlet is connected with efficient cyclone charging aperture (2-5), and efficient cyclone (2-4) top arranges spreading disk; Efficient cyclone air outlet (2-6) is connected with exhaust treatment system (5).
2. novel material grinding system as claimed in claim 1, it is characterized in that: described in go out that grind materials conveying device (3) is ribbon conveyer, vibratory feeder or discharging scraper-trough conveyer, go out in grind materials conveying device (3) and tramp iron separator (6) be set.
3. novel material grinding system as claimed in claim 1, is characterized in that: described efficient cyclone charging aperture (2-5) quantity is more than three or three, and each charging aperture is above spreading disk and circumferentially to being evenly arranged.
4. novel material grinding system as claimed in claim 1, it is characterized in that: described elevator (4) exit is provided with oscillatory type screening plant (7), oscillatory type screening plant (7) outlet has two places, and a place is meal outlet, and another place is fine powder outlet; Described meal outlet is connected with Vertical Mill charging aperture (2-1), and described fine powder outlet is connected with efficient cyclone charging aperture (2-5).
5. novel material grinding system as claimed in claim 1, is characterized in that: described drawing-in device (1) is ribbon conveyer, the device of elevator or both combinations.
CN201520639441.6U 2015-08-21 2015-08-21 Novel material grinding system Active CN204816701U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110449224A (en) * 2019-08-09 2019-11-15 江苏吉能达环境能源科技有限公司 A kind of micropowders vertical rolls mill
CN111729728A (en) * 2020-07-09 2020-10-02 天津水泥工业设计研究院有限公司 Novel dry method white cement raw material preparation device and process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110449224A (en) * 2019-08-09 2019-11-15 江苏吉能达环境能源科技有限公司 A kind of micropowders vertical rolls mill
CN110449224B (en) * 2019-08-09 2021-09-21 江苏吉能达环境能源科技有限公司 Vertical roller mill for superfine powder
CN111729728A (en) * 2020-07-09 2020-10-02 天津水泥工业设计研究院有限公司 Novel dry method white cement raw material preparation device and process

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