CN105344446A - Roller press pregrinding system adopting light grinding medium - Google Patents
Roller press pregrinding system adopting light grinding medium Download PDFInfo
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- CN105344446A CN105344446A CN201510842973.4A CN201510842973A CN105344446A CN 105344446 A CN105344446 A CN 105344446A CN 201510842973 A CN201510842973 A CN 201510842973A CN 105344446 A CN105344446 A CN 105344446A
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- ball mill
- mill
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- ball
- pregrinding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
- B02C21/002—Disintegrating plant with or without drying of the material using a combination of a roller mill and a drum mill
- B02C21/005—Disintegrating plant with or without drying of the material using a combination of a roller mill and a drum mill the roller mill having cooperating rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a roller press pregrinding system adopting a light grinding medium. The roller press pregrinding system comprises a storage silo, a roller press, a ball mill, a mill-out bucket elevator, a powder concentrator, a cyclone tube, a system dust collector and a system fan, wherein a coarse powder outlet and an air outlet are formed in the powder concentrator, and the coarse powder outlet of the powder concentrator is connected with a feed opening of the ball mill; a discharge opening of the ball mill is connected with a feed opening of the mill-out bucket elevator, and an air outlet of the cyclone tube is connected with an inlet of the system dust collector; an air outlet of the system dust collector is connected with the system fan, and a discharge opening of the system dust collector is a second finished product outlet; a discharge opening of the cyclone tube is a first finished product outlet, and the ball mill adopts alumina ceramic balls as the grinding medium. The roller press pregrinding system can regulate cement particle size gradation, improve the phenomenon of paste balls in the mill, improve the grinding efficiency in the mill, reduce noises in the running process of the ball mill and reduce the pollution on finished products, the unit power consumption is reduced, and the performance of finished product cement is improved.
Description
Technical field
The present invention relates to a kind of cement manufacture plant, particularly a kind of roll squeezer pregrinding system adopting light abrasive media.
Background technology
Cement industry is the industry of a large amount of power consumption, and the unit power consumption of cement is about 80 ~ 100kWh/t, and wherein cement grog grinding power consumption accounts for greatly, therefore reduces the important content that cement grog grinding power consumption is environmental protection and cleaner production.
Along with the fast development of cement industry equipment technology, traditional poor efficiency ball mill progressively replace by the novel milling equipment such as vertical roller grinder, roll squeezer, and towards milling equipment maximization future development.Meanwhile, cement grinding process also there occurs great variety: roller mill final grinding system and roll squeezer pregrinding system just progressively substitute circle stream milling system, to reach energy-saving and cost-reducing object.Wherein the fragmentation of roll squeezer brilliance has been put into practice with corase grind function and has generally been admitted, and the technical development of roll squeezer equipment and technics is very fast, and the application of various extruding grinding process is also on the increase.At present to play roller press combination grinding that ball mill fine grinding function is feature and to select the whole grinding process of roll squeezer half that powder and ball milling potential are feature to become mainstream applications mode with excavation.
In real-world operation, still there are the following problems for roll squeezer pregrinding system: the narrow particle size distribution of (1) finished cement, and uniformity coefficient is high, and normal consistency water requirement more common circle stream milling system is high; (2) in equal volume abrasive body situation, the unit weight of ball mill consumed power and abrasive body is proportional, therefore adopts with steel ball the power consumption of the roll squeezer pregrinding system being abrasive media high; (3) ball mill can produce strong vibration and noise when comminuting matter, and noise, up to large 100 ~ 115dB (A), endangers very large to operator and surrounding environment; (4) higher in environment temperature, clinker temperature is higher, and when finish fineness is comparatively thin or the comprehensive moisture of mill feed material is larger, easily occurs " paste ball " phenomenon, thus cause grinding efficiency to reduce, production declining in ball mill, power consumption raises.
Summary of the invention
The present invention provides a kind of roll squeezer pregrinding system adopting light abrasive media for solving in known technology the technical problem that exists, this system can regulate cement granules grating, improves " paste ball " phenomenon in mill, the grinding efficiency improved in mill, the pollution that reduces the noise of ball mill in running, reduce finished product, and then realize the unit power consumption reducing roll squeezer pregrinding system, improve the performance of finished cement, reduce the harm of noise to operator and surrounding environment.
The present invention for the technical scheme solving in known technology the technical problem that exists and take is: a kind of roll squeezer pregrinding system adopting light abrasive media, comprise connect successively storage bin, roll squeezer, ball mill, go out to grind bucket elevator, powder concentrator, cyclone cylinder, system dust-precipitator and system fan; Described powder concentrator is provided with meal outlet and air outlet, and the meal outlet of described powder concentrator is connected with the charging aperture of described ball mill; The discharging opening of described ball mill is connected with the described charging aperture going out to grind bucket elevator, the air outlet of described cyclone cylinder is connected with the import of described system dust-precipitator, the air outlet of described system dust-precipitator is connected with described system fan, and the discharging opening of described system dust-precipitator is the second product outlet; The discharging opening of described cyclone cylinder is the first product outlet, and described first product outlet all carries the charging aperture of skewed slot to be connected with finished product with described second product outlet; Described ball mill adopts aluminium oxide ceramic ball as abrasive media.
The advantage that the present invention has and good effect are: be proven: adopt aluminium oxide ceramic ball as the broad particle distribution of the finished cement of the roll squeezer pregrinding system of abrasive media, cement normal consistency water requirement is lower, and under identical filling rate condition, the operate power of ball mill can reduce by 40% ~ 60%, and the unit power consumption of system can reduce by 8% ~ 15%.Meanwhile, aluminium oxide ceramic ball smooth surface, can reduce the absorption to fine powder material.When grinding is to identical specific area, aluminium oxide ceramic ball surface " paste ball " phenomenon is obviously improved, thus improves the grinding efficiency in ball mill.Aluminium oxide ceramic ball unit weight is little in addition, is about 40% ~ 50% of steel ball or steel forging, is that ball mill noise when comminuting matter of abrasive media obviously reduces, reduces the harm to operator and surrounding environment with aluminium oxide ceramic ball.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, storage bin, 2, roll squeezer, 3, belt conveyor, 4, circulation bucket elevator, 5, ball mill, 6, conveying skewed slot, 7, go out to grind bucket elevator, 8, conveying skewed slot, 9, powder concentrator, 10, cyclone cylinder, 11, system dust-precipitator, 12, system fan, 13, grinding machine dust-precipitator, 14, grind dust collecting fan, 15, finished product conveying skewed slot.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of roll squeezer pregrinding system adopting light abrasive media, comprise connect successively storage bin 1, roll squeezer 2, ball mill 5, go out to grind bucket elevator 7, powder concentrator 9, cyclone cylinder 10, system dust-precipitator 11 and system fan 12; Described powder concentrator 9 is provided with meal outlet and air outlet, and the meal outlet of described powder concentrator 9 is connected with the charging aperture of described ball mill 5; The discharging opening of described ball mill 5 is connected with the described charging aperture going out to grind bucket elevator 7, the air outlet of described cyclone cylinder 10 is connected with the import of described system dust-precipitator 11, the air outlet of described system dust-precipitator 11 is connected with described system fan 12, and the discharging opening of described system dust-precipitator 11 is the second product outlet; The discharging opening of described cyclone cylinder 10 is the first product outlet, and described first product outlet all carries the charging aperture of skewed slot 15 to be connected with finished product with described second product outlet; Described ball mill 5 adopts aluminium oxide ceramic ball as abrasive media.Specifically, described ball mill 5 is provided with coarse grinding cabin and fine grinding storehouse, and the coarse grinding cabin of described ball mill 5 and/or fine grinding storehouse adopt aluminium oxide ceramic ball as abrasive media.Aluminium oxide ceramic ball is adopted to substitute traditional steel ball or steel forging.When the coarse grinding cabin of ball mill 5 or fine grinding storehouse adopt aluminium oxide ceramic ball as abrasive media, the position of partition panel in ball mill 5 suitably should be adjusted, to balance the grainding capacity in coarse grinding cabin and fine grinding storehouse.
During work, material feeding roller press 2 from storage bin 1 carries out roll-in and mills, a part of material after roll-in is milled adopts belt conveyor 3 to feed ball mill 5 and grinds, another part material is delivered to storage bin 1 by circulation bucket elevator 4, and then feeding roller press 2 carries out circulation roll-in and mills.The part that material after grinding is relatively thin enters grinding machine dust-precipitator 13 and gathers dust under the pulling of mill dust collecting fan 14; The part that material after grinding is relatively thick and the material that grinding machine dust-precipitator 13 is collected all adopt out mill bucket elevator 7 to serve conveying skewed slot 8, deliver to powder concentrator 9 through conveying skewed slot 8.The fine powder that powder concentrator 9 is selected is finished cement, and meal is again sent into ball mill 5 and ground.
The present invention in order to realize regulating finished cement size distribution, improve " paste ball " phenomenon in mill, the grinding efficiency improved in mill, the pollution that reduces the noise of ball mill in running, reduce finished product, and then realize the unit power consumption reducing roll squeezer pregrinding system, improve the performance of finished cement, reduce the harm of noise to operator and surrounding environment, adopt aluminium oxide ceramic ball as abrasive media.
For circle stream ball milling powder grinding system, mill feed material size is 95%≤25mm, 100%≤50mm, the percussion of steel ball of the pulverizing of material mainly by falling in mill, also the abrasive action that divides of relying part.Therefore, with the larger steel ball of unit weight for abrasive media more can play the percussion of abrasive body to material.And for roll squeezer pregrinding system, material through roll squeezer 2 extruding pulverize laggard enter ball mill 5.After extruding, raw meal particle size reduces, and the crack of material increases, and grindability is improved.Therefore the pulverizing of the interior material of mill, to be ground to master, needs abrasive body to the impact of material hardly in roll squeezer pregrinding system.Therefore, for roll squeezer pregrinding system, adopt the less aluminium oxide ceramic ball of unit weight to replace traditional steel ball or steel forging to be abrasive media, the abrasive action of aluminium oxide ceramic ball to material can be given full play to.Simultaneously, the operate power of grinding machine and the proportional relation of the unit weight of abrasive body, adopt the less aluminium oxide ceramic ball of unit weight to replace traditional steel ball or steel forging as abrasive media, ball mill operate power can reduce by 40% ~ 60%, and the unit power consumption of system can reduce by 8% ~ 15%.
Traditional abrasive media steel ball or steel forging process through casting, and fine material is more easily adsorbed on steel ball or steel forging surface, forms " paste ball " phenomenon.And aluminium oxide ceramic ball adopts high-temperature firing to form, smooth surface, under identical grinding operating mode, can reduce the absorption to fine powder material.When grinding is to identical specific area, aluminium oxide ceramic ball surface " paste ball " phenomenon is obviously improved, thus improves the grinding efficiency in ball mill.
The cylinder lining plate of current ball mill 5 adopts high-chromium cast liner plate to be main mostly, and abrasive media adopts high chrome ball or steel forging mostly.In grinding machine running, abrasive body strikes the collision on hard liner plate or between abrasive body, all can produce strong noise.The unit weight of abrasive body is larger, and the noise of generation is larger.And aluminium oxide ceramic ball unit weight is little, be only 1.9 ~ 2.2t/m
340% ~ 50% of steel ball or steel forging, therefore be that the ball mill of the abrasive media abrasive body when comminuting matter obviously reduces the noise that the collision between the impact of liner plate and material, abrasive body is formed with aluminium oxide ceramic ball, reduce the harm to operator and surrounding environment.
In sum, the present invention by the abrasive media in ball mill in roll squeezer pregrinding system by the less aluminium oxide ceramic ball of unit weight, replace traditional steel ball or steel forging, the grinding efficiency in mill can be improved, improve " paste ball " phenomenon in mill, finished cement size distribution can be regulated again, improve cement water requirement.Meanwhile, the pollution noise of ball mill in running can be reduced, reducing to finished product.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (1)
1. adopt the roll squeezer pregrinding system of light abrasive media, it is characterized in that, comprise connect successively storage bin, roll squeezer, ball mill, go out to grind bucket elevator, powder concentrator, cyclone cylinder, system dust-precipitator and system fan; Described powder concentrator is provided with meal outlet and air outlet, and the meal outlet of described powder concentrator is connected with the charging aperture of described ball mill; The discharging opening of described ball mill is connected with the described charging aperture going out to grind bucket elevator, the air outlet of described cyclone cylinder is connected with the import of described system dust-precipitator, the air outlet of described system dust-precipitator is connected with described system fan, and the discharging opening of described system dust-precipitator is the second product outlet; The discharging opening of described cyclone cylinder is the first product outlet, and described first product outlet all carries the charging aperture of skewed slot to be connected with finished product with described second product outlet; Described ball mill adopts aluminium oxide ceramic ball as abrasive media.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510842973.4A CN105344446A (en) | 2015-11-25 | 2015-11-25 | Roller press pregrinding system adopting light grinding medium |
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| CN201510842973.4A CN105344446A (en) | 2015-11-25 | 2015-11-25 | Roller press pregrinding system adopting light grinding medium |
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| CN105344446A true CN105344446A (en) | 2016-02-24 |
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| CN201510842973.4A Pending CN105344446A (en) | 2015-11-25 | 2015-11-25 | Roller press pregrinding system adopting light grinding medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107350062A (en) * | 2017-08-21 | 2017-11-17 | 天津水泥工业设计研究院有限公司 | A kind of powder concentrator external Vertical Mill Joint grinding system using non-metal grinding medium |
| CN109201216A (en) * | 2018-10-11 | 2019-01-15 | 合肥水泥研究设计院有限公司 | A kind of device modified for cement powder |
| CN113457816A (en) * | 2021-07-01 | 2021-10-01 | 厦门艾思欧标准砂有限公司 | System and process for preparing spheroidized powder by adopting vertical grinding machine |
| CN114377790A (en) * | 2021-07-22 | 2022-04-22 | 安徽金岩高岭土科技有限公司 | Process for grinding and processing kaolin sand and powder through ball crusher |
Citations (7)
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| JPH04135654A (en) * | 1990-12-29 | 1992-05-11 | Kawasaki Heavy Ind Ltd | Grinder |
| DE4334904A1 (en) * | 1993-10-13 | 1995-04-20 | Kloeckner Humboldt Deutz Ag | Circulating grinding plant |
| JPH0777975B2 (en) * | 1990-12-29 | 1995-08-23 | 川崎重工業株式会社 | Crushing equipment such as cement clinker |
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| CN203791025U (en) * | 2014-03-06 | 2014-08-27 | 中国中材国际工程股份有限公司 | Pre-grinding system of roller press |
| CN104845584A (en) * | 2015-01-06 | 2015-08-19 | 朱晖 | Nonmetal grinding medium for cement grinding, and application thereof |
| CN205182914U (en) * | 2015-11-25 | 2016-04-27 | 天津水泥工业设计研究院有限公司 | Roll squeezer that adopts light attrition medium is grinding system in advance |
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2015
- 2015-11-25 CN CN201510842973.4A patent/CN105344446A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04135654A (en) * | 1990-12-29 | 1992-05-11 | Kawasaki Heavy Ind Ltd | Grinder |
| JPH0777975B2 (en) * | 1990-12-29 | 1995-08-23 | 川崎重工業株式会社 | Crushing equipment such as cement clinker |
| DE4334904A1 (en) * | 1993-10-13 | 1995-04-20 | Kloeckner Humboldt Deutz Ag | Circulating grinding plant |
| CN101987311A (en) * | 2009-08-01 | 2011-03-23 | 王华业 | Joint grinding process of FPP mill |
| CN203791025U (en) * | 2014-03-06 | 2014-08-27 | 中国中材国际工程股份有限公司 | Pre-grinding system of roller press |
| CN104845584A (en) * | 2015-01-06 | 2015-08-19 | 朱晖 | Nonmetal grinding medium for cement grinding, and application thereof |
| CN205182914U (en) * | 2015-11-25 | 2016-04-27 | 天津水泥工业设计研究院有限公司 | Roll squeezer that adopts light attrition medium is grinding system in advance |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107350062A (en) * | 2017-08-21 | 2017-11-17 | 天津水泥工业设计研究院有限公司 | A kind of powder concentrator external Vertical Mill Joint grinding system using non-metal grinding medium |
| CN109201216A (en) * | 2018-10-11 | 2019-01-15 | 合肥水泥研究设计院有限公司 | A kind of device modified for cement powder |
| CN113457816A (en) * | 2021-07-01 | 2021-10-01 | 厦门艾思欧标准砂有限公司 | System and process for preparing spheroidized powder by adopting vertical grinding machine |
| CN114377790A (en) * | 2021-07-22 | 2022-04-22 | 安徽金岩高岭土科技有限公司 | Process for grinding and processing kaolin sand and powder through ball crusher |
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Application publication date: 20160224 |
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