CN106694187B - Cement semi-final grinding system with constant flow metering device - Google Patents
Cement semi-final grinding system with constant flow metering device Download PDFInfo
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- CN106694187B CN106694187B CN201510448494.4A CN201510448494A CN106694187B CN 106694187 B CN106694187 B CN 106694187B CN 201510448494 A CN201510448494 A CN 201510448494A CN 106694187 B CN106694187 B CN 106694187B
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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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Abstract
The present invention relates to a kind of half final grinding systems of cement, especially half final grinding system of cement with current stabilization metering device；First weigher is set below its first current stabilization storehouse, weigher conveys skewed slot by third and is connected with ball mill import, material overflow port is set in the middle part of the first current stabilization storehouse, overflow port is connected by the 4th conveying skewed slot with the second current stabilization storehouse, second weigher is set below the second current stabilization storehouse, and the second weigher is connected with pre- grinding device feed inlet；Material from proportioning station feeds the second current stabilization storehouse, material in second current stabilization storehouse quantitatively feeds pre- grinding device by the second weigher, by pre- grinding device grinding powdering material, powder is selected twice using bucket elevator feeding V-type powder concentrator, fine powder concentrator；The present invention provides a kind of stable, half final grinding systems of cement with current stabilization metering device of the stable operation of two core grinding devices especially in realization system.
Description
Technical field
The present invention relates to a kind of half final grinding systems of cement, half whole grinding system of the cement especially with current stabilization metering device
System.
Background technique
In cement grinding field, tube mill since capacity usage ratio and mill efficiency are low, in terms of energy saving grinding gradually by
Efficient bed of material milling equipment replaces.Vertical Mill, roll squeezer are bed of material milling equipments, and mill efficiency is higher.Vertical Mill, roll squeezer are pre-
Grinding system is currently the mainstream of cement grinding technology, and on the basis of ball mill, realization significantly proposes production and energy conservation.Especially
It is that in recent years, the country has started the whole grinding agitation of one cement half, on the basis of cement Joint grinding system, cement grinding system
Uniting, realization amplitude is biggish again proposes production, and grinding pow consumption reduces again.
Bed of material grinding device has a fatal weakness, either roll squeezer or Vertical Mill compared with ball mill, operation it is steady
It is poorer than ball mill to be formed, and is affected by material, the bed of material, pressure etc., when material feeding is uneven or feeding granularity, moisture content etc.
When improper, bed of material grinding device can vibrate, and influence the stability of system, and system stop jumping is caused when serious, to equipment sheet
Body also generates damaging influence, not only influences the normal production of cement, also reduces the service life of bed-grinding device.
With the development of bed of material grinding technology, the cement combination grinding or half whole powder of bed of material milling equipment and ball mill composition
Grinding system, yield are being continuously improved, and grinding pow consumption is constantly reducing, and especially develop half whole grinding system of popular cement in recent years
System realizes that about 2 times propose production effect on the basis of protocorm grinding machine, and grinding pow consumption is down to 27kWh/t or less.It realizes so big
Amplitude proposes production and consumption reduction, and system stable operation is particularly significant, and the stable operation of especially bed of material milling equipment is more important.Mesh
Preceding half final grinding system of cement using it is more be half final grinding system of roll squeezer, in order to guarantee the stable operation of roll squeezer,
Design has current stabilization storehouse above roll squeezer, to guarantee that the material into roll squeezer realizes uniform feeding, by the position in storehouse in current stabilization storehouse come
It realizes, but when proportioning station supplied materials fluctuates, the powder granularity of roll squeezer can change out, and aidr bells blast system also has little time to adjust
Whole, the circulating load of roller press grinding system has occurred and that variation, loses control of so as to cause current stabilization position in storehouse, roll squeezer throughput
Change therewith, fluctuation occurs so as to cause roll squeezer and even vibrates.
In addition, the powder after bed of material grinding selects powder by V-type powder concentrator, fine powder concentrator in half final grinding system of cement
Afterwards, the fine powder of fine powder concentrator selected is finished cement, and coarse powder or middle coarse powder are fed directly into ball mill, generally pass through blanking chute
Son or skewed slot are directly connected to ball mill bistrique spout.Production, ball mill milling capacity base are significantly mentioned with Ball Mill System
This realization maximizes, once ball mill feeding fluctuates, either open system or closed-circuit system, the grinding in ball mill
Situation fluctuates；When ball mill is open system, when feeding granularity is thicker or feeding capacity becomes larger, the cement fineness that grinds
It can run slightly, to influence the performance of cement；When ball mill is closed-circuit system, when feeding granularity is thicker or feeding capacity becomes larger, meeting
Cause circulating load to change, and then influence to select powder system, causes cement granularity to change respectively with grinding efficiency, also can
Influence cement performance.
It can be seen that the feeding capacity stabilization of control roll squeezer and ball mill is the key that realize half final grinding system high yield low energy consumption.
There is also the same problems for half final grinding system of Vertical Mill, Vertical Mill feeding capacity, thickness of feed layer and the stabilization for grinding interior material size composition,
Key effect is played to the stable operation of Vertical Mill.Only former and later two grindings of system equipment realizes stable operation, and system is
Be able to achieve efficient grinding with it is energy-saving.In order to stablize the charging of two grindings equipment, it is key for carrying out quantitative current stabilization feeding
Technical measures.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of stable, two core powders especially in realization system
Half final grinding system of cement with current stabilization metering device of the stable operation of mill apparatus.
In order to solve the above technical problems, the present invention realizes as follows: designing a kind of with current stabilization metering device
Half final grinding system of cement comprising pre- grinding device, bucket elevator, V-type powder concentrator, fine powder concentrator, dust-precipitator, blower, defeated
Send skewed slot, ball mill, the second conveying skewed slot, it is characterised in that: further include the first current stabilization storehouse, the second current stabilization storehouse, the first current stabilization storehouse
The first weigher is arranged in lower section, and the first weigher is sequentially connected third conveying skewed slot, feed inlet of globe mill, the first current stabilization storehouse middle part
Material overflow port is set, the 4th conveying skewed slot, the second current stabilization storehouse is sequentially connected by overflow port, setting the below the second current stabilization storehouse
Two weighers, the second weigher (15) are connected with pre- grinding device feed inlet.
Pre- grinding device, bucket elevator, V-type powder concentrator, the second current stabilization storehouse, the second weigher form a closed-circuit system；
Pre- grinding device, bucket elevator, V-type powder concentrator, fine powder concentrator, the second current stabilization storehouse, the second weigher form one
Closed-circuit system；Pre- grinding device, bucket elevator, V-type powder concentrator, fine powder concentrator, the first current stabilization storehouse, the 4th conveying skewed slot, second
Current stabilization storehouse, the second weigher form a closed-circuit system.
First current stabilization storehouse consists of two parts, i.e. cylindrical portion and conical section, and cylindrical portion is first steady
Part on storehouse is flowed, conical section is part under current stabilization storehouse, and the first current stabilization storehouse there are two discharge ports, and a discharge port is located at orlop, and one unloads
Material mouth, that is, material overflow port 10-1 is located in the middle part of storehouse.Material in first current stabilization storehouse supplies ball mill first, realizes and stablizes when ball mill
When grinding produces, when can't fall the supplies consumption in the first current stabilization storehouse, the position in storehouse in the first current stabilization storehouse can be stepped up, when upper
When the overflow port being raised in the middle part of current stabilization storehouse, material is delivered to the second current stabilization storehouse by the 4th conveying skewed slot by material, is then led to again
It crosses the second weigher and is delivered to pre- grinding device.
The fine powder concentrator is three composition dividing powder separating machine, and charging air inlet is connected with V-type air outlet of powder concentrator, fine powder discharging
Air outlet is connected with dust-precipitator, and middle coarse powder discharge port is connected with the first current stabilization storehouse, and coarse powder discharge port is connected with the second current stabilization storehouse.V
For the fine powder of type powder concentrator with selecting powder wind to enter fine powder concentrator, material one dividing into three is divided into coarse powder, middle coarse powder, fine powder, coarse powder
Pass sequentially through the second current stabilization storehouse, the second weigher returns to pre- grinding device and carries out circulation grinding, it is steady that middle coarse powder passes sequentially through first
Stream storehouse, the first weigher, third conveying skewed slot enter ball mill and carry out cement grinding preparation.
The pre- grinding device, bucket elevator, V-type powder concentrator, fine powder concentrator, the first current stabilization storehouse, the first weigher, third
Conveying skewed slot, ball mill, the second conveying skewed slot are sequentially connected in series, and coarse powder is returned to pre- grinding device and carries out circulation grinding, does not allow it
Into ball mill, give full play to pre- grinding device coarse grained efficient grinding and ball mill grind fine grained it is respective excellent
Gesture；The fine powder of pre- grinding device is directly selected as finished cement, does not enter back into ball mill, prevents from forming backing strap effect, prevent
Cross grinding phenomenon.
The discharge port of the third conveying skewed slot and the highness change of ball mill import prevent material from scoring within 1 meter
Slug phenomenon occurs when grinding machine, gives full play to each section of abrasive action of ball mill, especially two storehouses mill, once slug occurs, especially
When being compartment Board position of the slug to a storehouse, a storehouse does not work substantially, and whole materials only lean on two storehouses to be ground, ball mill
Abrasive action can weaken.
The positive effect of the present invention: in technical solution of the present invention, give full play to first pre- grinding device efficient grinding and
Ball mill is to the high-efficient grinding function of fine powder, so that the mill efficiency of system is higher, to reduce the grinding energy of system；Its
It is secondary, it is respectively provided with current stabilization storehouse above pre- grinding device, ball mill, so that the feeding of two grinding devices is stablized；Below current stabilization storehouse again
Weigher is set, quantitatively can carry out feeding to two grinding devices, realization is more steadily fed, to realize system
Stable operation can also determine the respective yield (or material handling capacity) of pre- grinding device and ball mill；Again, powder will finely be selected
After machine is connected on V-type powder concentrator, and three separation functions are set as, rationally give full play to the function of two grinding devices, both realized
Bulk and coarse powder material high-efficiency grinding, but in realizing coarse powder ball mill high-efficient grinding, also in advance by the thin of pre- grinding device
Powder is selected as finished product, while improving system throughput, is also reduced the burden of ball mill, is in turn avoided fine powder in ball mill
There is grinding phenomenon and backing strap acts on, and substantially increased the grinding efficiency of ball mill, to further increase system throughput, dropped
Low system grinding energy；Finally, overflow port is arranged at middle part in the first current stabilization storehouse, the primary and secondary that coarse powder shunts in fine powder concentrator is realized
Direction first meets the grinding amount of ball mill, remaining to return again to pre-grinding vertical, realizes ball mill output maximize in this way,
To realize the maximization of system throughput, be beneficial to system mentions production consumption reduction.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, do not pay create laborious under the premise of, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of embodiment of the present invention
Fig. 2 is the structural schematic diagram of embodiment of the present invention
Fig. 3 is the structural schematic diagram of embodiment of the present invention
Fig. 4 is the structural schematic diagram of embodiment of the present invention
Fig. 5 is the structural schematic diagram of embodiment of the present invention
In figure, 1 pre- 2 bucket elevator 3V type powder concentrator of grinding device
Coarse powder discharge port 4-2 coarse powder discharge port in 4 fine powder concentrator 4-1
5 dust-precipitator, 6 blower
7 conveying 8 ball mill 8-1 feed inlet of globe mill of skewed slot
9 second conveying 10 first current stabilization storehouse 10-1 overflow ports of skewed slot
11 first weigher, 12 third conveys skewed slot 13 the 4th and conveys skewed slot
14 second 15 second weigher of current stabilization storehouse, 16 mixing device
Specific embodiment
Understand to make the objectives, technical solutions, and advantages of the present invention clearer, With reference to embodiment and
Attached drawing is described in further details the present invention.Here, exemplary embodiment and its explanation of the invention are for explaining this hair
It is bright but not as a limitation of the invention.
Such as Fig. 1, a kind of half final grinding system of cement with current stabilization metering device, including pre- grinding device 1, bucket elevator 2, V
Type powder concentrator 3, fine powder concentrator 4, dust-precipitator 5, blower 6, conveying skewed slot 7, ball mill 8, second conveys skewed slot 9, further includes the
The first weigher 11 is arranged below first current stabilization storehouse 10 in one current stabilization storehouse 10, the second current stabilization storehouse 14, and the first weigher 11 is sequentially connected
Third conveys skewed slot 12,8 feed inlet 8-1 of ball mill, and material overflow port 10-1 is arranged in the middle part of the first current stabilization storehouse 10, passes through overflow port
10-1 is sequentially connected the 4th conveying skewed slot 13, the second current stabilization storehouse 14, is arranged the second weigher 15 below the second current stabilization storehouse 14, and second
Weigher 15 is connected with pre- 1 feed inlet of grinding device.
Pre- grinding device 1, bucket elevator 2, V-type powder concentrator 3, the second current stabilization storehouse 14, the second weigher 15 composition one are closed circuit
System；Pre- grinding device 1, bucket elevator 2, V-type powder concentrator 3, fine powder concentrator 4, the second current stabilization storehouse 14, the second weigher 15 composition
One closed-circuit system；Pre- grinding device 1, bucket elevator 2, V-type powder concentrator 3, fine powder concentrator 4, the conveying of the first current stabilization storehouse the 10, the 4th
Skewed slot 13, the second current stabilization storehouse 14, the second weigher 15 form a closed-circuit system.
As an improvement of the present invention, the first current stabilization storehouse 10 consists of two parts, cylindrical portion and centrum portion
Point, cylindrical portion is part on the first current stabilization storehouse 10, and pyramidal portion is part under current stabilization storehouse, and there are two dischargings in the first current stabilization storehouse 10
Mouthful, a discharge port is located at orlop, and one discharge port, that is, material overflow port 10-1 is located in the middle part of storehouse.
As an improvement of the present invention, see Fig. 2, fine powder concentrator 4 is three composition dividing powder separating machine, charging air inlet with
3 air outlet of V-type powder concentrator is connected, and fine powder discharging air outlet is connected with dust-precipitator 5, middle coarse powder discharge port 4-1 and the first current stabilization storehouse
(10) it is connected, coarse powder discharge port 4-2 is connected with the second current stabilization storehouse 14.
Material from proportioning station feeds the second current stabilization storehouse 14, and the material in the second current stabilization storehouse 14 passes through the second weigher 15
Pre- grinding device 1 is quantitatively fed, by pre- 1 grinding powdering material of grinding device, V-type is fed using bucket elevator 2 and selects powder
Machine 3, fine powder concentrator 4 carry out series connection twice and select powder；The fine powder of V-type powder concentrator 3 brings fine powder concentrator 4 by wind, and coarse powder enters
Second current stabilization storehouse 14；Fine powder concentrator 4 is the three fine powder concentrators of separation, and fine powder is chosen as finished cement, is denoted as cement products A,
Coarse powder enters the second current stabilization storehouse 14, and middle coarse powder enters the first current stabilization storehouse 10；Material a part in first current stabilization storehouse passes sequentially through
First current stabilization storehouse the 10, the 4th conveys skewed slot 13 and feeds ball mill, is processed into finished cement, is denoted as cement products B, a part of material
Enter pre- grinding device 1 by overflow port 10-1 and carries out circulation grinding.
As another improvement project of the invention, pre- grinding device 1, bucket elevator 2, V-type powder concentrator 3, fine powder concentrator
4, the first current stabilization storehouse 10, the first weigher 11, third conveying skewed slot 12, ball mill 8, second convey skewed slot 9 and are sequentially connected in series, out in advance
The material of grinding device returns to pre- powder after V-type powder concentrator 3 connects with fine powder concentrator 4 and to select powder, by block material and coarse powder
Mill apparatus 1 carries out circulation grinding, it is not allowed to enter ball mill 8, gives full play to the efficient grinding and ball mill 8 of pre- grinding device 1
Grind the respective advantage of fine powder；The fine powder of pre- grinding device 1 is directly selected as finished cement, does not enter back into ball mill 8, prevents from being formed
Backing strap and there is grinding phenomenon.
As another improvement project of the invention, Fig. 3 is seen, third conveys the discharge port of skewed slot 12 and ball mill 8 is fed
The highness change of mouth 8-1 is within 1 meter, i.e., scraper-trough conveyer vertical height shown in black matrix is preferably not more than 1 meter of height in figure, if engineering
In practice more than 1 meter, buffering scraper-trough conveyer is set or takes anti-slug measure, prevent that slug phenomenon occurs when material goal grinding machine 8,
8 each sections of abrasive actions of ball mill, especially two storehouses or three-chamber mill are given full play to, once slug, especially slug occurs to a storehouse
Compartment Board position when, a storehouse does not work substantially, and the abrasive action of ball mill can weaken.
As another improvement project of the invention, Fig. 4 is seen, convey the conveying skewed slot 9 of cement products A and second of skewed slot 7
Cement products B enter powder material mixing device 16 jointly, in mixing device 16 be uniformly mixed, to guarantee mix designs
Cement composition is consistent with final cement composition.
As another kind variation of the invention, such as Fig. 5, the material from proportioning station is sent directly into pre- grinding device 1, carries out
After grinding by bucket elevator 2 feed V-type powder concentrator 3, fine powder concentrator 4, carry out powder select powder to be classified, V-type powder concentrator 3 it is thick
Powder, fine powder concentrator 4 coarse powder enter the second current stabilization storehouse 14, the middle coarse powder of fine powder concentrator 4 passes through 10 flash of the first current stabilization storehouse
Mouth 10-1 enters the second current stabilization storehouse 14, and the mixed material in the second current stabilization storehouse 14 and the material from proportioning station are in pre- grinding device
Converge in 1 and grinding.
Claims (6)
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| CN201510448494.4A CN106694187B (en) | 2015-07-27 | 2015-07-27 | Cement semi-final grinding system with constant flow metering device |
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| CN201510448494.4A CN106694187B (en) | 2015-07-27 | 2015-07-27 | Cement semi-final grinding system with constant flow metering device |
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| CN106694187B true CN106694187B (en) | 2019-02-05 |
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| 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 |
| CN108160292B (en) * | 2017-12-28 | 2024-11-26 | 宜宾市天顺建材集团股份有限公司 | Grinding device and grinding method |
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| CN112473995B (en) * | 2020-11-30 | 2024-05-28 | 中材国际智能科技有限公司 | Improved raw material roller press final grinding system and process flow thereof |
| CN113457816B (en) * | 2021-07-01 | 2022-08-19 | 厦门艾思欧标准砂有限公司 | System and process for preparing spheroidized powder by adopting vertical grinding machine |
| CN115739357A (en) * | 2022-11-15 | 2023-03-07 | 成都利君实业股份有限公司 | Cement double-circle flow grinding structure, system and method |
| WO2025232055A1 (en) * | 2024-05-08 | 2025-11-13 | 天津水泥工业设计研究院有限公司 | System and process for preparing low-carbon cement by grading and respectively grinding |
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