CN106396442B - Cement grinding and metering process - Google Patents
Cement grinding and metering process Download PDFInfo
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- CN106396442B CN106396442B CN201510447702.9A CN201510447702A CN106396442B CN 106396442 B CN106396442 B CN 106396442B CN 201510447702 A CN201510447702 A CN 201510447702A CN 106396442 B CN106396442 B CN 106396442B
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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 system of cement, especially a kind of cement grinding and metering process；Cement raw material is made of clinker, gypsum, mixing material A, mixing material B, each raw material is conveyed after burden balance A, burden balance B, burden balance C, burden balance D meterings and is met on proportioning belt respectively, it is re-fed into current stabilization storehouse A, feeds pre- grinding device by weigher A, then be sent into and select powder system A；Lump material, coarse powder are sent into current stabilization storehouse A；Middle coarse powder is sent into current stabilization storehouse B, and fine powder is sent into material homogenizer.Current stabilization storehouse B divides middle coarse powder to two-way；Into tube mill middle coarse powder after grinding, feeding select powder system B；Powder after selecting powder system B to grind tube mill is divided into two parts；The present invention, which had both realized, fully proposes production and energy-saving, and makes system stable operation, and can determine that pre- grinding device and the tube mill cement output that respectively grinding goes out, clearly technology path is provided for half final grinding system of follow-up study cement.
Description
Technical field
The present invention relates to a kind of half final grinding systems of cement, especially cement grinding and metering process.
Background technology
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, on the basis of tube mill, realization significantly carry production with it is energy saving.Especially
It is that in recent years, the country has started half whole grinding agitation of one cement, on the basis of cement pre-grinding system, cement grinding system
Again realize by a relatively large margin propose production, grinding pow consumption reduces again.
Bed of material grinding device has a fatal weakness, either roll squeezer or Vertical Mill compared with tube mill, operation it is steady
It is qualitative poorer than tube mill, it 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 easily vibrates, and influences 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, bed of material milling equipment and the cement combination grinding of tube mill composition or half whole powder
Grinding system, yield are being continuously improved, and grinding pow consumption is constantly reducing, and especially develop half popular final grinding system in recent years,
Realize that about B times puies forward production effect on the basis of former tube mill, grinding pow consumption is down to 27kWh/t or less.It realizes so substantially
Degree 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.
Production is significantly proposed with tube mill system, tube mill milling capacity realizes maximization substantially, in tube mill high yield
When preparing cement, once tube mill feeding fluctuates, either open system or closed-circuit system, the grinding shape in tube mill
Condition fluctuates, and then the performance that can influence cement changes.
As it can be seen that the stabilization feeding for controlling pre- grinding device and tube mill is to realize that half final grinding system high yield low energy consumption is closed
Key.
Invention content
Technical problem to be solved by the invention is to provide a kind of stable operation for realizing cement grinding system with efficiently it is low
The cement grinding and metering process of stable operation prepared by energy consumption.
In order to solve the above technical problems, the present invention realizes as follows：Design a kind of cement grinding and metering work
Skill comprising following steps：
The first step：Cement raw material is made of clinker, gypsum, mixing material A, mixing material B, is separately stored in repository A, storage
In library B, repository C, repository D, each raw material conveys after burden balance A, burden balance B, burden balance C, burden balance D meterings respectively
And it meets on proportioning belt.
Second step：Mixed material on proportioning belt is sent into current stabilization storehouse A, and pre- grinding device is fed using weigher A.
Third walks：Mixed material is after pre- grinding device grinding, and powder system A is selected in feeding, and it is four that material one, which is divided,：It is blocky
Material, coarse powder, middle coarse powder, fine powder A.
4th step：Lump material, coarse powder are sent into current stabilization storehouse A, are converged in the A of current stabilization storehouse with the fresh material from proportioning belt
It closes；Middle coarse powder is sent into current stabilization storehouse B, and fine powder A is sent into material homogenizer.
5th step：Current stabilization storehouse B divides middle coarse powder to two-way, enters tube mill by weigher B all the way, returns to current stabilization storehouse all the way
A。
6th step：Into tube mill middle coarse powder after grinding, feeding select powder system B.
7th step：Powder after selecting powder system B to grind tube mill is divided into two parts, i.e. fine powder B and coarse powder B, fine powder B are sent
Enter material homogenizer, coarse powder B returns to tube mill and carries out circular grinding.
8th step：Fine powder A is mixed with fine powder B in material homogenizer, and uniformly mixed finished cement is prepared.
Current stabilization storehouse A and weigher A are set before the pre- grinding device, setting current stabilization storehouse B and weigher B before tube mill, two
Kind grinding device, which is realized, stablizes feeding.It is four piece-rate system of combined type to select powder system A, the powder point after pre- grinding device grinding
For lump material, coarse powder, middle coarse powder, fine powder A, lump material, coarse powder return to pregrinding system and carry out cycle grinding, middle coarse powder into
Enter tube mill system, carry out cement grinding, fine powder A is directly selected as finished cement.
The weigher A is current stabilization belt conveyer scale, and weigher B is powder metering meter or powder flow gauge, measures pre- powder respectively
The material handling capacity of mill apparatus and the material handling capacity of tube mill, so aid in determining whether the acting contributions of two grinding devices with
Energy consumption size.
Described select sets gradually current stabilization storehouse C and weigher C between powder system B and tube mill, it may be determined that return to tube mill
The circulating load size of inventory and tube mill system.
Buffer unit is arranged between powder system B and tube mill in described select so that all materials into tube mill are realized steady
Surely enter tube mill without slug occurs, and then tube mill operation is made more to stablize and grind more efficient.
It is described to add to set mixing material repository and burden balance when mixing material type >=C kinds, so that each mixing material is distinguished
A corresponding repository, each repository lower section add a burden balance respectively.When species of gypsum is two kinds, stone is equally added
Cream repository makes each gypsum respectively be stored in a repository, and accordingly burden balance are added below gypsum repository.
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
Tube mill improves cement grinding efficiency to the high-efficient grinding function of fine powder, and energy consumption is prepared to reduce cement；Secondly pre- grinding
It is respectively provided with current stabilization storehouse before device, tube mill charging so that the feeding of two grinding devices is stablized；Weigher, Ke Yishi are set again
The effect of now quantifying feeding, not only helping system stabilization, be additionally beneficial to determine two kinds of grinding devices size.
Description of the drawings
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 technology 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
Obtain other attached drawings according to these attached 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
Specific implementation mode
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, the exemplary embodiment and its explanation of the present invention are for explaining this hair
It is bright but not as a limitation of the invention.
Such as Fig. 1, the present invention provides a kind of cement grinding and metering process, include the following steps：
The first step：Cement raw material is made of clinker, gypsum, mixing material A, mixing material B, is separately stored in repository A, storage
In library B, repository C, repository D, each raw material conveys after burden balance A, burden balance B, burden balance C, burden balance D meterings respectively
And it meets on proportioning belt.
Second step：Mixed material on proportioning belt is sent into current stabilization storehouse A, and pre- grinding device is fed using weigher A.
Third walks：Mixed material is after pre- grinding device grinding, and powder system A is selected in feeding, and it is four that material one, which is divided,：It is blocky
Material, coarse powder, middle coarse powder, fine powder A.
4th step：Lump material, coarse powder are sent into current stabilization storehouse A, are converged in the A of current stabilization storehouse with the fresh material from proportioning belt
It closes；Middle coarse powder is sent into current stabilization storehouse B, and fine powder A is sent into material homogenizer.
5th step：Current stabilization storehouse B divides middle coarse powder to two-way, enters tube mill by weigher B all the way, returns to current stabilization storehouse all the way
A。
6th step：After the middle coarse powder for entering tube mill is ground by tube mill, feeding selects powder system B.
7th step：Powder after selecting powder system B to grind tube mill is divided into two parts, i.e. fine powder B and coarse powder B, fine powder B are sent
Enter material homogenizer, coarse powder B returns to tube mill and carries out circular grinding.
8th step：Fine powder A is mixed with fine powder B in material homogenizer, and uniformly mixed finished cement is prepared.
As the preferred embodiment of the present invention, current stabilization storehouse A and weigher A are set before pre- grinding device, are arranged before tube mill
Current stabilization storehouse B and weigher B, two kinds of grinding devices, which are realized, stablizes feeding.It is four piece-rate system of combined type, pre- powder to select powder system A
Powder after mill apparatus grinding is divided into lump material, coarse powder, middle coarse powder, fine powder A, and lump material, coarse powder return to pregrinding system
Cycle grinding is carried out, middle coarse powder enters tube mill system, carries out cement grinding, and fine powder A is directly selected as finished cement.Select powder system
A is four piece-rate system of combined type, and the powder after pre- grinding device grinding is divided into lump material, coarse powder, middle coarse powder, fine powder A, blocky
Material, coarse powder return to pregrinding system and carry out cycle grinding, and middle coarse powder enters tube mill system and is ground into finished cement, fine powder A
Directly it is selected as finished cement.
Scheme as an improvement of the present invention, weigher A are current stabilization belt conveyer scale, and weigher B is powder metering meter or powder
Flowmeter body, measures the material handling capacity of pre- grinding device and the material handling capacity of tube mill respectively, and pre- grinding device passes through
Amount measured by current stabilization belt conveyer scale, the yield of tube mill is measured by powder metering meter or flowmeter, further according to
Expect that the metering summation of scale deducts the yield of tube mill, the finished cement amount that pre- grinding device directly grinds and selects, energy can be found out
The effect of reaching Instructing manufacture well, also allowing for research both front and back grinding device size.
As another improvement project of the present invention, such as Fig. 2 sets gradually current stabilization storehouse C and weigher C before tube mill, returns
The inventory of return pipe grinding machine is measured by weigher, and tube mill system circulation load is easily found out according to ball mill output
Size calculates circulating load without taking powder to carry out size distribution again, and is difficult to get representative powder when system operation
Material, the circulating load calculated by weigher are more accurate than the circulating load that sampling analysis obtains.
As a kind of variation of embodiment of the present invention, selects and buffer unit is set between powder system B and tube mill so that
All materials into tube mill, which are realized to stablize, enters tube mill, and slug occurs for the material for avoiding enter into tube mill, and then makes pipe
Each grinding section of grinding machine plays preferably grinding effect, and grinding effect is more superior.
As a kind of variation of embodiment of the present invention, such as Fig. 3, fresh material is directly fed pre- grinding by proportioning belt
Device, the thruput of pre- grinding device are the variable that the sum of burden balance metering material is shown along with weigher A.
As being further change in for the present invention, when mixing material type >=C kinds, to add to set mixing material repository and dispensing
Scale makes each mixing material correspond to a repository respectively, a burden balance is added respectively below each repository；Work as species of gypsum
When being two kinds, gypsum repository is equally added, each gypsum is made respectively to be stored in a repository, phase below gypsum repository
Burden balance should be added.The embodiment adapt to a variety of gypsum, a variety of mixing materials cement ingredient situation, be particularly suitable for grinding multiple
Cement.Such as Fig. 4, mixing material is C kinds, adds the corresponding repository E of mixing material C and burden balance E, cement raw material is by clinker, stone
Cream, mixing material A, mixing material B, mixing material C compositions, are separately stored in repository A, repository B, repository C, repository D, storage
In the E of library, each raw material is conveyed and is met at after burden balance A, burden balance B, burden balance C, burden balance D, burden balance E meterings respectively
On proportioning belt, other same preferred embodiments of implementation steps.
Further scheme as the present invention changes, which can be with separate grinding clinker or mixing material.
Claims (1)
1. cement grinding and metering process, it is characterised in that include the following steps：
The first step：Cement raw material is made of clinker, gypsum, mixing material A, mixing material B, be separately stored in repository A, repository B,
In repository C, repository D, each raw material is conveyed and is converged after burden balance A, burden balance B, burden balance C, burden balance D meterings respectively
Together on proportioning belt；
Second step：Mixed material on proportioning belt is sent into current stabilization storehouse A, and pre- grinding device is fed using weigher A；
Third walks：Mixed material is after pre- grinding device grinding, and powder system A is selected in feeding, and it is four that material one, which is divided,：Block
Material, coarse powder, middle coarse powder, fine powder A；
4th step：Lump material, coarse powder are sent into current stabilization storehouse A, converge in the A of current stabilization storehouse with the fresh material from proportioning belt；In
Coarse powder is sent into current stabilization storehouse B, and fine powder is sent into material homogenizer；
5th step：Current stabilization storehouse B divides middle coarse powder to two-way, enters tube mill by weigher B all the way, returns to current stabilization storehouse A all the way；
6th step：Into tube mill middle coarse powder after grinding, feeding select powder system B；
7th step：Powder after selecting powder system B to grind tube mill is divided into two parts, i.e. fine powder B and coarse powder B, and fine powder B is sent into equal
Material machine, coarse powder B return to tube mill and carry out circular grinding；
8th step：Fine powder A is mixed with fine powder B in material homogenizer, and uniformly mixed finished cement is prepared；
It is described to select powder system A for four piece-rate system of combined type；Weigher A is current stabilization belt conveyer scale；Weigher B be powder metering meter or
Powder flow gauge；It selects and sets gradually current stabilization storehouse C and weigher C between powder system B and tube mill；Select powder system B and tube mill it
Between buffer unit is set；Mixing material type >=C kinds, each mixing material correspond to a repository, divide below each repository respectively
A burden balance are not added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510447702.9A CN106396442B (en) | 2015-07-27 | 2015-07-27 | Cement grinding and metering process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510447702.9A CN106396442B (en) | 2015-07-27 | 2015-07-27 | Cement grinding and metering process |
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| Publication Number | Publication Date |
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| CN106396442A CN106396442A (en) | 2017-02-15 |
| CN106396442B true CN106396442B (en) | 2018-10-23 |
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| CN201510447702.9A Active CN106396442B (en) | 2015-07-27 | 2015-07-27 | Cement grinding and metering process |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109867461B (en) * | 2019-04-02 | 2021-11-26 | 中材海外工程有限公司 | Cement raw material preparation system |
| CN110328036A (en) * | 2019-07-10 | 2019-10-15 | 南通万豪建材科技有限公司 | A kind of environment protecting cement production line and its production technology |
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|---|---|---|---|---|
| CN102179285A (en) * | 2011-03-02 | 2011-09-14 | 江苏羚羊水泥工程技术有限公司 | Single-compartment ball mill type cement vertical mill grinding device |
| CN102323751A (en) * | 2011-06-28 | 2012-01-18 | 浙江大学 | Preparatory grinding system control method based on fuzzy intelligence control and optimization method |
| CN103342482A (en) * | 2013-07-30 | 2013-10-09 | 南京凯盛国际工程有限公司 | External-circulation cement finish grinding system for vertical mill |
| CN203389731U (en) * | 2013-07-30 | 2014-01-15 | 南京凯盛国际工程有限公司 | Cement preparation system |
| CN104211312A (en) * | 2014-09-19 | 2014-12-17 | 南京凯盛国际工程有限公司 | Cement outer-circulating semi-finish grinding system of vertical mill |
-
2015
- 2015-07-27 CN CN201510447702.9A patent/CN106396442B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179285A (en) * | 2011-03-02 | 2011-09-14 | 江苏羚羊水泥工程技术有限公司 | Single-compartment ball mill type cement vertical mill grinding device |
| CN102323751A (en) * | 2011-06-28 | 2012-01-18 | 浙江大学 | Preparatory grinding system control method based on fuzzy intelligence control and optimization method |
| CN103342482A (en) * | 2013-07-30 | 2013-10-09 | 南京凯盛国际工程有限公司 | External-circulation cement finish grinding system for vertical mill |
| CN203389731U (en) * | 2013-07-30 | 2014-01-15 | 南京凯盛国际工程有限公司 | Cement preparation system |
| CN104211312A (en) * | 2014-09-19 | 2014-12-17 | 南京凯盛国际工程有限公司 | Cement outer-circulating semi-finish grinding system of vertical mill |
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| CN106396442A (en) | 2017-02-15 |
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Address after: 303 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee after: Zhongcai International Intelligent Technology Co.,Ltd. Address before: 303 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee before: NANJING KISEN INTERNATIONAL ENGINEERING Co.,Ltd. |
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