CN104211312B - A kind of cement outer circulation Vertical Mill half final grinding system - Google Patents
A kind of cement outer circulation Vertical Mill half final grinding system Download PDFInfo
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- CN104211312B CN104211312B CN201410481631.XA CN201410481631A CN104211312B CN 104211312 B CN104211312 B CN 104211312B CN 201410481631 A CN201410481631 A CN 201410481631A CN 104211312 B CN104211312 B CN 104211312B
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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 cement outer circulation Vertical Mill half final grinding system, comprise belt feeder, magnetic separator, metal detector, triple valve, Vertical Mill, bucket elevator, powder concentrator, Vertical Mill, dust-precipitator, blower fan, tube mill, skewed slot, Vertical Mill is outer circulation Vertical Mill, described outer circulation Vertical Mill is interior without built-in powder concentrator, powder concentrator is in series by meal V-type powder concentrator and meticulous powder concentrator, and the fine powder that V-type powder concentrator is selected enters meticulous powder concentrator and again selects powder; The fine powder that meticulous powder concentrator is selected is as cement products A, collects through dust-precipitator, blower fan, and isolated meal divides two-way, and a road enters tube mill, and the Vertical Mill grinding that circulates is returned on a road; The powder that enters tube mill is made cement products B by Tube Mill. The high-efficient grinding function of efficiency crushing, grinding function and the tube mill that the present invention gives full play to Vertical Mill to fine powder, makes the mill efficiency of system higher, thereby reduces the grinding energy of system.
Description
Technical field
The present invention relates to a kind of cement grinding system, relate in particular to a kind of cement outer circulation Vertical Mill half final grinding system.
Background technology
In cement grinding field, tube mill due to capacity usage ratio and mill efficiency low, aspect energy-conservation grinding progressively by efficientlyMilling equipment replaces. Vertical Mill is a kind of bed of material milling equipment, and mill efficiency is higher. Vertical Mill final grinding system is at cement slurry grindingUse in a large number with pulverized coal preparation aspect, aspect cement grinding, also have many cases, the whole grinding of Vertical Mill that fears are entertained that in the pastCement prepared by system needs that water-based is high, pattern sphericity is low and the unfavorable performance such as distribution of particles is too concentrated, progressively by cement work personOverthrow with practice, the cement grinding with Vertical Mill final grinding system is needing the aspects such as water-based, intensity and concrete adaptability and pipe millThe cement difference that machine grinds is progressively dwindled, very approaching through the cement that rationally selects cement prepared by the Vertical Mill of powder and tube mill to grind.
The energy conservation characteristic of Vertical Mill final grinding system by people cognition, but feeding Vertical Mill material powder amount excessive, Vertical Mill holdEasily vibration, the bed of material is also bad stable, and specific area is powder between 220-320m2/kg, generally can't serve as cement products,Vertical Mill final grinding system need to continue circulation grinding by these thinner powders, and the stability of Vertical Mill is had a significant impact, also can shadowRing the mill efficiency of material. At present, circulation Vertical Mill final grinding system has many application cases, and grinding system power consumption is at 28-32kWh/tIn the majority, similar with the Roller Press Combined Grinding System power consumption that application is more, save power consumption not obvious.
Powder concentrator is placed in outside Vertical Mill, and the powder after vertical mill grinding promotes feeding powder concentrator by gravity, whole compared with high-dragRely on the built-in vertical mill system of powder concentrator of wind-power lifting fine powder more to economize on electricity. But there is equally powder between 250-320m2/kgAffect Vertical Mill stable operation. Although the mill efficiency of tube mill is lower, particularly the fragmentation of tube mill and corase grind efficiency are lower, IThe outer circulation cement vertical mill pregrinding system power consumption developed accomplished below 28kWh/t, illustrate that tube mill is for specific areaPowder grinding efficiency more than 220m2/kg is still higher. Make full use of efficiency crushing, the grinding of Vertical Mill, utilize tube millEfficient fine powder grind, form outer circulation Vertical Mill half final grinding system, the specific area 320m2/kg that outer circulation Vertical Mill is ground withUpper cement powder is directly elected cement products as, by the powder feeding tube mill between specific area 220-320m2/kg, by specific surfaceMaterial below long-pending 220m2/kg returns to the Vertical Mill grinding that circulates, and has both brought into play efficiency crushing, the grinding of Vertical Mill, has brought into play againThe high-efficient grinding of tube mill is also beneficial to the stable operation of Vertical Mill.
Summary of the invention
The invention provides for above problem the cement outer circulation Vertical Mill half whole grinding that a kind of mill efficiency is higher, grinding energy is lowSystem.
To the invention provides a kind of cement outer circulation Vertical Mill half final grinding system in order overcoming the above problems, to comprise belt feeder, metalSurvey meter, triple valve, Vertical Mill, bucket elevator, dust-precipitator, blower fan, skewed slot I, tube mill, skewed slot II, is characterized in that: alsoComprise the powder selection device being placed in outside Vertical Mill, powder selection device is in series by V-type powder concentrator and meticulous powder concentrator, V-type powder concentratorFine powder enter meticulous powder concentrator, meal returns to Vertical Mill; The fine powder of meticulous powder concentrator is elected finished cement A, meticulous powder concentrator asMeal divides two-way, and Vertical Mill is returned on a road, and another road enters tube mill and ground as finished cement B;
Vertical Mill, bucket elevator, V-type powder concentrator are connected successively, form a circulatory system; Vertical Mill, bucket elevator, V-type powder concentrator,Meticulous powder concentrator is connected successively, forms a circulatory system; Vertical Mill, bucket elevator, V-type powder concentrator, meticulous powder concentrator, pipe millMachine, skewed slot II are connected successively, form the preparation system of finished cement B; Vertical Mill, bucket elevator, V-type powder concentrator, the meticulous powder that selectsMachine, skewed slot I are connected successively, form the preparation system of finished cement A.
Material from proportioning station feeds outer circulation Vertical Mill through belt feeder, grinds through Vertical Mill, goes out Vertical Mill granular material through bucketCarry machine feeding V-type powder concentrator, roughly select through V-type powder concentrator, enter meticulous powder concentrator compared with fine powder body, meal returns to outer followingRing Vertical Mill; V-type powder concentrator select powder compared with fine powder body through meticulous powder concentrator, the more fine powder body of selecting is as cement products A, partially thickPowder enters tube mill to carry out grinding and obtains finished cement B. The meal of meticulous powder concentrator divides two-way, according to the grinding energy of tube millPower, regulates into tube mill and the ratio of returning to Vertical Mill.
As a modification of the present invention, below the meal blanking scraper-trough conveyer of meticulous powder concentrator, T-piece splitting valve is set, threeway sub-materialTwo discharge opening pipelines of valve connect respectively Vertical Mill and tube mill. The described isolated meal of meticulous powder concentrator is by threeway sub-materialMaterial is divided into two-way by valve, regulates T-piece splitting valve, regulates into Vertical Mill and the inventory that enters tube mill, and two-way material is regulated to ratioExample is controlled as 0-100%, and the arbitrary proportion of realizing two-way material regulates.
As another kind of improvement of the present invention, the finished cement A that described meticulous powder concentrator is selected carries by skewed slot I, described inThe finished cement B that grinds of tube mill carry by skewed slot II, two skewed slot finished cements are mixed into and enter cement after blended cement and storeStorehouse, makes up mutually with the distribution of particles and the pattern that regulate cement, carrys out ready-made well behaved blended cement.
As another kind of improvement of the present invention, the dust-collection air pipe of described Vertical Mill is connected with the outlet airduct of V-type powder concentrator, Vertical MillUnder micro-negative pressure, work, avoid dust in Vertical Mill to emit outward, heat when postscript, grinding being produced is taken Vertical Mill out of, extends Vertical Mill and grindsThe service life of parts.
Beneficial effect:
1, the high-efficient grinding function of efficiency crushing, grinding function and the tube mill of giving full play to Vertical Mill to fine powder, makes the powder of systemMill efficiency is higher, thereby reduces the grinding energy of system.
2, powder concentrator is placed in outside Vertical Mill, reduces the resistance of Vertical Mill own, by fine powder grinding in tube mill, make Vertical Mill operationMore stable.
3, V-type powder concentrator is connected with meticulous powder concentrator, carry out meal and fine powder select powder to separate to carry out, select powder effect thereby improveRate, and then effectively avoid powder to occur grinding.
4, the finished cement B that the finished cement A that Vertical Mill grinds grinds with tube mill mixes, and carries out cement grating and granulatedLooks are carried out reasonably combined, thereby ensure that cement performance is good.
Brief description of the drawings
Fig. 1 is process chart of the present invention.
Fig. 2 is a kind of improved process chart of the present invention.
1 is belt feeder, and 2 is metal detector, and 3 is triple valve, and 4 is Vertical Mill, and 5 is bucket elevator, and 6 is V-type powder concentrator, 7For meticulous powder concentrator, 8 is dust-precipitator, and 9 is blower fan, and 10 is skewed slot I, and 11 is tube mill, and 12 is T-piece splitting valve, and 13 areSkewed slot II.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, 2, the invention provides a kind of cement outer circulation Vertical Mill half final grinding system, comprise belt feeder 1, metalSurvey meter 2, triple valve 3, Vertical Mill 4, bucket elevator 5, dust-precipitator 8, blower fan 9, skewed slot I10, tube mill 11, skewed slot II13, powder selection device, powder selection device is placed in outside Vertical Mill 4, powder selection device connected by V-type powder concentrator 6 and meticulous powder concentrator 7 andBecome, the fine powder of V-type powder concentrator 6 enters meticulous powder concentrator 7, and meal returns to Vertical Mill 4; The fine powder of meticulous powder concentrator 7 is elected cement asFinished product A, the meal of meticulous powder concentrator 7 divides two-way, and Vertical Mill 4 is returned on a road, and another road enters tube mill 11 and is ground as cementFinished product B;
Vertical Mill 4, bucket elevator 5, V-type powder concentrator 6 are connected successively, form a circulatory system; Vertical Mill 4, bucket elevator 5, V-typePowder concentrator 6, meticulous powder concentrator 7 are connected successively, form a circulatory system; Vertical Mill 4, bucket elevator 5, V-type powder concentrator 6,Meticulous powder concentrator 7, tube mill 11, skewed slot II13 are connected successively, form the preparation system of finished cement B; Vertical Mill 4, bucket are carriedMachine 5, V-type powder concentrator 6, meticulous powder concentrator 7, skewed slot I10 are connected successively, form the preparation system of finished cement A.
As a modification of the present invention scheme, as shown in Figure 2, below the meal blanking scraper-trough conveyer of meticulous powder concentrator 7, be provided with threeLogical material distributing valve 12, two discharge opening pipelines of T-piece splitting valve 12 connect respectively Vertical Mill 4 and tube mill 11.
As another kind of improvement project of the present invention, as shown in Figure 2, the finished cement A that described meticulous powder concentrator 7 is selected is logicalCross skewed slot I10 and carry, the finished cement B that tube mill 11 grinds carries by skewed slot II13, and two skewed slot finished cements are mixed intoAfter blended cement, enter cement storage warehouse.
As a modification of the present invention scheme, as shown in Figure 2, the dust-collection air pipe of described Vertical Mill 4 and V-type powder concentrator 6Outlet airduct is connected.
The foregoing is only the preferred embodiments of the present invention, be not restricted to the present invention, come for those skilled in the artSay, the present invention can have various modifications and variations. Within the spirit and principles in the present invention all, any amendment of doing, be equal toReplacement, improvement etc., within all should being included in claim scope of the present invention.
Claims (3)
1. cement outer circulation Vertical Mill half final grinding system, comprise belt feeder (1), metal detector (2), triple valve (3), Vertical Mill (4), bucket elevator (5), dust-precipitator (8), blower fan (9), skewed slot I (10), tube mill (11), skewed slot II (13), it is characterized in that: also comprise the powder selection device being placed in outside Vertical Mill (4), powder selection device is in series by V-type powder concentrator (6) and meticulous powder concentrator (7), the fine powder of V-type powder concentrator (6) enters meticulous powder concentrator (7), meal returns to Vertical Mill (4), the fine powder of meticulous powder concentrator (7) is elected finished cement A as, and the meal of meticulous powder concentrator (7) divides two-way, and Vertical Mill (4) is returned on a road, and another road enters tube mill (11) and ground as finished cement B,
Vertical Mill (4), bucket elevator (5), V-type powder concentrator (6) are connected successively, form a circulatory system; Vertical Mill (4), bucket elevator (5), V-type powder concentrator (6), meticulous powder concentrator (7) are connected successively, form a circulatory system; Vertical Mill (4), bucket elevator (5), V-type powder concentrator (6), meticulous powder concentrator (7), tube mill (11), skewed slot II (13) are connected successively, form the preparation system of finished cement B; Vertical Mill (4), bucket elevator (5), V-type powder concentrator (6), meticulous powder concentrator (7), skewed slot I (10) are connected successively, form the preparation system of finished cement A;
Material from proportioning station feeds outer circulation Vertical Mill (4) through belt feeder (1), through the grinding of outer circulation Vertical Mill, go out Vertical Mill granular material through bucket elevator (5) feeding V-type powder concentrator (6), roughly select through V-type powder concentrator (6), enter meticulous powder concentrator (7) compared with fine powder body, meal returns to outer circulation Vertical Mill (4); V-type powder concentrator (6) select powder compared with fine powder body through meticulous powder concentrator (7), the more fine powder body of selecting is as cement products A, coarse dispersion enters tube mill (11) and carries out grinding and obtain finished cement B partially;
Meal blanking scraper-trough conveyer below at meticulous powder concentrator (7) is provided with T-piece splitting valve (12), and two discharge opening pipelines of T-piece splitting valve (12) connect respectively Vertical Mill (4) and tube mill (11).
2. a kind of cement outer circulation Vertical Mill according to claim 1 half final grinding system, it is characterized in that: the finished cement A that described meticulous powder concentrator (7) is selected carries by skewed slot I (10), the finished cement B that tube mill (11) grinds carries by skewed slot II (13), after two skewed slot finished cements are mixed into blended cement, enters cement storage warehouse.
3. a kind of cement outer circulation Vertical Mill according to claim 1 half final grinding system, is characterized in that: the dust-collection air pipe of described Vertical Mill (4) is connected with the outlet airduct of V-type powder concentrator (6).
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| CN201410481631.XA CN104211312B (en) | 2014-09-19 | 2014-09-19 | A kind of cement outer circulation Vertical Mill half final grinding system |
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| CN201410481631.XA CN104211312B (en) | 2014-09-19 | 2014-09-19 | A kind of cement outer circulation Vertical Mill half final grinding system |
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| CN104211312A CN104211312A (en) | 2014-12-17 |
| CN104211312B true CN104211312B (en) | 2016-05-25 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396442B (en) * | 2015-07-27 | 2018-10-23 | 南京凯盛国际工程有限公司 | Cement grinding and metering process |
| CN107552199A (en) * | 2016-07-01 | 2018-01-09 | 南京凯盛国际工程有限公司 | Outer circulation vertical mill grinding process system |
| CN108787049B (en) * | 2017-05-04 | 2023-11-21 | 上海熠炎自动化科技有限公司 | cement grinding system |
| CN108373280B (en) * | 2018-01-30 | 2020-08-18 | 天津水泥工业设计研究院有限公司 | Process for recycling waste concrete aggregate and cementing material |
| CN108355968B (en) * | 2018-04-24 | 2024-04-05 | 中材国际智能科技有限公司 | Dry sand making system and method |
| CN110523501A (en) * | 2018-05-25 | 2019-12-03 | 合肥中亚建材装备有限责任公司 | A kind of full outer circulation raw material vertical mill mill is outer to select powder grinding process system |
| CN113976277B (en) * | 2021-10-18 | 2023-01-31 | 天津水泥工业设计研究院有限公司 | Cement external circulation vertical mill combined high-performance grinding process system |
| CN115254374B (en) * | 2022-06-30 | 2023-08-15 | 徐州桐圣建材有限公司 | Can increase grinding efficiency's of cement raw materials vertical mill device for cement processing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101596483B (en) * | 2009-06-26 | 2011-08-03 | 南京凯盛国际工程有限公司 | Material grinding system |
| CN201415147Y (en) * | 2009-06-26 | 2010-03-03 | 南京凯盛水泥技术工程有限公司 | Material grinding system |
| CN103342482B (en) * | 2013-07-30 | 2014-10-15 | 南京凯盛国际工程有限公司 | External-circulation cement finish grinding system for vertical mill |
| CN203360283U (en) * | 2013-07-30 | 2013-12-25 | 南京凯盛国际工程有限公司 | Outer circulation final grinding system of cement vertical mill |
| CN204058266U (en) * | 2014-09-19 | 2014-12-31 | 南京凯盛国际工程有限公司 | A kind of cement outer circulation Vertical Mill half final grinding system |
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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. |