EP3154701A1 - Mahlanlage und verfahren zur zerkleinerung von mahlgut - Google Patents
Mahlanlage und verfahren zur zerkleinerung von mahlgutInfo
- Publication number
- EP3154701A1 EP3154701A1 EP15726988.7A EP15726988A EP3154701A1 EP 3154701 A1 EP3154701 A1 EP 3154701A1 EP 15726988 A EP15726988 A EP 15726988A EP 3154701 A1 EP3154701 A1 EP 3154701A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- classifier
- dynamic
- grinding
- static
- roller press
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Definitions
- the invention relates to a grinding plant and a method for comminuting grinding stock with a first grinding circuit having a roller press and a first classifier and a second grinding circuit having a dynamic classifier and a ball mill.
- the grinding stock used in comminution preferably consists of a brittle material, such as limestone, dolomite or ore material.
- the ground material moreover consists preferably of clinker, slag and / or fly ash.
- DE 43 03 987 AI is a grinding plant with a first and a second
- the first grinding circuit is operated with a high-pressure roller press and a dynamic classifier arranged above.
- the fines of the first grinding cycle pass into a cyclone and from there into a ball mill.
- the ground in the ball mill estate is separated in a second dynamic classifier in finished goods and grits, the griesÜ
- High-pressure roller presses usually have two rollers driven in opposite directions and forming a grinding gap between them, which rollers are subjected to grinding pressures of 50 MPa and more by means of a pressing device. Such high pressures lead in the grinding gap to a so-called
- roller press the disagglomerator is replaced by a static classifier.
- a delivery unit in particular a bucket elevator used, which is adapted to the amount to be transported and causes considerable investment and operating costs.
- EP 1 506 058 B1 it is the object of the invention to provide a compact circuit grinding plant with roller press and classifier, in which the problem of mechanical transport of the circulated ground material is minimized.
- the solution to this problem was that a static cascade classifier was placed below the nip of the roller press, while a dynamic Nachsichter was provided with its Grobgutauslass above the roller press.
- the static cascade classifier has mainly the task of disagglomerating the agglomerates and to view the material to be viewed simultaneously in cross-flow.
- the visible goods discharge of the static cascade classifier arrives pneumatically via a riser channel with the classifying air into the Nachsichter.
- the invention is therefore based on the object of specifying a grinding plant and a method for the comminution of regrind with a first and a second grinding circuit, which are characterized by reduced investment and operating costs.
- the grinding system according to the invention for the comminution of ground material consists essentially of a first grinding circuit having a roller press and a first classifier and a second grinding circuit having a dynamic classifier and a ball mill.
- the first classifier is designed as a static classifier and arranged below the roller press, while the dynamic classifier is provided at the level of the roller press or below the roller press.
- the millbase is comminuted in a first mill cycle comprising a roller press and a first classifier and a second mill cycle having a dynamic classifier and a ball mill, wherein a first classifier designed as a static classifier and arranged below the roller compactor and one on Height of the roller press or below the roller press arranged dynamic classifier are used.
- a roller mill Under a roller press in the context of the invention, a roller mill with two counter-driven and while maintaining a grinding gap pressed against each other grinding rollers understood.
- the static sifter In contrast to the dynamic sifter, the static sifter is distinguished above all by the fact that it has no rotating or rotating components during operation. Usually, it consists of an obliquely arranged ventilation floor, which may also be cascade-shaped and is flowed through by a classifying air flow.
- the dynamic classifier usually has a rotating rod basket or rotor.
- the conveying paths can be minimized in the circulation circuits.
- the first grinding circuit further comprises a first conveying unit arranged between a coarse material outlet of the static classifier and a feed shaft of the roller press.
- Farther is provided in the second grinding circuit arranged between a discharge opening of the ball mill and a feed opening of the dynamic classifier second delivery unit.
- the dynamic sifter may include a finished product outlet and a semen outlet.
- the grinding system according to the invention is preferably designed so that the grits of the dynamic classifier are merely passed to the ball mill. A return of the grits to the first grinding cycle should only take place in exceptional cases, especially if the amount of grits exceeds the processing capacity of the ball mill.
- a buffer storage is provided between the dynamic classifier and the ball mill, which has an overflow associated with the first grinding circuit. Instead of or in addition to the overflow, it may also be provided that the amount of grime accumulated is adjusted to the capacity of the ball mill by influencing the amount of fines of the static sifter.
- a classifying air stream used in the static classifier such that the amount of the greens produced in the dynamic classifier is adapted to the capacity of the ball mill.
- the delivery volume of the first delivery unit can be dimensioned correspondingly smaller. Due to the reduced delivery volume of the first delivery unit and the reduced delivery of the second delivery unit results in significant investment and operating cost savings. By the renunciation a dynamic classifier above the roll press also results in a relatively compact overall arrangement of the grinding plant.
- 1 is a schematic representation of a grinding plant with a arranged at the level of the roller press dynamic classifier
- FIG. 2 is a schematic representation of a grinding plant with a arranged below the roller press dynamic classifier
- FIG. 3 schematic representation of a dynamic classifier with a buffer memory with overflow
- Fig. 4 schematic representation of a dynamic classifier with a level measuring device in the buffer memory.
- a grinding plant for crushing brittle grinding material such as limestone, clinker, dolomite or ore material is shown. It essentially consists of a first grinding circuit 3 having a roller press 1 and a static classifier 2 and a second grinding circuit 6 having a dynamic classifier 4 and a ball mill 5.
- the roller press has two counter-rotating grinding rollers 1a, 1b in a conventional manner. About a pressing device not shown, the two grinding rollers are applied while maintaining a Mahlspalts with grinding pressures of 50 MPa and more.
- the first grinding circuit 3 further comprises a first conveying unit 7, in particular a bucket elevator, arranged between a coarse material outlet 2b of the static classifier 2 and a feed chute 1c of the roller press 1.
- the roller press is further provided via an outlet opening ld with a feed opening 2a of the static classifier 2 connected.
- the connection between roller press and static sifter is expediently carried out via a chute 8 so that the comminuted material is guided by means of gravity into the static sifter without any expenditure of energy.
- the grinding stock (fresh material 9) to be fed to the first grinding circuit 3 is fed in the area of the chute 8 or the feed opening 2a of the static classifier 2.
- the fresh material 9, which may already contain a certain amount of fines, is thus sighted only in the static classifier in coarse material and fine material, so that only the coarse material is conveyed to the feed chute lc of the roll press 1.
- the static classifier 2 has an obliquely arranged aeration bottom 2d, through which a classifying air stream 10 flows. While the coarse material passes by gravity to the coarse material outlet 2b, the fine material is guided together with the classifying air flow via the fine material outlet 2c into the dynamic classifier 4.
- the dynamic classifier 4 is designed, for example, as a rod basket sifter with a tangentially arranged inlet opening 4a.
- the millbase fed to the dynamic sifter is screened in gruel and finished product, the gruel being sent to the ball mill 5 via a pouring outlet 4b.
- the connection may be formed, for example, by a chute or, in the case of an insufficient gradient, as an airflow channel.
- the finished product is fed together with the classifying air flow via a finished product outlet 4c to a separator 11, where the finished product 12 is separated from the classifying air stream 10.
- the grits are further crushed and then optionally returned to the dynamic classifier 4 via another separator 13 or directly via a second conveyor 14.
- the further separator 13 may be required in particular when the ball mill 5 is operated with an air flow.
- FIG. 2 differs from the first embodiment essentially only in that the dynamic classifier 4 "of the 2nd grinding circuit 6 is arranged below the roller press 1. Die Static The sifter 2 is again arranged below the dynamic sifter 4 " . The inlet opening 4" a of the dynamic sifter 4 is arranged at the lower end of the sifter, so that the sifting air stream 10 together with the fines of the static sifter 2 from bottom to top into the dynamic sifter.
- the further details of this second grinding plant and its mode of action are the same as those of the first grinding plant, and it goes without saying that the sifter 4 "can also be used instead of the sifter 4 and vice versa.
- the two grinding systems are preferably operated in such a way that the greases produced in the dynamic sifter 4 or 4 "are returned to the first grinding cycle only in a small amount, but preferably not at all (return line 15 shown in dashed lines) 4 "is equipped with a semolina cone or buffer 16 ( Figures 3 and 4).
- a metering device 17 for example, a cell sluice or a screw, the ball mill 5, the required amount can be supplied dosed.
- the buffer memory 16 according to FIG. 3 is provided with an overflow 18, which is connected via the return line 15 to the first grinding circuit 3.
- the return line 15 expediently opens in the region of the first conveyor 7.
- the overflow 18 should only be used in exceptional cases, so that the aim is to operate the grinding plant so that no grues are returned via the return line 15 to the first grinding cycle.
- the amount of resulting grits depends primarily on the fines content of the static classifier 2.
- suitable measurements such as a Sirifiussunk in the return line 15 for determining the recirculated Gr manemassenstromes or a measurement of the current consumption of the first conveyor 7 and / or a Einrollengurtwaage after the first conveyor 7 for determining the circulating mass flow of the first grinding circuit, it can be determined whether the Amount of the resulting grits is too big.
- An optionally required influencing of the fines content of the static classifier can essentially be achieved by the adjustment of the amount of the classifying air stream 10 or a regulation of the feed quantity of the fresh material 9 take place.
- FIG. 4 shows yet another variant in which a return line 15 is dispensed with.
- the dynamic sifter is in turn equipped with a buffer memory 16, which has a level measuring device 19. If the level is too low, for example, the amount of fresh product and / or the classifying air stream 10 is increased. If the level is too high, the amount of fresh material and / or the classifying air stream 10 is reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014108334.2A DE102014108334A1 (de) | 2014-06-13 | 2014-06-13 | Mahlanlage und Verfahren zur Zerkleinerung von Mahlgut |
| PCT/EP2015/062674 WO2015189131A1 (de) | 2014-06-13 | 2015-06-08 | Mahlanlage und verfahren zur zerkleinerung von mahlgut |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3154701A1 true EP3154701A1 (de) | 2017-04-19 |
| EP3154701C0 EP3154701C0 (de) | 2024-04-10 |
| EP3154701B1 EP3154701B1 (de) | 2024-04-10 |
Family
ID=53284284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15726988.7A Active EP3154701B1 (de) | 2014-06-13 | 2015-06-08 | Mahlanlage und verfahren zur zerkleinerung von mahlgut |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3154701B1 (de) |
| CN (1) | CN106457259B (de) |
| DE (1) | DE102014108334A1 (de) |
| WO (1) | WO2015189131A1 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016006610A1 (de) * | 2016-06-02 | 2017-12-07 | Khd Humboldt Wedag Gmbh | Schiffskreislaufmahlanlage |
| DE102017115994A1 (de) * | 2017-07-17 | 2019-01-17 | Thyssenkrupp Ag | Zweistufiger Mahlkreislauf und Verfahren zur Herstellung eines gemahlenen Produkts mittels einer zweistufigen Mahlung |
| DE102018105978B3 (de) | 2018-03-15 | 2019-04-25 | Thyssenkrupp Ag | Sichter und Verfahren zum Sichten eines Materialstroms sowie eine Mahlanlage |
| CN109569853B (zh) * | 2019-01-18 | 2021-06-01 | 中材海外工程有限公司 | 一种球磨机和辊压机组成的联合粉磨系统 |
| CN110354946A (zh) * | 2019-08-09 | 2019-10-22 | 诸暨高宗自动化科技有限公司 | 一种水泥生产用多级粉磨装置 |
| DE102020100254A1 (de) | 2020-01-08 | 2021-07-08 | Thyssenkrupp Ag | Integriertes Verfahren zur Herstellung eines Baustoffs aus Phosphorgips |
| DE102020100249A1 (de) | 2020-01-08 | 2021-07-08 | Thyssenkrupp Ag | Integriertes Verfahren zur kommerziellen und industriellen Verwertung von Kalziumsulfat unter Gewinnung von Seltenen Erden aus der Phosphorsäureproduktion |
| DE102020100241A1 (de) | 2020-01-08 | 2021-07-08 | Thyssenkrupp Ag | Verfahren zur Herstellung von Phosphorsäure und Klinkerprozess-geeigneter Kalziumsulfatqualität zur kommerziellen und industriellen Verwertung von Kalziumsulfat |
| DE102020100238A1 (de) | 2020-01-08 | 2021-07-08 | Thyssenkrupp Ag | Integriertes Verfahren zur kommerziellen und industriellen Verwertung von Kalziumsulfat aus der Phosphorsäureproduktion |
| DE102020100260A1 (de) | 2020-01-08 | 2021-07-08 | Thyssenkrupp Ag | Integriertes Verfahren zur Herstellung von Schwefelsäureprozess-geeigneter Schwefeldioxidqualität aus Kalziumsulfat/Phosphorgips aus der Phosphorsäureproduktion |
| DE102020200878A1 (de) * | 2020-01-24 | 2021-07-29 | Thyssenkrupp Ag | Rührwerkskugelmühle, Rührwerkskugelmühlenrührwerk und Verfahren zum Zerkleinern von Mahlgut |
| CN118634946A (zh) * | 2024-05-30 | 2024-09-13 | 中材(天津)粉体技术装备有限公司 | 一种灰质岩石制备高品质砂石骨料的短流程低能耗系统 |
| WO2026027053A1 (en) * | 2024-08-01 | 2026-02-05 | Cemex Innovation Holding Ag | Mineral grinding method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3518543C3 (de) * | 1985-05-23 | 1996-12-19 | Kloeckner Humboldt Deutz Ag | Verfahren und Einrichtung zur Zerkleinerung bzw. Mahlung spröden Mahlgutes |
| DE4303987A1 (de) | 1993-02-11 | 1994-08-18 | Kloeckner Humboldt Deutz Ag | Mahlverfahren und zugehörige Mahlanlage |
| DE4320025A1 (de) * | 1993-06-17 | 1994-12-22 | Krupp Polysius Ag | Mahlanlage und Verfahren zum Mahlen und Sichten von sprödem Mahlgut |
| DE4337215A1 (de) * | 1993-10-30 | 1995-05-04 | Kloeckner Humboldt Deutz Ag | Umlaufmahlanlage |
| DE19922449B4 (de) * | 1999-05-11 | 2010-01-21 | Bartsch, Thomas, Dr.-Ing. | Verfahren zur Durchsatzregelung einer Mahlanlage |
| DE10221739A1 (de) | 2002-05-16 | 2003-12-04 | Kloeckner Humboldt Wedag | Kreislaufmahlanlage mit Mühle und Sichter |
| RU2410159C1 (ru) * | 2009-07-13 | 2011-01-27 | Николай Фёдорович Глухарёв | Способ измельчения неэлектропроводного материала, цемент или добавка, полученные этим способом, а также способ повышения износостойкости мелющих тел и способ повышения показателя текучести продукта с использованием способа измельчения |
| CN101947490B (zh) * | 2010-09-30 | 2014-04-16 | 成都利君实业股份有限公司 | 用于精细化工的高压辊压机辊压粉磨方法 |
| DE102011055762B4 (de) * | 2011-11-28 | 2014-08-28 | Maschinenfabrik Köppern GmbH & Co KG | Vorrichtung zum Sichten von körnigem Gut und Mahlanlage |
| CN103041906A (zh) * | 2013-01-03 | 2013-04-17 | 湖南三泓建材有限公司 | 一种矿渣微粉粉磨系统及工艺 |
-
2014
- 2014-06-13 DE DE102014108334.2A patent/DE102014108334A1/de not_active Ceased
-
2015
- 2015-06-08 CN CN201580031415.8A patent/CN106457259B/zh active Active
- 2015-06-08 WO PCT/EP2015/062674 patent/WO2015189131A1/de not_active Ceased
- 2015-06-08 EP EP15726988.7A patent/EP3154701B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2015189131A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3154701C0 (de) | 2024-04-10 |
| WO2015189131A1 (de) | 2015-12-17 |
| CN106457259B (zh) | 2019-06-18 |
| DE102014108334A1 (de) | 2015-12-17 |
| CN106457259A (zh) | 2017-02-22 |
| EP3154701B1 (de) | 2024-04-10 |
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